Objective:To investigate the effect of a chest compression device for scar prevention combined with a nurse-patient WeChat group on scar formation after keloid excision.Methods:Forty patients with chest wall keloids w...Objective:To investigate the effect of a chest compression device for scar prevention combined with a nurse-patient WeChat group on scar formation after keloid excision.Methods:Forty patients with chest wall keloids who underwent keloid excision surgery at the Department of Plastic and Reconstructive Surgery,First Medical Center of PLA General Hospital from June 2022 to June 2024 were selected.They were randomly divided into two groups:the observation group(20 cases)and the control group(20 cases).Both groups underwent routine keloid excision,followed by compression therapy for 6 months.The observation group used a chest compression device,while the control group used a compression garment.Scar width,hypertrophy,and Vancouver Scar Scale(VSS)scores were compared between the two groups.Results:There were no significant differences between the two groups in terms of gender,age,disease course,lesion area,and lesion site(P>0.05).The overall effective rate in the observation group was 95.00%,significantly higher than the 65.00%in the control group,with a statistically significant difference(P<0.05).After a 6-month follow-up,all VSS indicators(except for pliability)in the observation group(using the chest compression device)were significantly lower than those in the control group(P<0.05).Conclusion:Compared to the traditional compression garment,the chest compression device for scar prevention is more effective in preventing scar hypertrophy after chest wall keloid excision and improving the appearance of scars.It is worth promoting for clinical application.展开更多
Objective:To explore the effectiveness of a chest compression device combined with extended self-care for scar prevention in patients following keloid excision surgery.Methods:Forty patients(36 lesions)who underwent k...Objective:To explore the effectiveness of a chest compression device combined with extended self-care for scar prevention in patients following keloid excision surgery.Methods:Forty patients(36 lesions)who underwent keloid excision surgery at the Department of Plastic and Reconstructive Surgery,First Medical Center,PLA General Hospital from June 2022 to June 2024 were selected.They were randomly divided into an experimental group and a control group,with 20 patients in each group.The control group received traditional elastic garment compression therapy,while the experimental group used a chest compression device designed for scar prevention.Scar width,hypertrophy,and Vancouver Scar Scale(VSS)scores were compared between the two groups at 6 months post-operation.Results:There were no statistically significant differences between the two groups in terms of gender,age,disease duration,lesion area,or location(P>0.05).However,VSS scores(except for pliability)in the experimental group were significantly lower than those in the control group(P<0.05).Conclusion:The chest compression device for scar prevention is more effective than traditional elastic garments in preventing scar hypertrophy after chest wall keloid excision surgery,and it has high clinical value,making it worthy of promotion.展开更多
Objective: Transradial coronary catheterization has proved to be safe and effective in clinical practice. Various hemostatic compressive devices have been used in subsequent procedures. The objective of this study was...Objective: Transradial coronary catheterization has proved to be safe and effective in clinical practice. Various hemostatic compressive devices have been used in subsequent procedures. The objective of this study was to compare the efficacy and safety of a new hemostatic compression device and the widely used TR Band. Methods: A total of 118 patients were divided randomly into two groups: TR Band and the new hemostatic compression device. Efficacy of hemostasis, patient comfort, local vascular dysfunction, and radial artery occlusion(RAO) were evaluated and compared between groups. Results: Occurrence of errhysis or hematoma did not significantly differ between groups(13.6% vs. 11.9%, P = 0.782). Fewer patients had moderate to severe pain or moderate to severe numbness in the new hemostatic compression device group(1.7% vs. 22.0%; 1.7% vs. 18.6%, respectively). Pulse loss between distal artery and device was lower in the new hemostatic compression device group(5.1% vs. 22.0%, P = 0.007), and fewer patients experienced obstruction of venous reflux compared with the TR Band group(6.8% vs. 25.4%, P = 0.006). Combined incidence of RAO at discharge was 7.6%, and was lower in the new hemostatic compression device group(1.7% vs. 13.6%, P = 0.015). In contrast to the TR Band, application of the new hemostatic compression device was independently associated with lower incidence of RAO at discharge(odds ratio: 0.062, 95% confidence interval: 0.006–0.675, P = 0.022). Conclusions: Both the new hemostatic compression device and the TR Band can efficiently achieve hemostasis following transradial coronary catheterization. However, fewer patients felt discomfort with application of the new hemostatic compression device. Pulse loss in the artery distal to the compression device, obstruction of venous reflux, and RAO occurred significantly less often with application of the new device.展开更多
