Ni-Al hydrotalcite derived catalyst （Ni-Al2O3-HT） exhibited a narrow Ni particle-size distribution with an average particle size of 4.0 nm. Methanation of CO2 over this catalyst initiated at 225℃ and reached 82.5% ...Ni-Al hydrotalcite derived catalyst （Ni-Al2O3-HT） exhibited a narrow Ni particle-size distribution with an average particle size of 4.0 nm. Methanation of CO2 over this catalyst initiated at 225℃ and reached 82.5% CO2 conversion with 99.5% CH4 selectivity at 350℃, which was much better than its impregnated counterpart. Characterizations by means of CO2 microcalorimetry and 27 Al NMR indicated that large amount of strong basic sites existed on Ni-Al2O3-HT, originated from the formation of Ni-O-Al structure. The existence of strong basic sites facilitated the activation of CO2 and consequently promoted the activity. The combination of highly dispersed Ni with strong basic support led to its unique and high efficiency for this reaction. Keywords展开更多
BACKGROUND:Basic life support(BLS),a key component of the chain of survival decreases the arrest-cardiopulmonary resuscitation interval and increases the rate of hospital discharge.The study aimed to explore the knowl...BACKGROUND:Basic life support(BLS),a key component of the chain of survival decreases the arrest-cardiopulmonary resuscitation interval and increases the rate of hospital discharge.The study aimed to explore the knowledge of and attitude towards basic life support(BLS)among medical/paramedical professionals.METHODS:An observational study was conducted by assessing response to self prepared questionnaire consisting of the demographic information of the medical/paramedical staff,their personnel experience/attitude and knowledge of BLS based on the 2005 BLS Guidelines of European Resuscitation Council.RESULTS:After excluding incomplete questionnaires,the data from 121 responders(27 clinical faculty members,21 dental and basic sciences faculty members,29 house officers and 44 nurses and health assistants)were analyzed.Only 9(7.4%)of the 121 responders answered≥11,53(43%)answered 7-10,and 58(48%)answered<7 of 15 questions correctly.The clinical faculty members,house officers and nurses/HA had a mean score of 7.4±3.15,7.37±2.02 and 6.63±2.16 respectively,while dental/basic sciences faculty members attained a least mean score of 4.52±2.13(P<0.001).Those who had received cardiopulmonary resuscitation(CPR)training within 5 years obtained a highest mean score of 8.62±2.49,whereas those who had the training more than 5 years back or no training obtained a mean score of 5.54±2.38 and 6.1±2.29 respectively(P=0.001).Those who were involved in resuscitation frequently had a higher median score of 8 in comparison to those who were seldom involved or not involved at all(P<0.001).CONCLUSIONS:The average health personnel in our hospital lack adequate knowledge in CPR/BLS.Training and experience can enhance knowledge of CPR of these personnel.Thus standard of CPR/BLS training and assessment are recommended at our hospital.展开更多
BACKGROUND:Healthcare professionals are expected to have knowledge of current basic and advanced cardiac life support(BLS/ACLS) guidelines to revive unresponsive patients.METHODS:Across-sectional study was conducted t...BACKGROUND:Healthcare professionals are expected to have knowledge of current basic and advanced cardiac life support(BLS/ACLS) guidelines to revive unresponsive patients.METHODS:Across-sectional study was conducted to evaluate the current practices and knowledge of BLS/ACLS principles among healthcare professionals of North-Kerala using pretested self-administered structured questionnaire.Answers were validated in accordance with American Heart Association's BLS/ACLS teaching manual and the results were analysed.RESULTS:Among 461 healthcare professionals,141(30.6%) were practicing physicians,268(58.1%) were nurses and 52(11.3%) supporting staff.The maximum achievable score was 20(BLS15/ACLS 5).The mean score amongst all healthcare professionals was 8.9±4.7.The mean score among physicians,nurses and support staff were 8.6±3.4,9±3.6 and 9±3.3 respectively.The majority of healthcare professionals scored <50%(237,51.4%);204(44.3%) scored 51%-80%and 20(4.34%)scored >80%.Mean scores decreased with age,male sex and across occupation.Nurses who underwent BLS/ACLS training previously had significantly higher mean scores(10.2±3.4) than untrained(8.2±3.6,P=0.001).Physicians with <5 years experience(P=0.002) and nurses in the private sector(P=0.003)had significantly higher scores.One hundred and sixty three(35.3%) healthcare professionals knew the correct airway opening manoeuvres like head tilt,chin lift and jaw thrust.Only 54(11.7%) respondents were aware that atropine is not used in ACLS for cardiac arrest resuscitation and 79(17.1%) correctly opted ventricular fibrillation and pulseless ventricular tachycardia as shockable rhythms.The majority of healthcare professionals(356,77.2%) suggested that BLS/ACLS be included in academic curriculum.CONCLUSION:Inadequate knowledge of BLS/ACLS principles amongst healthcare professionals,especially physicians,illuminate lacunae in existing training systems and merit urgent redressal.展开更多
