Objectives:Aerobic exercise training can increase skeletal muscle mitochondrial content.Supine exercise training with legs above the heart potentially augments these increases.However,the impact of supine exercise tra...Objectives:Aerobic exercise training can increase skeletal muscle mitochondrial content.Supine exercise training with legs above the heart potentially augments these increases.However,the impact of supine exercise training on mitochondrial biogenesis and cardiovascular adaptations remains unclear.Methods:In this single-centred,randomized,parallel arm trial,19 recreationally active individuals underwent seven sessions of either supine with legs up(SUP;n=9,6 females)or upright with legs down(UP;n=10,7 females)aerobic training on a recumbent bike at 71±7%and 71±2%of peak work rate(WRpeak),respectively.The study aimed to test the effects of training with decreased muscle oxygenation on indices of muscle mitochondrial remodelling.Secondary outcomes included exercise performance,muscle oxygenation,and cardiovascular responses.Results:Secondary outcomes revealed significant interaction effects for time to fatigue(TTF)and WRpeak in the SUP group during supine testing,suggesting enhanced exercise tolerance and performance.No between group interaction effects were observed for upright testing.No clear effects on mitochondrial biogenesis were observed based on expression of mitochondrial protein subunits and transcriptional regulators.Acutely,HRpeak was lower during the SUP Test compared to the UP Test.No central cardiovascular adaptations were observed following training.Conclusions:Our exploratory analyses showed that supine aerobic training more effectively improves supine exercise tolerance and performance compared with upright training,despite no differences in measured proteins related to mitochondrial biogenesis.Further research is needed to elucidate the mechanisms underlying these postural-specific training effects.Registration:clinicaltrials.gov:NCT04151095.展开更多
A simple procedure to plan, verify and implement craniospinal irradiation（CSI） with patients supine is presented. Treatment is conducted with a single posterior spinal field abutting two lateral cranial fields. The ...A simple procedure to plan, verify and implement craniospinal irradiation（CSI） with patients supine is presented. Treatment is conducted with a single posterior spinal field abutting two lateral cranial fields. The opposed lateral fields are half-blocked and the inferior line is perpendicular. The posterior field uses some fixed field parameters so that the cephalad edge of the posterior field is coplanar with the caudal edges of the lateral fields and it is independent of the height of the couch. A steel-shot ball is used to measure the size of overlap or gap at the junction using portal images of an electron portal image device or portal films. The results of analyzing the portal images show that the errors of the junction are within ± 1 mm. The dose-volume histograms （DVHs）show that there are not unbearable hot or cold spots in the clinic target volumes （CTVs）. Supine craniospinal treatment is a reliable and convenient alternative to treatment in the prone position and avoids the technical difficulties of the latter. The use of fixed field geometry greatly facilitates treatment planning and effectively reduces the amount of time of setup, verification and treatment.展开更多
Background:The supine position is the most common birth position adopted in China,but the World Health Organization recommends non-supine positions for delivery.The handsand-knees position shows several advantages,suc...Background:The supine position is the most common birth position adopted in China,but the World Health Organization recommends non-supine positions for delivery.The handsand-knees position shows several advantages,such as wide pelvic diameter and easy fetal rotation during delivery.Small trials conducted in China in 2011 revealed that the handsand-knees position resulted in improved maternal and neonate outcomes than those in the supine position.However,a comprehensive study must be conducted before the handsand-knees position can be introduced into clinical practice.Hence,we conducted this multicenter trial to comprehensively examine the benefits of the hands-and-knees position over the supine position during delivery.Methods:Our clinical study was conducted in 11 hospitals in China from May to December 2012.A total of 446 pregnant women who gave birth in the hands-and-knees position were assigned into the experimental group,and 440 women who gave birth in the supine position were classified into the control group.Episiotomy rate was evaluated as the primary outcome,and perineum laceration degree was considered the secondary outcome.Results:Women in the experimental group achieved lower rates of episiotomy and higher rates of intact perineum and first-degree perineum lacerations compared with those in the control.Postpartum bleeding amount,neonatal asphyxia,and APGAR scores at 1 and 5 min were not significantly different between the two groups.Conclusions:This study proves that women who delivered in the hands-and-knees position achieved low rates of episiotomy and intact perineum.Moreover,the rates of neonatal asphyxia and postpartum bleeding did not increase.Pregnant patients who prefer to adopt the hands-and-knees position should be assisted in assuming such position during delivery.展开更多
Objective The purpose of the study was to evaluate the efficiency of the supine roll test(SRT)and alternative positional tests(APTs)including the bow and lean test(BLT),pseudo-spontaneous nystagmus(PSN),and lying down...Objective The purpose of the study was to evaluate the efficiency of the supine roll test(SRT)and alternative positional tests(APTs)including the bow and lean test(BLT),pseudo-spontaneous nystagmus(PSN),and lying down nystagmus(LDN)to identify the affected side in horizontal canal benign paroxysmal positional vertigo(HC-BPPV).Methods In our prospective study,we performed a testing profile(PSN,BLT,LDN,SRT)on 59 HC-BPPV patients using videonystagmography.We compared the accuracy and sensitivity of these tests in HC-BPPV lateralization.Data from 30 healthy patients were collected as the control group.Results When performing positional tests,the elicited nystagmus coinciding with Ewald’s second law was defined as a“positive response”.In 44 patients with geotropic nystagmus,the rates of positive response in LDN,PSN,and BLT were 22/44(50%),19/44(43%),and 18/44(41%),respectively,while in 15 patients with apogeotropic nystagmus,the positive response rates of these three tests were 10/15(66.7%),9/15(60%),and 4/15(27.00%),respectively.The sensitivity of LDN(54.38%)was higher than that of PSN(47.37%)and BLT(38.60%)but lower than that of SRT(89.47%).Notably,the accuracy rate of PSN(71.8%)was higher than that of the other APTs.In 6 patients with symmetrical nysgtamus during the roll test,5 patients showed a positive response in both LDN and BLT(83.34%),whereas 4 patients showed a positive response in PSN(66.67%).Conclusion All positional tests are helpful for determining the affected side of HC-BPPV,but SRT carries the highest accuracy of lateralization followed by PSN.展开更多