BACKGROUND Although previous studies have confirmed the feasibility of magnetic compression anastomosis(MCA),there is still a risk of long-term anastomotic stenosis.For traditional MCA devices,a large device is associ...BACKGROUND Although previous studies have confirmed the feasibility of magnetic compression anastomosis(MCA),there is still a risk of long-term anastomotic stenosis.For traditional MCA devices,a large device is associated with great pressure,and eventually increased leakage.AIM To develop a novel MCA device to simultaneously meet the requirements of pressure and size.METHODS Traditional nummular MCA devices of all possible sizes were used to conduct ileac anastomosis in rats.The mean(±SD)circumference of the ileum was 13.34±0.12 mm.Based on short-and long-term follow-up results,we determined the appropriate pressure range and minimum size.Thereafter,we introduced a novel“fedora-type”MCA device,which entailed the use of a nummular magnet with a larger sheet metal.RESULTS With traditional MCA devices,the anastomoses experienced stenosis and even closure during the long-term follow-up when the anastomat was smaller thanΦ5 mm.However,the risk of leakage increased when it was larger thanΦ4 mm.On comparison of the different designs,it was found that the“fedora-type”MCA device should be composed of aΦ4-mm nummular magnet with aΦ6-mm sheet metal.CONCLUSION The diameter of the MCA device should be greater than 120%of the enteric diameter.The novel“fedora-type”MCA device controls the pressure and optimizes the size.展开更多
BACKGROUND:To investigate the clinical effectiveness of a pneumatic compression device(PCD)combined with low-molecular-weight heparin(LMWH)for the prevention and treatment of deep vein thrombosis(DVT)in trauma patient...BACKGROUND:To investigate the clinical effectiveness of a pneumatic compression device(PCD)combined with low-molecular-weight heparin(LMWH)for the prevention and treatment of deep vein thrombosis(DVT)in trauma patients.METHODS:This study retrospectively analyzed 286 patients with mild craniocerebral injury and clavicular fractures admitted to our department from January 2016 to February 2020.Patients treated with only LMWH served as the control group,and patients treated with a PCD combined with LMWH as the observation group.The incidence of DVT,postoperative changes in the visual analogue scale(VAS)score,and coagulation function were observed and compared between the two groups.Excluding the influence of other single factors,binary logistic regression analysis was used to evaluate the use of a PCD in the patient’s postoperative coagulation function.RESULTS:After excluding 34 patients who did not meet the inclusion criteria,252 patients were were included.The incidence of DVT in the observation group was significantly lower than that in the control group(5.6%vs.15.1%,χ^(2)=4.605,P<0.05).The postoperative VAS scores of the two groups were lower than those before surgery(P<0.05).The coagulation function of the observation group was significantly higher than that of the control group,with a better combined anticoagulant effect(P<0.05).There were no significant differences between the two groups in preoperative or postoperative Glasgow Coma Scale scores,intraoperative blood loss,postoperative infection rate,or length of hospital stay(P>0.05).According to logistic regression analysis,the postoperative risk of DVT in patients who received LMWH alone was 1.764 times that of patients who received LMWH+PCD(P<0.05).The area under the receiver operating characteristic(AUROC)curve of partial thromboplastin time(APTT)and platelet(PLT)were greater than 0.5,indicating that they were the influence indicators of adding PCD to prevent DVT.Excluding the influence of other variables,LMWH+PCD effectively improved the coagulation function of patients.CONCLUSIONS:Compared with LMWH alone,LMWH+PCD could improve blood rheology and coagulation function in patients with traumatic brain injury and clavicular fracture,reduce the incidence of DVT,shorten the length of hospital stay,and improve the clinical effectiveness of treatment.展开更多