BACKGROUND:There are several reasons why resuscitation measures may lead to inferior results:difficulties in team building,delayed realization of the emergency and interruption of chest compression.This study investig...BACKGROUND:There are several reasons why resuscitation measures may lead to inferior results:difficulties in team building,delayed realization of the emergency and interruption of chest compression.This study investigated the outcome of a new form of in-hospital cardiopulmonary resuscitation(CPR) training with special focus on changes in self-assurance of potential helpers when faced with emergency situations.METHODS:Following a 12-month period of CPR training,questionnaires were distributed to participants and non-participants.Those non-participants who intended to undergo the training at a later date served as control group.RESULTS:The study showed that participants experienced a significant improvement in selfassurance,compared with their remembered self-assurance before the training.Their self-assurance also was significantly greater than that of the control group of non-participants.CONCLUSION:Short lessons in CPR have an impact on the self-assurance of medical and non-medical personnel.展开更多
BACKGROUND: The inclusion of cardiopulmonary resuscitation(CPR) in formal education has been a useful approach to providing basic life support(BLS) services. However, because not all students have been able to learn d...BACKGROUND: The inclusion of cardiopulmonary resuscitation(CPR) in formal education has been a useful approach to providing basic life support(BLS) services. However, because not all students have been able to learn directly from certified instructors, we studied the educational efficacy of the use of peer-assisted learning(PAL) to train high-school students to perform BLS services.METHODS: This study consisted of 187 high-school students: 68 participants served as a control group and received a 1-hour BLS training from a school nurse, and 119 were included in a PAL group and received a 1-hour CPR training from a PAL leader. Participants' BLS training was preceded by the completion of questionnaires regarding their background. Three months after the training, the participants were asked to respond to questionnaires about their willingness to perform CPR on bystander CPR and their retention of knowledge of BLS.RESULTS: We found no statistically significant difference between the control and PAL groups in their willingness to perform CPR on bystanders(control: 55.2%, PAL: 64.7%, P=0.202). The PAL group was not significantly different from the control group(control: 60.78±39.77, PAL: 61.76±17.80, P=0.848) in retention of knowledge about BLS services.CONCLUSION: In educating high school students about BLS, there was no significant difference between PAL and traditional education in increasing the willingness to provide CPR to bystanders or the ability to retain knowledge about BLS.展开更多
BACKGROUND: The quality of chest compressions can be significantly improved after training of rescuers according to the latest national guidelines of China. However, rescuers may be unable to maintain adequate compres...BACKGROUND: The quality of chest compressions can be significantly improved after training of rescuers according to the latest national guidelines of China. However, rescuers may be unable to maintain adequate compression or ventilation throughout a response of average emergency medical services because of increased rescuer fatigue. In the present study, we evaluated the performance of cardiopulmonary resuscitation(CPR) in training of military medical university students during a prolonged basic life support(BLS).METHODS: A 3-hour BLS training was given to 120 military medical university students. Six months after the training, 115 students performed single rescuer BLS on a manikin for 8 minutes. The qualities of chest compressions as well as ventilations were assessed.RESULTS: The average compression depth and rate were 53.7±5.3 mm and 135.1±15.7 compressions per minute respectively. The proportion of chest compressions with appropriate depth was 71.7%±28.4%. The average ventilation volume was 847.2±260.4 m L and the proportion of students with adequate ventilation was 63.5%. Compared with male students, significantly lower compression depth(46.7±4.8 vs. 54.6±4.8 mm, P<0.001) and adequate compression rate(35.5%±26.5% vs. 76.1%±25.1%, P<0.001) were observed in female students.CONCLUSIONS: CPR was found to be related to gender, body weight, and body mass index of students in this study. The quality of chest compressions was well maintained in male students during 8 minutes of conventional CPR but declined rapidly in female students after 2 minutes according to the latest national guidelines. Physical fitness and rescuer fatigue did not affect the quality of ventilation.展开更多