AIM:To analyze the therapeutic effect of combined abinterno trabeculectomy and cataract surgery on intraocular pressure(IOP)levels in supine and sitting postures during a 24-hour IOP profile.METHODS:Twenty-six eyes of...AIM:To analyze the therapeutic effect of combined abinterno trabeculectomy and cataract surgery on intraocular pressure(IOP)levels in supine and sitting postures during a 24-hour IOP profile.METHODS:Twenty-six eyes of twenty-six patients receiving ab-interno trabeculectomy using electroablation of the trabecular meshwork combined with cataract surgery or stand-alone were included in this retrospective analysis.IOP change during 24-hour IOP profiles within two years postoperatively were analyzed for eyes receiving surgery(“study eyes”)and compared to fellow eyes,which had not received surgery.Clinical data including mean sitting IOP(siIOP),mean supine IOP(su IOP)and the number of topical antiglaucomatous medications(TAM)were extracted from patients’files.RESULTS:Preoperatively,si IOP was 17.6±5.3 mm Hg in study and 17.1±4.7 mm Hg in fellow eyes(P=0.347).Patients were treated with an average of 2.8±1.0 TAM.Best corrected visual acuity(BCVA)was significantly worse in study eyes(P<0.001),visual field function was marginally not significantly dif ferent(P=0.057).Af ter surger y 9.6±6.8 mo,study eyes had a mean si IOP of 14.5±3.6 mm Hg(IOP reduction:-3.2 mm Hg,P=0.009),a mean su IOP of 18.0±3.5 mm Hg,and an average of 1.3±1.34 TAM(P<0.001),while in fellow eyes,mean si IOP was 16.2±3.4 mm Hg and mean su IOP was 20.5±5.1 mm Hg.Postoperatively,the relative IOP increase between sitting and supine postures was approximately 30%in both study and fellow eyes(P=0.99).CONCLUSION:IOP after ab-interno trabeculectomy shows a comparable relative reduction in both supine and sitting position.Classical trabeculectomy is known to lower su IOP overproportionally.展开更多
Background: Anesthetists should measure the concentration of supplemental oxygen to determine whether patients’ partial pressure of arterial oxygen (PaO2) is correct during general anesthesia. However, the standard P...Background: Anesthetists should measure the concentration of supplemental oxygen to determine whether patients’ partial pressure of arterial oxygen (PaO2) is correct during general anesthesia. However, the standard PaO2 value in obese patients in the supine position is unknown. We evaluated the PaO2 with respect to the Broca-Katsura obesity index. Materials and Methods: From January 2001 to December 2013, we evaluated 472 patients aged ≥16 years old that underwent general anesthesia in the supine position. The anesthetic charts of 472 patients with an American Society of Anesthesiologists physical status of I or II were retrospectively reviewed to investigate the PaO2. Results: In patients aged 16 to 2 was 165.7 ± 25.6 mmHg at a Broca-Katsura index of 2 was 152.1 ± 23.8 mmHg at a Broca-Katsura index of 2 tended to decrease with age from 16 to 2 tended to decrease with age from 16 to <65 years at a Broca-Katsura index of 20% to <40%.展开更多
Background: The concentration of supplemental O2 should be measured during general anesthesia to determine whether patients’ pressure of arterial oxygen (PaO2) is correct. Nevertheless, we do not know standard value ...Background: The concentration of supplemental O2 should be measured during general anesthesia to determine whether patients’ pressure of arterial oxygen (PaO2) is correct. Nevertheless, we do not know standard value of PaO2 by age in supine position during general anesthesia. In this study, we evaluated the PaO2 by age at 33% or 40% O2 concentration. Materials and Methods: We retrospectively reviewed the anesthetic charts of 660 patients who were received general anesthesia from January 2001 to December 2013. Patients were divided into two groups by concentration of fraction of inspiratory oxygen: group at 33% or 40%. Second, patients aged 16 - 85 years were classified into 7 groups by age with each group covering one decade. Results: The PaO2 was 185.1 ± 19.2 mmHg (33%) and 209.8 ± 19.8 mmHg (40%) at age 16 - 25 years, 178.7 ± 23.6 mmHg (33%) and 202.7 ± 26.0 mmHg (40%) at age 26 - 35 years, 165.8 ± 30.6 mmHg (33%) and 188.9 ± 22.2 (40%) mmHg at age 36 - 45 years, 154.1 ± 22.8 mmHg (33%) and 181.8 ± 19.2 (40%) mmHg at age 46 - 55 years, 153.7 ± 21.7 mmHg (33%) and 177.5 ± 18.1 mmHg (40%) at age 56 - 65 years, 152.2 ± 24.5 mmHg and 171.0 ± 22.1 mmHg at age 66 - 75 years, and 154.6 ± 24.3 mmHg and 174.1 ± 20.2 mmHg at age 76 - 85 years. Conclusion: The PaO2 tended to decrease with age at both 33% and 40% O2 concentration.展开更多
Objective The aim of the study was to compare the dose to lung volume in the supine and prone posi- tion while designing CyberKnife treatment plans to treat metastatic tumors in the spinous processes of the thoracic v...Objective The aim of the study was to compare the dose to lung volume in the supine and prone posi- tion while designing CyberKnife treatment plans to treat metastatic tumors in the spinous processes of the thoracic vertebrae, and offer a reference for reducing damage to normal tissues. Methods Nine cases of metastatic tumors in the spinous processes of the thoracic vertebrae were selected, and then we designed treatment plans based on the supine and prone positions and compared the results. Results In contrast with the treatment plan based on the prone position, the one for the supine position required 14862-36337 MU more; the lung D5% was 5.20-7.90 Gy higher; and the lung D20% was 2.61-5.73 Gy higher. The difference of dose to spine volume between the two plans was -2.21-2.67 Gy; to the skin volume was -3.93-7.85 Gy; and to the esophagus was 0.28-6.39 Gy. Conclusion The treatment plan based on the prone position of patients can better protect lung tissues than the one based on the supine position, and can also improve the avaUabilitv of beams.展开更多
AIM:To identify a hypothesis on:Supine sleep,sudden infant death syndrome(SIDS) reduction and association with increasing autism incidence.METHODS:Literature was searched for autism spectrum disorder incidence time tr...AIM:To identify a hypothesis on:Supine sleep,sudden infant death syndrome(SIDS) reduction and association with increasing autism incidence.METHODS:Literature was searched for autism spectrum disorder incidence time trends,with correlation of change-points matching supine sleep campaigns.A mechanistic model expanding the hypothesis was constructed based on further review of epidemiological and other literature on autism.RESULTS:In five countries(Denmark,United Kingdom,Australia,Israel,United States) with published time trends of autism,change-points coinciding with supine sleep campaigns were identified.The model proposes that supine sleep does not directly cause autism,but increases the likelihood of expression of a subset of autistic criteria in individuals with genetic susceptibility,thereby specifically increasing the incidence of autism without intellectual disability.CONCLUSION:Supine sleep is likely a physiological stressor,that does reduce SIDS,but at the cost of impact on emotional and social development in the population,a portion of which will be susceptible to,and consequently express autism.A re-evaluation of all benefits and harms of supine sleep is warranted.If the SIDS mechanism proposed and autism model presented can be verified,the research agenda may be better directed,in order to further decrease SIDS,and reduce autism incidence.展开更多