Mechanical automated compression devices are being used in cardiopulmonary resuscitation instead of manual,“hands-on”,rescuer-delivered chest compressions.The-theoretical-advantages include high-quality non-stop com...Mechanical automated compression devices are being used in cardiopulmonary resuscitation instead of manual,“hands-on”,rescuer-delivered chest compressions.The-theoretical-advantages include high-quality non-stop compressions,thus freeing the rescuer performing the compressions and additionally the ability of the rescuer to stand reasonably away from a potentially“hazardous”victim,or from hazardous and/or difficult resuscitation conditions.Such circumstances involve cardiopulmonary resuscitation(CPR)in the Cardiac Catheterization Laboratory,especially directly under the fluoroscopy panel,where radiation is well known to cause detrimental effects to the rescuer,and CPR during/after land or air transportation of cardiac arrest victims.Lastly,CPR in a coronavirus disease 2019 patient/ward,where the danger of contamination and further serious illness of the health provider is very existent.The scope of this review is to review and present literature and current guidelines regarding the use of mechanical compressions in these“hostile”and dangerous settings,while comparing them to manual compressions.展开更多
A new experimental device has been developed for analyzing compression load deflection of the door seal by using stereovision theory. Precision instruments of optical grating and force sensor are also integrated in th...A new experimental device has been developed for analyzing compression load deflection of the door seal by using stereovision theory. Precision instruments of optical grating and force sensor are also integrated in this device. Force-displacement response characteristics of compression at varied speed can be controlled. Solid foundations for characteristic and structure as well as optimization design of the car door seal are elucidated.展开更多
A new method which employs compressive sensing(CS) to reconstruct the sparse spectrum is designed and experimentally demonstrated. On the basis of CS theory, the simulation results indicate that the probability of rec...A new method which employs compressive sensing(CS) to reconstruct the sparse spectrum is designed and experimentally demonstrated. On the basis of CS theory, the simulation results indicate that the probability of reconstruction is high when the step of the sparsity adaptive matching pursuit algorithm is confirmed as 1. Contrastive analysis for four kinds of commonly used measurement matrices: part Hadamard, Bernoulli, Toeplitz and Circular matrix, has been conducted. The results illustrate that the part Hadamard matrix has better performance of reconstruction than the other matrices. The experimental system of the spectral compression reconstruction is mainly based on the digital micro-mirror device(DMD). The experimental results prove that CS can reconstruct sparse spectrum well under the condition of 50% sampling rate. The system error 0.0781 is obtained, which is defined by the average value of the 2-norm. Furthermore, the proposed method shows a dominant ability to discard redundancy.展开更多
AIM To report 17-mo experience of femoral artery puncture site closure during angiographic procedures using Exo Seal vascular closure devices(VCDs).METHODS Between November 2015 and April 2017, we performed 179 diagno...AIM To report 17-mo experience of femoral artery puncture site closure during angiographic procedures using Exo Seal vascular closure devices(VCDs).METHODS Between November 2015 and April 2017, we performed 179 diagnostic and interventional angiographic procedures via a common femoral arterial access.The Exo Seal VCD was used at the puncture site to achieve hemostasis in 125 patients.We evaluated the technical and procedural success rates, the complications, and the factors affecting the hemostasis time of the ExoSeal VCDs.RESULTS Technical and procedural successes were achieved in 176 cases(98.0%) and 128 cases(71.5%), respectively.Device failure occurred in 3(1.7%) cases.In 1 case(0.6%) a small hematoma developed, but there were no major complications.Among the hemostasis-relevant variables, a history of drinking alcohol, low platelet(PLT) count, and high prothrombin time-international normalized ratio(commonly known as PT-INR) values were the statistically significant predictors of the need for longer manual compression(MC).There was no difference in the success rates between the repeat and single Exo Seal procedure groups, and repeated use of the ExoSeal did not affect hemostasis time.CONCLUSION The ExoSeal VCD effectively achieves hemostasis, with few complications.Longer light MC may be needed with alcohol drinkers, low PLT count, and high PT-INR values.展开更多
The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa ...The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa m generated by this system presented superior viscous and wetting properties to water.A pendulum system was designed to measure yield stress of foam. The results pro ved the existence of yield stress of foam. And the increasing tendency of yield stress with gas fraction and bubble size has also been found out.展开更多