BACKGROUND: Life-threatening emergencies can occur at anytime, at anywhere and in anyone. Effective management of an emergency situation in the dental office is ultimately the dentist's responsibility. The lack of...BACKGROUND: Life-threatening emergencies can occur at anytime, at anywhere and in anyone. Effective management of an emergency situation in the dental office is ultimately the dentist's responsibility. The lack of training and inability to cope with medical emergencies can lead to tragic consequences and sometimes legal complications. Therefore, health professionals including dentists must be well prepared to deal with medical emergencies. This study was undertaken to assess the knowledge about and attitude towards basic life support(BLS) among dental interns and postgraduate students in Bangalore city, India.METHODS: A cross sectional survey was conducted among dental interns and postgraduate students from May 2014 to June 2014 since few studies have been conducted in Bangalore city. A questionnaire with 17 questions regarding the knowledge about and attitude towards BLS was distributed to 202 study participants.RESULTS: The data analyzed using the Chi-square test showed that dental interns and postgraduate students had average knowledge about BLS. In the 201 participants, 121(59.9%) had a positive attitude and 81(40.1%) had a negative attitude towards BLS.CONCLUSIONS: Cardiopulmonary resuscitation should be considered as part of the dental curriculum. Workshops on a regular basis should be focused on skills of cardiopulmonary resuscitation for dental students.展开更多
BACKGROUND: This cross-sectional study aimed to assess the knowledge, attitude and anxiety pertaining to basic life support(BLS) and medical emergencies among interns in dental colleges of Mangalore city, Karnataka, I...BACKGROUND: This cross-sectional study aimed to assess the knowledge, attitude and anxiety pertaining to basic life support(BLS) and medical emergencies among interns in dental colleges of Mangalore city, Karnataka, India.METHODS: The study subjects comprised of interns who volunteered from the four dental colleges. The knowledge and attitude of interns were assessed using a 30-item questionnaire prepared based on the Basic Life Support Manual from American Heart Association and the anxiety of interns pertaining to BLS and medical emergencies were assessed using a State-Trait Anxiety Inventory(STAI) Questionnaire. Chi-square test was performed on SPSS 21.0(IBM Statistics, 2012) to determine statistically signifi cant differences(P<0.05) between assessed knowledge and anxiety.RESULTS: Out of 183 interns, 39.89% had below average knowledge. A total of 123(67.21%) reported unavailability of professional training. The majority(180, 98.36%) felt the urgent need of training in basic life support procedures. Assessment of stress showed a total of 27.1% participants to be above highstress level. Comparison of assessed knowledge and stress was found to be insignifi cant(P=0.983).CONCLUSION: There was an evident lack of knowledge pertaining to the management of medical emergencies among the interns. As oral health care providers moving out to the society, a focus should be placed on the training of dental interns with respect to Basic Life Support procedures.展开更多
Objective:To determine the timing of first aid training in the medical school curriculum and the training method with the 8-hour first aid training given to the first-grade students of the faculty of medicine.Method:T...Objective:To determine the timing of first aid training in the medical school curriculum and the training method with the 8-hour first aid training given to the first-grade students of the faculty of medicine.Method:The study was conducted prospectively with 168 first year medical students at Faculty of Medicine,Maltepe University in October 2019.An 8-hour course plan consisting of theoretical and practical applications was prepared.Theoretical courses included cardiopulmonary resuscitation,basic life supports,epileptic seizures,heatstroke,aspiration,and drowning issues,while practical applications included cardiopulmonary resuscitation techniques,basic life support scenarios,Heimlich’s Maneuver and the coma position.Students were sent a link consisting of 17 questions created with Google forms at the beginning and the end of the course.Learned knowledge was measured with the posttest,and pre-and post-training results were compared.Results:A significant increase was found in the rate of correct answers compared to the pre-training period.Even the rate of correct post-test answers increased significantly in all questions;the increase in the questions related to the subjects supported by practical applications was more remarkable.It was found that more incorrect answers were given to questions about environmental injuries.Conclusions:It is possible to improve the public recognition of first aid,even with one day of theoretical and practical training.Thus,adding first aid practical courses to the first-year medical school curriculum and raising awareness at an earlier age will play an essential role in medical education.展开更多