Background: We investigated the differences between partial pressure of arterial carbon dioxide and end-tidal carbon dioxide (P(a-ET)CO2) with respect to the Broca-Katsura index (BKI), which is an obesity index, in ob...Background: We investigated the differences between partial pressure of arterial carbon dioxide and end-tidal carbon dioxide (P(a-ET)CO2) with respect to the Broca-Katsura index (BKI), which is an obesity index, in obese patients during general anesthesia. Materials and Methods: From January 2003 to December 2013, we studied 601 patients aged 16 years old or over undergoing general anesthesia. Patients had American Society of Anesthesiology physical status I and II and we reviewed their anesthetic charts. The P(a-ET)CO2 with respect to the BKI divided patients into two groups: 16 to 2 values between the two groups. Results: In patients aged 16 to 2 was 2.2 ± 3.1 mmHg at BKI 2 was 3.2 ± 4.1 mmHg at BKI 2 tends to increase in obese patients during general anesthesia with increasing BKI in patients aged 16 to < 65 years old.展开更多
Objective: to analyze the role of nursing intervention in the prevention of supine hypotension syndrome by caesarean section, to sort out the research data reports, and to provide a theoretical basis for the related w...Objective: to analyze the role of nursing intervention in the prevention of supine hypotension syndrome by caesarean section, to sort out the research data reports, and to provide a theoretical basis for the related work. Method: from July 2019 to July 2021 in our hospital to complete maternal delivery of 106 cases, according to the admission order to two groups, into the control group of 53 cases, carry out routine care, into observation group 53 cases, prevent supine hypotension syndrome nursing intervention, evaluation of maternal psychological status, statistics of hypotension syndrome, and investigate satisfaction. Result: (1) Mental state score. The SAS and SDS scores decreased in both groups compared to before the intervention, SAS (47.88 ± 5.69) points and SDS (53.51 ± 1.92) points were significantly lower than SAS (54.23 ± 6.41) points and SDS (57.43 ± 7.25) points. There is a significant statistical value difference (P <0.05);(2) The incidence of hypotension syndrome between groups, the observation group of 1.89% was significantly lower than the 98.11% in the control group, there is a significant statistical value difference (P <0.05);(3) Compared with the two groups of satisfaction, the observation group 98.11% was significantly higher than the control group 79.25%, There is a significant statistical value difference (P <0.05). Conclusion: in the cesarean delivery, the nursing intervention of supine hypotension syndrome is helpful to maintain peace of mind, reduce the risk of hypotension syndrome and improve nursing satisfaction.展开更多
Objective: to explore the application effect of human assisted air cushion in sacral tail pressure ulcer nursing. Methods: with the help of computer virtual simulation technology, the sacral tail auxiliary air cushion...Objective: to explore the application effect of human assisted air cushion in sacral tail pressure ulcer nursing. Methods: with the help of computer virtual simulation technology, the sacral tail auxiliary air cushion was designed, and the stress level of the pressure ulcer was calculated. A total of 110 patients with pressure ulcers admitted to our hospital were selected as the research subjects, 55 of them. Patients in the experimental group used the above methods for nursing treatment, while patients in the control group used the routine nursing mode to compare and analyze the nursing situation of the two groups, and record relevant data. Results: experimental group patients waist and thigh use the auxiliary air cushion, can greatly reduce the sacral tail pressure ulcer progress, patient comfort greatly improved, pressure ulcer problem effectively improved, the control group patients also improved, but all aspects improved than the experimental group patients ideal. Conclusion: pressure analysis of supine sacrotail pressure ulcer and strengthening decompression care can better help patients recover to health, which is worth further promotion and application in clinical practice, and further strengthen the attention of related nursing mode.展开更多
Objective To discuss semilateral supine position for retroperitoneoscopic adrenalectomy. Methods From Jan. 2006 to Dec. 2008,36 patients ( 20 males and 16 females with mean age of 43 years) underwent retroperito-neosc...Objective To discuss semilateral supine position for retroperitoneoscopic adrenalectomy. Methods From Jan. 2006 to Dec. 2008,36 patients ( 20 males and 16 females with mean age of 43 years) underwent retroperito-neoscopic adrenalectomy in 60° - 70°semilateral展开更多
This case study demonstrates a single-position supine approach for robotic retroperitoneal lymph node dissection(R-RPLDN)for the treatment of nonseminomatous germ cell tumors and residual masses after chemotherapy.We ...This case study demonstrates a single-position supine approach for robotic retroperitoneal lymph node dissection(R-RPLDN)for the treatment of nonseminomatous germ cell tumors and residual masses after chemotherapy.We performed a bilateral R-RPLDN in a 33-year-old man with nonseminomatous germ cell tumors and residual postchemotherapy masses.For this approach,the patient was placed in a steep Trendelenburg position,and a 5-port transperitoneal technique was used,with the robot docked so that the arms were oriented cephalad.This approach allowed simultaneous access to both sides of the retroperitoneum,thereby eliminating the need for bilateral lymphadenectomy and patient repositioning.Bilateral R-RPLDN was performed using a single-position supine approach.This versatile approach offers a less invasive,more efficient,and safer solution for removing residual postchemotherapy testicular cancer masses.展开更多
Objectives:To compare operative times,safety,and effectiveness of percutaneous nephrolithotomy in the supine versus prone position.Materials and methods:An observational study of 100 patients was conducted in our inst...Objectives:To compare operative times,safety,and effectiveness of percutaneous nephrolithotomy in the supine versus prone position.Materials and methods:An observational study of 100 patients was conducted in our institution for 2years from 2018 to 2020 divided into 2 groups:50 patients underwent modified supine percutaneous nephrolithotomy(PCNL)and 50 patients underwent standard prone PCNL.The inclusion criteria included a renal calculus(calyx or pelvis)of any size for which PCNL was indicated and exclusion criteria were patients having contraindications for PCNL such as bleeding disorders,pregnancy,high risk,and co-morbid conditions.The measured data included operative time,number of punctures,stone-free rate,length of hospital stays,and rate of complications.Results:The 2 groups were comparable in mean age,male to female ratio,calculus size,number of punctures,residual calculi,and postoperative fever and pain.The mean difference of hemoglobin in the supine PCNL group was 0.37 g/dL whereas in the prone PCNL group it was 0.61 g/dL.The p value was significant at 0.043.The mean time to finish from initial postion was 72.24 minutes in supine PCNL and 88.12 minutes in prone PCNL.The p value was significant(p<0.001).The mean time before puncture was 20.92 minutes in the supine position and 31.84 minutes in the prone position.The p value was significant(p<0.001).The mean time from puncture to finish was 51.32 minutes in the supine position and 56.28 minutes in the prone position.The p value was significant(p<0.001).Conclusions:As observed from this study,supine PCNL is associated with a significantly reduced operating time when compared to conventional prone position PCNL procedures.The postoperative complications such as pain and fever were not significantly different.Hence,the supine PCNL is an equally effective modality for treatment of a renal calculus with benefits of simultaneous retrograde access and less operative time compared to the prone PCNL.展开更多