文摘Objective:To investigate the effect of a chest compression device for scar prevention combined with a nurse-patient WeChat group on scar formation after keloid excision.Methods:Forty patients with chest wall keloids who underwent keloid excision surgery at the Department of Plastic and Reconstructive Surgery,First Medical Center of PLA General Hospital from June 2022 to June 2024 were selected.They were randomly divided into two groups:the observation group(20 cases)and the control group(20 cases).Both groups underwent routine keloid excision,followed by compression therapy for 6 months.The observation group used a chest compression device,while the control group used a compression garment.Scar width,hypertrophy,and Vancouver Scar Scale(VSS)scores were compared between the two groups.Results:There were no significant differences between the two groups in terms of gender,age,disease course,lesion area,and lesion site(P>0.05).The overall effective rate in the observation group was 95.00%,significantly higher than the 65.00%in the control group,with a statistically significant difference(P<0.05).After a 6-month follow-up,all VSS indicators(except for pliability)in the observation group(using the chest compression device)were significantly lower than those in the control group(P<0.05).Conclusion:Compared to the traditional compression garment,the chest compression device for scar prevention is more effective in preventing scar hypertrophy after chest wall keloid excision and improving the appearance of scars.It is worth promoting for clinical application.
文摘Objective:To explore the effectiveness of a chest compression device combined with extended self-care for scar prevention in patients following keloid excision surgery.Methods:Forty patients(36 lesions)who underwent keloid excision surgery at the Department of Plastic and Reconstructive Surgery,First Medical Center,PLA General Hospital from June 2022 to June 2024 were selected.They were randomly divided into an experimental group and a control group,with 20 patients in each group.The control group received traditional elastic garment compression therapy,while the experimental group used a chest compression device designed for scar prevention.Scar width,hypertrophy,and Vancouver Scar Scale(VSS)scores were compared between the two groups at 6 months post-operation.Results:There were no statistically significant differences between the two groups in terms of gender,age,disease duration,lesion area,or location(P>0.05).However,VSS scores(except for pliability)in the experimental group were significantly lower than those in the control group(P<0.05).Conclusion:The chest compression device for scar prevention is more effective than traditional elastic garments in preventing scar hypertrophy after chest wall keloid excision surgery,and it has high clinical value,making it worthy of promotion.
基金provided by the National Natural Science Foundation of China(81500335)
文摘Objective: Transradial coronary catheterization has proved to be safe and effective in clinical practice. Various hemostatic compressive devices have been used in subsequent procedures. The objective of this study was to compare the efficacy and safety of a new hemostatic compression device and the widely used TR Band. Methods: A total of 118 patients were divided randomly into two groups: TR Band and the new hemostatic compression device. Efficacy of hemostasis, patient comfort, local vascular dysfunction, and radial artery occlusion(RAO) were evaluated and compared between groups. Results: Occurrence of errhysis or hematoma did not significantly differ between groups(13.6% vs. 11.9%, P = 0.782). Fewer patients had moderate to severe pain or moderate to severe numbness in the new hemostatic compression device group(1.7% vs. 22.0%; 1.7% vs. 18.6%, respectively). Pulse loss between distal artery and device was lower in the new hemostatic compression device group(5.1% vs. 22.0%, P = 0.007), and fewer patients experienced obstruction of venous reflux compared with the TR Band group(6.8% vs. 25.4%, P = 0.006). Combined incidence of RAO at discharge was 7.6%, and was lower in the new hemostatic compression device group(1.7% vs. 13.6%, P = 0.015). In contrast to the TR Band, application of the new hemostatic compression device was independently associated with lower incidence of RAO at discharge(odds ratio: 0.062, 95% confidence interval: 0.006–0.675, P = 0.022). Conclusions: Both the new hemostatic compression device and the TR Band can efficiently achieve hemostasis following transradial coronary catheterization. However, fewer patients felt discomfort with application of the new hemostatic compression device. Pulse loss in the artery distal to the compression device, obstruction of venous reflux, and RAO occurred significantly less often with application of the new device.