<div style="text-align:justify;"> <strong>Background and Aim:</strong><span "=""> The only way to survive a sudden cardiac arrest is when the CPR is performed immediate...<div style="text-align:justify;"> <strong>Background and Aim:</strong><span "=""> The only way to survive a sudden cardiac arrest is when the CPR is performed immediately after the arrest. The focus of the present research study is to assess the effectiveness of a pre</span>- and post-simulation-based BLS training (BLS) and the outcome was<span "=""> measured on the basis of patient survival after the cardiac arrest. <b>Study Design</b><strong>:</strong> This pre- and post-training BLS/CPR training study enrolled all nursing staff, all hospital residents, internees, throughout the hospital in a simulation-based BLS training as per the standards of American Heart Association (AHA), to make them respond to immediate resuscitation and code blue activation during the cardiac arrest within the hospital premises including ED, wards, ICUs, MRI, CT and all miscellaneous areas. The providers completed self-efficacy questionnaires as per the AHA protocol before being certified and were evaluated during the emergency in hospital cardiopulmonary arrest. <b>Results: </b>296 nursing staff, 206 non-healthcare professionals, 143 residents, 212 internees, and 98 medical staff grade doctors completed the BLS training (total 955 hospital staff—providers) were graded for the response by pre- and post-training testing. In the course of pre</span>-BLS training period out of the 250 cardiac arrest patients, 68 patients (27.2%) had ROSC, while after instituting the BLS training period, 143 individuals (40.86%) of the 350 patients who had cardiac arrest had ROSC (p<span "=""> </span><<span "=""> </span>0.05<span "="">). <b>Conclusion: </b>A simulation-based CPR and BLS training curriculum greatly improves patient outcome by reducing mortality and morbidity with improved subjectivity, self-efficiency along with the objective assessment of the performance scores during acute cardiac arrest in Emergency Cardiovascular Care (ECC).</span> </div>展开更多
Purpose: According to guideline recommendations, chest compressions (CC) during cardiopulmonary resuscitation (CPR) should be performed at a rate of 100 - 120 per minute, with a CC fraction (CCF) of ≥80%. The aim of ...Purpose: According to guideline recommendations, chest compressions (CC) during cardiopulmonary resuscitation (CPR) should be performed at a rate of 100 - 120 per minute, with a CC fraction (CCF) of ≥80%. The aim of this work is to explore whether CC quality differs between advanced life support (ALS) and basic life support (BLS) performed by two rescuers. Method: Cardiopulmonary resuscitation was performed by two ambulance personnel in ten ALS and ten BLS manikin scenarios. Data from these scenarios were then compared with data on ten ALS cases from the clinical setting, all with non-shockable rhythms. Data from the first two 5-minute periods of CC were evaluated from impedance data (LIFEPAK 12 defibrillator monitors) using a modified Laerdal Skillmaster manikin. Quality parameters compared were: number of CC pauses (CCPs), total time of CC (%), number of CC given and CC rate/min. Results: During the first 5 minutes, the BLS manikin scenarios had the highest number of CCPs, 15 (14 - 16), compared with the ALS manikin scenario, 14 (13 - 15), and the clinical ALS cases, 12 (10 - 15). The BLS scenario also had the highest CCFs, 81% (77% - 85%), and number of CC, 450 (435 - 495), compared with the ALS manikin scenario, 75% (64% - 81%) and 400 (365 - 444) respectively, and the clinical ALS cases, 63% (50% - 74%) and 408 (306 - 489). The median rate of CC/min in the BLS scenario was 115 (110 - 120) compared with the ALS manikin scenario, 110 (106 - 115), and the clinical ALS cases, 130 (118 - 146). During the second 5-minute period, the BLS scenario had the highest number of CCPs, 16 (15 - 17), compared with 15 (14 - 16) for the ALS manikin scenario and 11 (11 - 12) for the clinical ALS cases. The CCF in the BLS setting was 79% (75% - 83%), and the number of CC 455 (430 - 480), compared with the ALS manikin scenario, 79% (74% - 84%) and 435 (395 - 480) respectively, and the clinical ALS cases, 71% (57% - 77%) and 388 (321 - 469) respectively. The median CC rate was 118 (113 - 124) for BLS, 111 (105 - 120) for ALS manikins and 123 (103 - 128) CC/min for clinical ALS cases. Conclusion: None of the groups being studied could deliver CC at a rate of 100 - 120 CC/min or a CCF of ≥80% over the whole 10-minute period in any of the resuscitation scenarios analyzed. However, BLS had the best compliance with CC quality recommendations according to the 2010 guidelines.展开更多