The direct anterior approach to the hip has been suggested to have several advantages compared to previously popular approaches through its use of an intra-muscular and intra-nervous interval betweenthe tensor fasciae...The direct anterior approach to the hip has been suggested to have several advantages compared to previously popular approaches through its use of an intra-muscular and intra-nervous interval betweenthe tensor fasciae latae and sartorius muscles. Recent increased interest in tissue-sparing and minimallyinvasive arthroplasty has given rise to a sharp increase in the utilization of direct anterior total hip arthroplasty. A number of variations of the procedure have been described and several authors have published their experiences and feedback to successfully accomplishing this procedure. Additionally, improved understanding of relevant soft tissue constraints and anatomic variants has provided improved margin of safety for patients. The procedure may be performed using speciallydesigned instruments and a fracture table, however many authors have also described equally efficacious performance using a regular table and standard arthroplasty tools. The capacity to utilize fluoroscopy intraoperatively for component positioning is a valuable asset to the approach and can be of particular benefit for surgeons gaining familiarity. Proper management of patient and limb positioning are vital to reducing risk of intra-operative complications. An understanding of its limitations and challenges are also critical to safe employment. This review summarizes the key features of the direct anterior approach for total hip arthroplasty as an aid to improving the understanding of this important and effective method for modern hip replacement surgeons.展开更多
Acute compartment syndrome(ACS) of the thigh following primary total hip arthroplasty(THA) is a highly uncommon complication and has not yet been reported before with regards to the anterior approach through the anter...Acute compartment syndrome(ACS) of the thigh following primary total hip arthroplasty(THA) is a highly uncommon complication and has not yet been reported before with regards to the anterior approach through the anterior supine interval. We present a case of a 69-year-old male patient with a history of stroke, who developed ACS of the thigh after elective THA while using therapeutic low molecular weight heparin as bridging for regular oral anticoagulation. ACS pathogenesis, diagnostic tools, treatment and relevant literature are discussed. The patient's ACS was recognized in time and treated by operative decompression with fasciotomy of the anterior compartment. Follow-up did not show any neurological deficit or soft-tissue damage.展开更多
BACKGROUND Acute respiratory distress syndrome(ARDS)is an acute,diffuse,inflammatory lung injury.Previous studies have shown prone position ventilation(PPV)to be associated with improvement in oxygenation.However,its ...BACKGROUND Acute respiratory distress syndrome(ARDS)is an acute,diffuse,inflammatory lung injury.Previous studies have shown prone position ventilation(PPV)to be associated with improvement in oxygenation.However,its role in patients with ARDS caused by sepsis remains unknown.AIM To analyze the clinical effects of PPV in patients with ARDS caused by sepsis.METHODS One hundred and two patients with ARDS were identified and divided into a control group(n=55)and a PPV treatment group(n=47).Outcomes included oxygenation index,lung compliance(Cst)and platform pressure(Pplat),which were compared between the two groups after ventilation.Other outcomes included heart rate(HR),mean arterial pressure(MAP),central venous pressure(CVP),left ventricular ejection fraction(LVEF),the length of mechanical ventilation time and intensive care unit(ICU)stay,and levels of C-reactive protein(CRP),procalcitonin(PCT),and interleukin-6(IL-6)after ventilation.Finally,mortality rate was also compared between the two groups.RESULTS On the first day after ventilation,the oxygenation index and Cst were higher and Pplat level was lower in the PPV group than in the conventional treatment group(P<0.05).There were no significant differences in oxygenation index,Cst,and Pplat levels between the two groups on the 2^(nd),4^(th),and 7^(th) day after ventilation(P>0.05).There were no significant differences in HR,MAP,CVP,LVEF,duration of mechanical ventilation and ICU stay,and the levels of CRP,PCT,and IL-6 between the two groups on the first day after ventilation(all P>0.05).The mortality rates on days 28 and 90 in the PPV and control groups were 12.77% and 29.09%,and 25.53% and 45.45%,respectively(P<0.05).CONCLUSION PPV may improve respiratory mechanics indices and may also have mortality benefit in patients with ARDS caused by sepsis.Finally,PPV was not shown to cause any adverse effects on hemodynamics and inflammation indices.展开更多
AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 pat...AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.· RESULTS： Two hundred and twenty-three eyes（56.5%） in sitting position and 343 eyes（86.8%） in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups（P 〉0.05）. A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups（P 〈0.01）. Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles（P 〈0.05） were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia（sitting position： r =-0.109; supine position： r =-0.172; P 〈0.05）.·CONCLUSION： There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed.展开更多
AIM:To compare the posture-induced variations in intraocular pressure(IOP)between the primary open angle glaucoma(POAG)and non-glaucomatous eyes.METHODS:A case-controlled age matched study was conducted in 55 successi...AIM:To compare the posture-induced variations in intraocular pressure(IOP)between the primary open angle glaucoma(POAG)and non-glaucomatous eyes.METHODS:A case-controlled age matched study was conducted in 55 successive newly diagnosed POAG and 56 non-glaucomatous patients seen in glaucoma clinic and general outpatient eye clinic in the Alex Ekwueme University Teaching Hospital,Abakaliki.The IOPs of eligible correspondents were measured with Perkin’s hand-held tonometer in the sitting,supine flat and supine with pillow positions respectively.Measurement of IOP in each position was done after 15 min of assuming such posture.RESULTS:The IOP difference between the sitting and supine flat position was significantly higher in the POAG than non-glaucoma subjects(7.68±2.08 vs 4.03±0.13 mm Hg,P<0.001).The IOP difference between the sitting and supine with pillow positions was 2.61±1.49 mm Hg for POAG and 1.44±0.70 mm Hg in non-glaucoma(P<0.001),while difference between supine flat and supine with pillow positions was 5.07±2.24 mm Hg in POAG and 2.59±0.66 mm Hg in non-glaucomatous patients(P<0.001).CONCLUSION:Greater variations in posture induced IOP occurred in POAG patients than non-glaucomatous.The posture induced IOP variation is lowest in the sitting position and highest in the supine flat position.Evaluation of posture induced IOP changes may be an important tool in the management of glaucoma.展开更多
基金supported by funding provided to BJG from the Natural Sciences and Engineering Research Council of Canada(NSERCgrant no.402635).