文摘BACKGROUND Although previous studies have confirmed the feasibility of magnetic compression anastomosis(MCA),there is still a risk of long-term anastomotic stenosis.For traditional MCA devices,a large device is associated with great pressure,and eventually increased leakage.AIM To develop a novel MCA device to simultaneously meet the requirements of pressure and size.METHODS Traditional nummular MCA devices of all possible sizes were used to conduct ileac anastomosis in rats.The mean(±SD)circumference of the ileum was 13.34±0.12 mm.Based on short-and long-term follow-up results,we determined the appropriate pressure range and minimum size.Thereafter,we introduced a novel“fedora-type”MCA device,which entailed the use of a nummular magnet with a larger sheet metal.RESULTS With traditional MCA devices,the anastomoses experienced stenosis and even closure during the long-term follow-up when the anastomat was smaller thanΦ5 mm.However,the risk of leakage increased when it was larger thanΦ4 mm.On comparison of the different designs,it was found that the“fedora-type”MCA device should be composed of aΦ4-mm nummular magnet with aΦ6-mm sheet metal.CONCLUSION The diameter of the MCA device should be greater than 120%of the enteric diameter.The novel“fedora-type”MCA device controls the pressure and optimizes the size.
文摘BACKGROUND:To investigate the clinical effectiveness of a pneumatic compression device(PCD)combined with low-molecular-weight heparin(LMWH)for the prevention and treatment of deep vein thrombosis(DVT)in trauma patients.METHODS:This study retrospectively analyzed 286 patients with mild craniocerebral injury and clavicular fractures admitted to our department from January 2016 to February 2020.Patients treated with only LMWH served as the control group,and patients treated with a PCD combined with LMWH as the observation group.The incidence of DVT,postoperative changes in the visual analogue scale(VAS)score,and coagulation function were observed and compared between the two groups.Excluding the influence of other single factors,binary logistic regression analysis was used to evaluate the use of a PCD in the patient’s postoperative coagulation function.RESULTS:After excluding 34 patients who did not meet the inclusion criteria,252 patients were were included.The incidence of DVT in the observation group was significantly lower than that in the control group(5.6%vs.15.1%,χ^(2)=4.605,P<0.05).The postoperative VAS scores of the two groups were lower than those before surgery(P<0.05).The coagulation function of the observation group was significantly higher than that of the control group,with a better combined anticoagulant effect(P<0.05).There were no significant differences between the two groups in preoperative or postoperative Glasgow Coma Scale scores,intraoperative blood loss,postoperative infection rate,or length of hospital stay(P>0.05).According to logistic regression analysis,the postoperative risk of DVT in patients who received LMWH alone was 1.764 times that of patients who received LMWH+PCD(P<0.05).The area under the receiver operating characteristic(AUROC)curve of partial thromboplastin time(APTT)and platelet(PLT)were greater than 0.5,indicating that they were the influence indicators of adding PCD to prevent DVT.Excluding the influence of other variables,LMWH+PCD effectively improved the coagulation function of patients.CONCLUSIONS:Compared with LMWH alone,LMWH+PCD could improve blood rheology and coagulation function in patients with traumatic brain injury and clavicular fracture,reduce the incidence of DVT,shorten the length of hospital stay,and improve the clinical effectiveness of treatment.