Heart attack is an extremely urgent medical condition which may occur at any time and can affect anybody and means the failure of the pump function of the heart and it represents the condition which brings to death. T...Heart attack is an extremely urgent medical condition which may occur at any time and can affect anybody and means the failure of the pump function of the heart and it represents the condition which brings to death. The aim of this study is the training, which is the acquisition of knowledge, abilities and skills as a result of education and practice in a certain discipline and this project has been created to make as accessible to all as possible the information about the identification and treatment of heart attack. However, the key objective has been involving only laic blind subjects in the trial and theoretical-practical course to support vital functions （BLS （basic life support））, to demonstrate that in a state of emergency, like a heart attack, even a subject affected by visual impairment, if properly trained, can be very helpful and can contribute to save a life. Fifteen partially sighted and sightless executors have participated in this study. In order to evaluate learning objectives of the course, participants have completed a pre-course test to examine these areas： cognitive and emotional, motivational, theoretical-practical; while, at the end of the course, participants have completed a comment card about the course. At the end of this study it can be seen that blind subjects do not present any type of limitation in the learning and in the execution of BLS manoeuvres after an appropriate training.展开更多
Background:Nurses are usually the first to identify and initiate cardiopulmonary resuscitation(CPR)for cardiac arrest in hospitalized patients.Consequently,the assessment of nurses’knowledge of CPR is very important ...Background:Nurses are usually the first to identify and initiate cardiopulmonary resuscitation(CPR)for cardiac arrest in hospitalized patients.Consequently,the assessment of nurses’knowledge of CPR is very important for improving training programs.Basic life support will be designed to achieve this goal.However,when received by adequately trained healthcare professionals,basic life support has been shown to reduce in-hospital deaths.Aims:The study aims to assess the knowledge and attitude of nurses when facing cardiac arrest regarding basic life support/cardiopulmonary resuscitation among nursing professionals and to design a proposed training program for nurses working in Al-Najaf Teaching Hospital in their training needs.Methodology:This descriptive and exploratory cross-sectional study will be conducted at Al-Najaf city in the southern region of Iraq in Al-Najaf teaching hospital to assess the nurses’knowledge concerning cardiopulmonary resuscitation.The methodological strategies for data collection will be using assessment questionnaire survey,participative observation,and questionnaires to evaluate the need to learn,the educational practices,and their methodology,allowing for grouping the results in nurses’expectations.Data collection will be from July to August of 2022 by the application of a semi-structured questionnaire developed by the authors,to be used toward 250 nurses who work at a hospital in Al Najaf city;those on sick leave or vacations will be excluded.The project was approved by the Committee of Ethics in Research from Al-Najaf health direction.Expected results:To know how CPR is performed and to check whether the actions taken differ from the knowledge and practice approved by nurses in their professional activities.Subsequently,to plan educational interventions associated with the practice if necessary.展开更多
Glycerol(GLY) aerobic oxidation in an aqueous solution is one of the most prospective pathways in biomass transformation, where the supported catalysts based on noble metals(mainly Au, Pd, Pt) are most commonly employ...Glycerol(GLY) aerobic oxidation in an aqueous solution is one of the most prospective pathways in biomass transformation, where the supported catalysts based on noble metals(mainly Au, Pd, Pt) are most commonly employed. Herein, Pt nanoparticles supported on rehydrated MgxAl1-hydrotalcite(denoted as re-MgxAl1-LDH-Pt) were prepared via impregnation-reduction method followed by an in situ rehydration process, which showed high activity and selectivity towards GLY oxidation to produce glyceric acid(GLYA) at room temperature. The metal-support interfacial structure and catalyst basicity were modulated by changing the Mg/Al