文摘Objectives:Aerobic exercise training can increase skeletal muscle mitochondrial content.Supine exercise training with legs above the heart potentially augments these increases.However,the impact of supine exercise training on mitochondrial biogenesis and cardiovascular adaptations remains unclear.Methods:In this single-centred,randomized,parallel arm trial,19 recreationally active individuals underwent seven sessions of either supine with legs up(SUP;n=9,6 females)or upright with legs down(UP;n=10,7 females)aerobic training on a recumbent bike at 71±7%and 71±2%of peak work rate(WRpeak),respectively.The study aimed to test the effects of training with decreased muscle oxygenation on indices of muscle mitochondrial remodelling.Secondary outcomes included exercise performance,muscle oxygenation,and cardiovascular responses.Results:Secondary outcomes revealed significant interaction effects for time to fatigue(TTF)and WRpeak in the SUP group during supine testing,suggesting enhanced exercise tolerance and performance.No between group interaction effects were observed for upright testing.No clear effects on mitochondrial biogenesis were observed based on expression of mitochondrial protein subunits and transcriptional regulators.Acutely,HRpeak was lower during the SUP Test compared to the UP Test.No central cardiovascular adaptations were observed following training.Conclusions:Our exploratory analyses showed that supine aerobic training more effectively improves supine exercise tolerance and performance compared with upright training,despite no differences in measured proteins related to mitochondrial biogenesis.Further research is needed to elucidate the mechanisms underlying these postural-specific training effects.Registration:clinicaltrials.gov:NCT04151095.
文摘A simple procedure to plan, verify and implement craniospinal irradiation（CSI） with patients supine is presented. Treatment is conducted with a single posterior spinal field abutting two lateral cranial fields. The opposed lateral fields are half-blocked and the inferior line is perpendicular. The posterior field uses some fixed field parameters so that the cephalad edge of the posterior field is coplanar with the caudal edges of the lateral fields and it is independent of the height of the couch. A steel-shot ball is used to measure the size of overlap or gap at the junction using portal images of an electron portal image device or portal films. The results of analyzing the portal images show that the errors of the junction are within ± 1 mm. The dose-volume histograms （DVHs）show that there are not unbearable hot or cold spots in the clinic target volumes （CTVs）. Supine craniospinal treatment is a reliable and convenient alternative to treatment in the prone position and avoids the technical difficulties of the latter. The use of fixed field geometry greatly facilitates treatment planning and effectively reduces the amount of time of setup, verification and treatment.
文摘Background:The supine position is the most common birth position adopted in China,but the World Health Organization recommends non-supine positions for delivery.The handsand-knees position shows several advantages,such as wide pelvic diameter and easy fetal rotation during delivery.Small trials conducted in China in 2011 revealed that the handsand-knees position resulted in improved maternal and neonate outcomes than those in the supine position.However,a comprehensive study must be conducted before the handsand-knees position can be introduced into clinical practice.Hence,we conducted this multicenter trial to comprehensively examine the benefits of the hands-and-knees position over the supine position during delivery.Methods:Our clinical study was conducted in 11 hospitals in China from May to December 2012.A total of 446 pregnant women who gave birth in the hands-and-knees position were assigned into the experimental group,and 440 women who gave birth in the supine position were classified into the control group.Episiotomy rate was evaluated as the primary outcome,and perineum laceration degree was considered the secondary outcome.Results:Women in the experimental group achieved lower rates of episiotomy and higher rates of intact perineum and first-degree perineum lacerations compared with those in the control.Postpartum bleeding amount,neonatal asphyxia,and APGAR scores at 1 and 5 min were not significantly different between the two groups.Conclusions:This study proves that women who delivered in the hands-and-knees position achieved low rates of episiotomy and intact perineum.Moreover,the rates of neonatal asphyxia and postpartum bleeding did not increase.Pregnant patients who prefer to adopt the hands-and-knees position should be assisted in assuming such position during delivery.
基金the National Natural Science Foundation of China(No.81500794,No.81271078 and No.81500791)Scientific Research Project of Hubei Province Health and Family Planning(No.WJ2015MB062).
文摘Objective The purpose of the study was to evaluate the efficiency of the supine roll test(SRT)and alternative positional tests(APTs)including the bow and lean test(BLT),pseudo-spontaneous nystagmus(PSN),and lying down nystagmus(LDN)to identify the affected side in horizontal canal benign paroxysmal positional vertigo(HC-BPPV).Methods In our prospective study,we performed a testing profile(PSN,BLT,LDN,SRT)on 59 HC-BPPV patients using videonystagmography.We compared the accuracy and sensitivity of these tests in HC-BPPV lateralization.Data from 30 healthy patients were collected as the control group.Results When performing positional tests,the elicited nystagmus coinciding with Ewald’s second law was defined as a“positive response”.In 44 patients with geotropic nystagmus,the rates of positive response in LDN,PSN,and BLT were 22/44(50%),19/44(43%),and 18/44(41%),respectively,while in 15 patients with apogeotropic nystagmus,the positive response rates of these three tests were 10/15(66.7%),9/15(60%),and 4/15(27.00%),respectively.The sensitivity of LDN(54.38%)was higher than that of PSN(47.37%)and BLT(38.60%)but lower than that of SRT(89.47%).Notably,the accuracy rate of PSN(71.8%)was higher than that of the other APTs.In 6 patients with symmetrical nysgtamus during the roll test,5 patients showed a positive response in both LDN and BLT(83.34%),whereas 4 patients showed a positive response in PSN(66.67%).Conclusion All positional tests are helpful for determining the affected side of HC-BPPV,but SRT carries the highest accuracy of lateralization followed by PSN.