文摘Mechanical automated compression devices are being used in cardiopulmonary resuscitation instead of manual,“hands-on”,rescuer-delivered chest compressions.The-theoretical-advantages include high-quality non-stop compressions,thus freeing the rescuer performing the compressions and additionally the ability of the rescuer to stand reasonably away from a potentially“hazardous”victim,or from hazardous and/or difficult resuscitation conditions.Such circumstances involve cardiopulmonary resuscitation(CPR)in the Cardiac Catheterization Laboratory,especially directly under the fluoroscopy panel,where radiation is well known to cause detrimental effects to the rescuer,and CPR during/after land or air transportation of cardiac arrest victims.Lastly,CPR in a coronavirus disease 2019 patient/ward,where the danger of contamination and further serious illness of the health provider is very existent.The scope of this review is to review and present literature and current guidelines regarding the use of mechanical compressions in these“hostile”and dangerous settings,while comparing them to manual compressions.
基金Supported by Science and Technology Development Foundation of Shanghai Automotive Industry (1315A)
文摘A new experimental device has been developed for analyzing compression load deflection of the door seal by using stereovision theory. Precision instruments of optical grating and force sensor are also integrated in this device. Force-displacement response characteristics of compression at varied speed can be controlled. Solid foundations for characteristic and structure as well as optimization design of the car door seal are elucidated.
基金supported by the National Natural Science Foundation of China(Nos.61002013 and 11504435)the Natural Science Foundation of Hubei Province(No.2014CFA051)+1 种基金the Key Technology R&D Program of Hubei Province(No.2015BCE048)the Fundamental Research Funds for the Central Universities,South-Central University for Nationalities(Nos.CZY13034,CZW15055 and CZP17026)
文摘A new method which employs compressive sensing(CS) to reconstruct the sparse spectrum is designed and experimentally demonstrated. On the basis of CS theory, the simulation results indicate that the probability of reconstruction is high when the step of the sparsity adaptive matching pursuit algorithm is confirmed as 1. Contrastive analysis for four kinds of commonly used measurement matrices: part Hadamard, Bernoulli, Toeplitz and Circular matrix, has been conducted. The results illustrate that the part Hadamard matrix has better performance of reconstruction than the other matrices. The experimental system of the spectral compression reconstruction is mainly based on the digital micro-mirror device(DMD). The experimental results prove that CS can reconstruct sparse spectrum well under the condition of 50% sampling rate. The system error 0.0781 is obtained, which is defined by the average value of the 2-norm. Furthermore, the proposed method shows a dominant ability to discard redundancy.
文摘AIM To report 17-mo experience of femoral artery puncture site closure during angiographic procedures using Exo Seal vascular closure devices(VCDs).METHODS Between November 2015 and April 2017, we performed 179 diagnostic and interventional angiographic procedures via a common femoral arterial access.The Exo Seal VCD was used at the puncture site to achieve hemostasis in 125 patients.We evaluated the technical and procedural success rates, the complications, and the factors affecting the hemostasis time of the ExoSeal VCDs.RESULTS Technical and procedural successes were achieved in 176 cases(98.0%) and 128 cases(71.5%), respectively.Device failure occurred in 3(1.7%) cases.In 1 case(0.6%) a small hematoma developed, but there were no major complications.Among the hemostasis-relevant variables, a history of drinking alcohol, low platelet(PLT) count, and high prothrombin time-international normalized ratio(commonly known as PT-INR) values were the statistically significant predictors of the need for longer manual compression(MC).There was no difference in the success rates between the repeat and single Exo Seal procedure groups, and repeated use of the ExoSeal did not affect hemostasis time.CONCLUSION The ExoSeal VCD effectively achieves hemostasis, with few complications.Longer light MC may be needed with alcohol drinkers, low PLT count, and high PT-INR values.
文摘The paper described a newly developed high performance compressed air foam system(CAFS). The effective system generates uniform foam w ith greater momentum by injecting compressed air into flowing foam solution. Foa m generated by this system presented superior viscous and wetting properties to water.A pendulum system was designed to measure yield stress of foam. The results pro ved the existence of yield stress of foam. And the increasing tendency of yield stress with gas fraction and bubble size has also been found out.