molar ratio of the hydrotalcite precursor, and the optimal performance was achieved on re-Mg6Al1-LDH-Pt with a GLY conversion of 87.6% and a GLYA yield of 58.6%, which exceeded the traditional activated carbon and oxide supports. A combinative study on structural characterizations(XANES, CO-FTIR spectra, and benzoic acid titration) proves that a higher Mg/Al molar ratio promotes the formation of positively charged Ptd+species at metal-support interface, which accelerates bond cleavage of a-C–H and improves catalytic activity. Moreover, a higher Mg/Al molar ratio provides a stronger basicity of support that contributes to the oxidation of terminal-hydroxyl and thus enhances the selectivity of GLYA. This catalyst with tunable metal-support interaction shows prospective applications toward transformation of biomass-based polyols.展开更多
In the NEtwork MObility （NEMO） environment, mobile networks can form a nested structure. In nested mobile networks that use the NEMO Basic Support （NBS） protocol, pinball routing problems occur because packets are...In the NEtwork MObility （NEMO） environment, mobile networks can form a nested structure. In nested mobile networks that use the NEMO Basic Support （NBS） protocol, pinball routing problems occur because packets are routed to all the home agents of the mobile routers using nested tunneling. In addition, the nodes in the same mobile networks can communicate with each other regardless of Internet connectivity. However, the nodes in some mobile networks that are based on NBS cannot communicate when the network is disconnected from the Internet. In this paper, we propose a route optimization scheme to solve these problems. We introduce a new IPv6 routing header named ＂destination-information header＂ （DH）, which uses DH instead of routing header type 2 to optimize the route in the nested mobile network. The proposed scheme shows at least 30% better performance than ROTIO and similar performance improvement as DBU in inter-route optimization. With respect to intra-route optimization, the proposed scheme always uses the optimal routing path. In addition, the handover mechanism in ROAD＋ outperforms existing schemes and is less sensitive to network size than other existing schemes.展开更多
基金supported by the National Natural Science Foundation of China(21103173)
文摘Ni-Al hydrotalcite derived catalyst （Ni-Al2O3-HT） exhibited a narrow Ni particle-size distribution with an average particle size of 4.0 nm. Methanation of CO2 over this catalyst initiated at 225℃ and reached 82.5% CO2 conversion with 99.5% CH4 selectivity at 350℃, which was much better than its impregnated counterpart. Characterizations by means of CO2 microcalorimetry and 27 Al NMR indicated that large amount of strong basic sites existed on Ni-Al2O3-HT, originated from the formation of Ni-O-Al structure. The existence of strong basic sites facilitated the activation of CO2 and consequently promoted the activity. The combination of highly dispersed Ni with strong basic support led to its unique and high efficiency for this reaction. Keywords
文摘BACKGROUND:Basic life support(BLS),a key component of the chain of survival decreases the arrest-cardiopulmonary resuscitation interval and increases the rate of hospital discharge.The study aimed to explore the knowledge of and attitude towards basic life support(BLS)among medical/paramedical professionals.METHODS:An observational study was conducted by assessing response to self prepared questionnaire consisting of the demographic information of the medical/paramedical staff,their personnel experience/attitude and knowledge of BLS based on the 2005 BLS Guidelines of European Resuscitation Council.RESULTS:After excluding incomplete questionnaires,the data from 121 responders(27 clinical faculty members,21 dental and basic sciences faculty members,29 house officers and 44 nurses and health assistants)were analyzed.Only 9(7.4%)of the 121 responders answered≥11,53(43%)answered 7-10,and 58(48%)answered<7 of 15 questions correctly.The clinical faculty members,house officers and nurses/HA had a mean score of 7.4±3.15,7.37±2.02 and 6.63±2.16 respectively,while dental/basic sciences faculty members attained a least mean score of 4.52±2.13(P<0.001).Those who had received cardiopulmonary resuscitation(CPR)training within 5 years obtained a highest mean score of 8.62±2.49,whereas those who had the training more than 5 years back or no training obtained a mean score of 5.54±2.38 and 6.1±2.29 respectively(P=0.001).Those who were involved in resuscitation frequently had a higher median score of 8 in comparison to those who were seldom involved or not involved at all(P<0.001).CONCLUSIONS:The average health personnel in our hospital lack adequate knowledge in CPR/BLS.Training and experience can enhance knowledge of CPR of these personnel.Thus standard of CPR/BLS training and assessment are recommended at our hospital.