文摘AIM:To analyze the therapeutic effect of combined abinterno trabeculectomy and cataract surgery on intraocular pressure(IOP)levels in supine and sitting postures during a 24-hour IOP profile.METHODS:Twenty-six eyes of twenty-six patients receiving ab-interno trabeculectomy using electroablation of the trabecular meshwork combined with cataract surgery or stand-alone were included in this retrospective analysis.IOP change during 24-hour IOP profiles within two years postoperatively were analyzed for eyes receiving surgery(“study eyes”)and compared to fellow eyes,which had not received surgery.Clinical data including mean sitting IOP(siIOP),mean supine IOP(su IOP)and the number of topical antiglaucomatous medications(TAM)were extracted from patients’files.RESULTS:Preoperatively,si IOP was 17.6±5.3 mm Hg in study and 17.1±4.7 mm Hg in fellow eyes(P=0.347).Patients were treated with an average of 2.8±1.0 TAM.Best corrected visual acuity(BCVA)was significantly worse in study eyes(P<0.001),visual field function was marginally not significantly dif ferent(P=0.057).Af ter surger y 9.6±6.8 mo,study eyes had a mean si IOP of 14.5±3.6 mm Hg(IOP reduction:-3.2 mm Hg,P=0.009),a mean su IOP of 18.0±3.5 mm Hg,and an average of 1.3±1.34 TAM(P<0.001),while in fellow eyes,mean si IOP was 16.2±3.4 mm Hg and mean su IOP was 20.5±5.1 mm Hg.Postoperatively,the relative IOP increase between sitting and supine postures was approximately 30%in both study and fellow eyes(P=0.99).CONCLUSION:IOP after ab-interno trabeculectomy shows a comparable relative reduction in both supine and sitting position.Classical trabeculectomy is known to lower su IOP overproportionally.
文摘Background: Anesthetists should measure the concentration of supplemental oxygen to determine whether patients’ partial pressure of arterial oxygen (PaO2) is correct during general anesthesia. However, the standard PaO2 value in obese patients in the supine position is unknown. We evaluated the PaO2 with respect to the Broca-Katsura obesity index. Materials and Methods: From January 2001 to December 2013, we evaluated 472 patients aged ≥16 years old that underwent general anesthesia in the supine position. The anesthetic charts of 472 patients with an American Society of Anesthesiologists physical status of I or II were retrospectively reviewed to investigate the PaO2. Results: In patients aged 16 to 2 was 165.7 ± 25.6 mmHg at a Broca-Katsura index of 2 was 152.1 ± 23.8 mmHg at a Broca-Katsura index of 2 tended to decrease with age from 16 to 2 tended to decrease with age from 16 to <65 years at a Broca-Katsura index of 20% to <40%.
文摘Background: The concentration of supplemental O2 should be measured during general anesthesia to determine whether patients’ pressure of arterial oxygen (PaO2) is correct. Nevertheless, we do not know standard value of PaO2 by age in supine position during general anesthesia. In this study, we evaluated the PaO2 by age at 33% or 40% O2 concentration. Materials and Methods: We retrospectively reviewed the anesthetic charts of 660 patients who were received general anesthesia from January 2001 to December 2013. Patients were divided into two groups by concentration of fraction of inspiratory oxygen: group at 33% or 40%. Second, patients aged 16 - 85 years were classified into 7 groups by age with each group covering one decade. Results: The PaO2 was 185.1 ± 19.2 mmHg (33%) and 209.8 ± 19.8 mmHg (40%) at age 16 - 25 years, 178.7 ± 23.6 mmHg (33%) and 202.7 ± 26.0 mmHg (40%) at age 26 - 35 years, 165.8 ± 30.6 mmHg (33%) and 188.9 ± 22.2 (40%) mmHg at age 36 - 45 years, 154.1 ± 22.8 mmHg (33%) and 181.8 ± 19.2 (40%) mmHg at age 46 - 55 years, 153.7 ± 21.7 mmHg (33%) and 177.5 ± 18.1 mmHg (40%) at age 56 - 65 years, 152.2 ± 24.5 mmHg and 171.0 ± 22.1 mmHg at age 66 - 75 years, and 154.6 ± 24.3 mmHg and 174.1 ± 20.2 mmHg at age 76 - 85 years. Conclusion: The PaO2 tended to decrease with age at both 33% and 40% O2 concentration.
基金Supported by a grant of 2013 the General Logistics Department Military Logistic Research Project Key Programs(No.BWS13J031)
文摘Objective The aim of the study was to compare the dose to lung volume in the supine and prone posi- tion while designing CyberKnife treatment plans to treat metastatic tumors in the spinous processes of the thoracic vertebrae, and offer a reference for reducing damage to normal tissues. Methods Nine cases of metastatic tumors in the spinous processes of the thoracic vertebrae were selected, and then we designed treatment plans based on the supine and prone positions and compared the results. Results In contrast with the treatment plan based on the prone position, the one for the supine position required 14862-36337 MU more; the lung D5% was 5.20-7.90 Gy higher; and the lung D20% was 2.61-5.73 Gy higher. The difference of dose to spine volume between the two plans was -2.21-2.67 Gy; to the skin volume was -3.93-7.85 Gy; and to the esophagus was 0.28-6.39 Gy. Conclusion The treatment plan based on the prone position of patients can better protect lung tissues than the one based on the supine position, and can also improve the avaUabilitv of beams.
文摘AIM:To identify a hypothesis on:Supine sleep,sudden infant death syndrome(SIDS) reduction and association with increasing autism incidence.METHODS:Literature was searched for autism spectrum disorder incidence time trends,with correlation of change-points matching supine sleep campaigns.A mechanistic model expanding the hypothesis was constructed based on further review of epidemiological and other literature on autism.RESULTS:In five countries(Denmark,United Kingdom,Australia,Israel,United States) with published time trends of autism,change-points coinciding with supine sleep campaigns were identified.The model proposes that supine sleep does not directly cause autism,but increases the likelihood of expression of a subset of autistic criteria in individuals with genetic susceptibility,thereby specifically increasing the incidence of autism without intellectual disability.CONCLUSION:Supine sleep is likely a physiological stressor,that does reduce SIDS,but at the cost of impact on emotional and social development in the population,a portion of which will be susceptible to,and consequently express autism.A re-evaluation of all benefits and harms of supine sleep is warranted.If the SIDS mechanism proposed and autism model presented can be verified,the research agenda may be better directed,in order to further decrease SIDS,and reduce autism incidence.
文摘Background: We investigated the differences between partial pressure of arterial carbon dioxide and end-tidal carbon dioxide (P(a-ET)CO2) with respect to the Broca-Katsura index (BKI), which is an obesity index, in obese patients during general anesthesia. Materials and Methods: From January 2003 to December 2013, we studied 601 patients aged 16 years old or over undergoing general anesthesia. Patients had American Society of Anesthesiology physical status I and II and we reviewed their anesthetic charts. The P(a-ET)CO2 with respect to the BKI divided patients into two groups: 16 to 2 values between the two groups. Results: In patients aged 16 to 2 was 2.2 ± 3.1 mmHg at BKI 2 was 3.2 ± 4.1 mmHg at BKI 2 tends to increase in obese patients during general anesthesia with increasing BKI in patients aged 16 to < 65 years old.
文摘Objective: to analyze the role of nursing intervention in the prevention of supine hypotension syndrome by caesarean section, to sort out the research data reports, and to provide a theoretical basis for the related work. Method: from July 2019 to July 2021 in our hospital to complete maternal delivery of 106 cases, according to the admission order to two groups, into the control group of 53 cases, carry out routine care, into observation group 53 cases, prevent supine hypotension syndrome nursing intervention, evaluation of maternal psychological status, statistics of hypotension syndrome, and investigate satisfaction. Result: (1) Mental state score. The SAS and SDS scores decreased in both groups compared to before the intervention, SAS (47.88 ± 5.69) points and SDS (53.51 ± 1.92) points were significantly lower than SAS (54.23 ± 6.41) points and SDS (57.43 ± 7.25) points. There is a significant statistical value difference (P <0.05);(2) The incidence of hypotension syndrome between groups, the observation group of 1.89% was significantly lower than the 98.11% in the control group, there is a significant statistical value difference (P <0.05);(3) Compared with the two groups of satisfaction, the observation group 98.11% was significantly higher than the control group 79.25%, There is a significant statistical value difference (P <0.05). Conclusion: in the cesarean delivery, the nursing intervention of supine hypotension syndrome is helpful to maintain peace of mind, reduce the risk of hypotension syndrome and improve nursing satisfaction.
文摘Objective: to explore the application effect of human assisted air cushion in sacral tail pressure ulcer nursing. Methods: with the help of computer virtual simulation technology, the sacral tail auxiliary air cushion was designed, and the stress level of the pressure ulcer was calculated. A total of 110 patients with pressure ulcers admitted to our hospital were selected as the research subjects, 55 of them. Patients in the experimental group used the above methods for nursing treatment, while patients in the control group used the routine nursing mode to compare and analyze the nursing situation of the two groups, and record relevant data. Results: experimental group patients waist and thigh use the auxiliary air cushion, can greatly reduce the sacral tail pressure ulcer progress, patient comfort greatly improved, pressure ulcer problem effectively improved, the control group patients also improved, but all aspects improved than the experimental group patients ideal. Conclusion: pressure analysis of supine sacrotail pressure ulcer and strengthening decompression care can better help patients recover to health, which is worth further promotion and application in clinical practice, and further strengthen the attention of related nursing mode.
文摘Objective To discuss semilateral supine position for retroperitoneoscopic adrenalectomy. Methods From Jan. 2006 to Dec. 2008,36 patients ( 20 males and 16 females with mean age of 43 years) underwent retroperito-neoscopic adrenalectomy in 60° - 70°semilateral
基金supported by the Natural Science Foundation of Hunan Province(2022JJ30908)Innovation Guidance Project of Clinical Medical Technology of Hunan Province(2021SK53710).
文摘This case study demonstrates a single-position supine approach for robotic retroperitoneal lymph node dissection(R-RPLDN)for the treatment of nonseminomatous germ cell tumors and residual masses after chemotherapy.We performed a bilateral R-RPLDN in a 33-year-old man with nonseminomatous germ cell tumors and residual postchemotherapy masses.For this approach,the patient was placed in a steep Trendelenburg position,and a 5-port transperitoneal technique was used,with the robot docked so that the arms were oriented cephalad.This approach allowed simultaneous access to both sides of the retroperitoneum,thereby eliminating the need for bilateral lymphadenectomy and patient repositioning.Bilateral R-RPLDN was performed using a single-position supine approach.This versatile approach offers a less invasive,more efficient,and safer solution for removing residual postchemotherapy testicular cancer masses.
文摘Objectives:To compare operative times,safety,and effectiveness of percutaneous nephrolithotomy in the supine versus prone position.Materials and methods:An observational study of 100 patients was conducted in our institution for 2years from 2018 to 2020 divided into 2 groups:50 patients underwent modified supine percutaneous nephrolithotomy(PCNL)and 50 patients underwent standard prone PCNL.The inclusion criteria included a renal calculus(calyx or pelvis)of any size for which PCNL was indicated and exclusion criteria were patients having contraindications for PCNL such as bleeding disorders,pregnancy,high risk,and co-morbid conditions.The measured data included operative time,number of punctures,stone-free rate,length of hospital stays,and rate of complications.Results:The 2 groups were comparable in mean age,male to female ratio,calculus size,number of punctures,residual calculi,and postoperative fever and pain.The mean difference of hemoglobin in the supine PCNL group was 0.37 g/dL whereas in the prone PCNL group it was 0.61 g/dL.The p value was significant at 0.043.The mean time to finish from initial postion was 72.24 minutes in supine PCNL and 88.12 minutes in prone PCNL.The p value was significant(p<0.001).The mean time before puncture was 20.92 minutes in the supine position and 31.84 minutes in the prone position.The p value was significant(p<0.001).The mean time from puncture to finish was 51.32 minutes in the supine position and 56.28 minutes in the prone position.The p value was significant(p<0.001).Conclusions:As observed from this study,supine PCNL is associated with a significantly reduced operating time when compared to conventional prone position PCNL procedures.The postoperative complications such as pain and fever were not significantly different.Hence,the supine PCNL is an equally effective modality for treatment of a renal calculus with benefits of simultaneous retrograde access and less operative time compared to the prone PCNL.
文摘The direct anterior approach to the hip has been suggested to have several advantages compared to previously popular approaches through its use of an intra-muscular and intra-nervous interval betweenthe tensor fasciae latae and sartorius muscles. Recent increased interest in tissue-sparing and minimallyinvasive arthroplasty has given rise to a sharp increase in the utilization of direct anterior total hip arthroplasty. A number of variations of the procedure have been described and several authors have published their experiences and feedback to successfully accomplishing this procedure. Additionally, improved understanding of relevant soft tissue constraints and anatomic variants has provided improved margin of safety for patients. The procedure may be performed using speciallydesigned instruments and a fracture table, however many authors have also described equally efficacious performance using a regular table and standard arthroplasty tools. The capacity to utilize fluoroscopy intraoperatively for component positioning is a valuable asset to the approach and can be of particular benefit for surgeons gaining familiarity. Proper management of patient and limb positioning are vital to reducing risk of intra-operative complications. An understanding of its limitations and challenges are also critical to safe employment. This review summarizes the key features of the direct anterior approach for total hip arthroplasty as an aid to improving the understanding of this important and effective method for modern hip replacement surgeons.
文摘Acute compartment syndrome(ACS) of the thigh following primary total hip arthroplasty(THA) is a highly uncommon complication and has not yet been reported before with regards to the anterior approach through the anterior supine interval. We present a case of a 69-year-old male patient with a history of stroke, who developed ACS of the thigh after elective THA while using therapeutic low molecular weight heparin as bridging for regular oral anticoagulation. ACS pathogenesis, diagnostic tools, treatment and relevant literature are discussed. The patient's ACS was recognized in time and treated by operative decompression with fasciotomy of the anterior compartment. Follow-up did not show any neurological deficit or soft-tissue damage.
基金Supported by Science and Technology Plan of Jiangxi Provincial Health Commission,No.202130095.
文摘BACKGROUND Acute respiratory distress syndrome(ARDS)is an acute,diffuse,inflammatory lung injury.Previous studies have shown prone position ventilation(PPV)to be associated with improvement in oxygenation.However,its role in patients with ARDS caused by sepsis remains unknown.AIM To analyze the clinical effects of PPV in patients with ARDS caused by sepsis.METHODS One hundred and two patients with ARDS were identified and divided into a control group(n=55)and a PPV treatment group(n=47).Outcomes included oxygenation index,lung compliance(Cst)and platform pressure(Pplat),which were compared between the two groups after ventilation.Other outcomes included heart rate(HR),mean arterial pressure(MAP),central venous pressure(CVP),left ventricular ejection fraction(LVEF),the length of mechanical ventilation time and intensive care unit(ICU)stay,and levels of C-reactive protein(CRP),procalcitonin(PCT),and interleukin-6(IL-6)after ventilation.Finally,mortality rate was also compared between the two groups.RESULTS On the first day after ventilation,the oxygenation index and Cst were higher and Pplat level was lower in the PPV group than in the conventional treatment group(P<0.05).There were no significant differences in oxygenation index,Cst,and Pplat levels between the two groups on the 2^(nd),4^(th),and 7^(th) day after ventilation(P>0.05).There were no significant differences in HR,MAP,CVP,LVEF,duration of mechanical ventilation and ICU stay,and the levels of CRP,PCT,and IL-6 between the two groups on the first day after ventilation(all P>0.05).The mortality rates on days 28 and 90 in the PPV and control groups were 12.77% and 29.09%,and 25.53% and 45.45%,respectively(P<0.05).CONCLUSION PPV may improve respiratory mechanics indices and may also have mortality benefit in patients with ARDS caused by sepsis.Finally,PPV was not shown to cause any adverse effects on hemodynamics and inflammation indices.
文摘AIM： To investigate the difference in kappa angle between sitting and supine positions during laser-assisted in situ keratomileusis（LASIK）.·METHODS： A retrospective study was performed on395 eyes from 215 patients with myopia that received LASIK. Low, moderate, and high myopia groups were assigned according to diopters. The horizontal and vertical components of kappa angle in sitting position were measured before the operation, and in supine position during the operation. The data from the two positions were compared and the relationship between kappa angle and diopters were analyzed.· RESULTS： Two hundred and twenty-three eyes（56.5%） in sitting position and 343 eyes（86.8%） in supine position had positive kappa angles. There were no significant differences in horizontal and vertical components of kappa angle in the sitting position or horizontal components of kappa angle in the supine position between the three groups（P 〉0.05）. A significant difference in the vertical components of kappa angle in the supine position was seen in the three groups（P 〈0.01）. Differences in both horizontal and vertical components of kappa angles were significant between the sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angles（P 〈0.05） were found and vertical components of kappa angle in sitting and supine positions were negatively correlated with the degree of myopia（sitting position： r =-0.109; supine position： r =-0.172; P 〈0.05）.·CONCLUSION： There is a correlation in horizontal and vertical components of kappa angle in sitting and supine positions. Positive correlations in both horizontal and vertical components of kappa angle in sitting and supine positions till the end of the results. This result still needs further observation. Clinicians should take into account different postures when excimer laser surgery needs to be performed.
文摘AIM:To compare the posture-induced variations in intraocular pressure(IOP)between the primary open angle glaucoma(POAG)and non-glaucomatous eyes.METHODS:A case-controlled age matched study was conducted in 55 successive newly diagnosed POAG and 56 non-glaucomatous patients seen in glaucoma clinic and general outpatient eye clinic in the Alex Ekwueme University Teaching Hospital,Abakaliki.The IOPs of eligible correspondents were measured with Perkin’s hand-held tonometer in the sitting,supine flat and supine with pillow positions respectively.Measurement of IOP in each position was done after 15 min of assuming such posture.RESULTS:The IOP difference between the sitting and supine flat position was significantly higher in the POAG than non-glaucoma subjects(7.68±2.08 vs 4.03±0.13 mm Hg,P<0.001).The IOP difference between the sitting and supine with pillow positions was 2.61±1.49 mm Hg for POAG and 1.44±0.70 mm Hg in non-glaucoma(P<0.001),while difference between supine flat and supine with pillow positions was 5.07±2.24 mm Hg in POAG and 2.59±0.66 mm Hg in non-glaucomatous patients(P<0.001).CONCLUSION:Greater variations in posture induced IOP occurred in POAG patients than non-glaucomatous.The posture induced IOP variation is lowest in the sitting position and highest in the supine flat position.Evaluation of posture induced IOP changes may be an important tool in the management of glaucoma.