文摘BACKGROUND:Healthcare professionals are expected to have knowledge of current basic and advanced cardiac life support(BLS/ACLS) guidelines to revive unresponsive patients.METHODS:Across-sectional study was conducted to evaluate the current practices and knowledge of BLS/ACLS principles among healthcare professionals of North-Kerala using pretested self-administered structured questionnaire.Answers were validated in accordance with American Heart Association's BLS/ACLS teaching manual and the results were analysed.RESULTS:Among 461 healthcare professionals,141(30.6%) were practicing physicians,268(58.1%) were nurses and 52(11.3%) supporting staff.The maximum achievable score was 20(BLS15/ACLS 5).The mean score amongst all healthcare professionals was 8.9±4.7.The mean score among physicians,nurses and support staff were 8.6±3.4,9±3.6 and 9±3.3 respectively.The majority of healthcare professionals scored <50%(237,51.4%);204(44.3%) scored 51%-80%and 20(4.34%)scored >80%.Mean scores decreased with age,male sex and across occupation.Nurses who underwent BLS/ACLS training previously had significantly higher mean scores(10.2±3.4) than untrained(8.2±3.6,P=0.001).Physicians with <5 years experience(P=0.002) and nurses in the private sector(P=0.003)had significantly higher scores.One hundred and sixty three(35.3%) healthcare professionals knew the correct airway opening manoeuvres like head tilt,chin lift and jaw thrust.Only 54(11.7%) respondents were aware that atropine is not used in ACLS for cardiac arrest resuscitation and 79(17.1%) correctly opted ventricular fibrillation and pulseless ventricular tachycardia as shockable rhythms.The majority of healthcare professionals(356,77.2%) suggested that BLS/ACLS be included in academic curriculum.CONCLUSION:Inadequate knowledge of BLS/ACLS principles amongst healthcare professionals,especially physicians,illuminate lacunae in existing training systems and merit urgent redressal.
文摘BACKGROUND:There are several reasons why resuscitation measures may lead to inferior results:difficulties in team building,delayed realization of the emergency and interruption of chest compression.This study investigated the outcome of a new form of in-hospital cardiopulmonary resuscitation(CPR) training with special focus on changes in self-assurance of potential helpers when faced with emergency situations.METHODS:Following a 12-month period of CPR training,questionnaires were distributed to participants and non-participants.Those non-participants who intended to undergo the training at a later date served as control group.RESULTS:The study showed that participants experienced a significant improvement in selfassurance,compared with their remembered self-assurance before the training.Their self-assurance also was significantly greater than that of the control group of non-participants.CONCLUSION:Short lessons in CPR have an impact on the self-assurance of medical and non-medical personnel.
文摘BACKGROUND: The inclusion of cardiopulmonary resuscitation(CPR) in formal education has been a useful approach to providing basic life support(BLS) services. However, because not all students have been able to learn directly from certified instructors, we studied the educational efficacy of the use of peer-assisted learning(PAL) to train high-school students to perform BLS services.METHODS: This study consisted of 187 high-school students: 68 participants served as a control group and received a 1-hour BLS training from a school nurse, and 119 were included in a PAL group and received a 1-hour CPR training from a PAL leader. Participants' BLS training was preceded by the completion of questionnaires regarding their background. Three months after the training, the participants were asked to respond to questionnaires about their willingness to perform CPR on bystander CPR and their retention of knowledge of BLS.RESULTS: We found no statistically significant difference between the control and PAL groups in their willingness to perform CPR on bystanders(control: 55.2%, PAL: 64.7%, P=0.202). The PAL group was not significantly different from the control group(control: 60.78±39.77, PAL: 61.76±17.80, P=0.848) in retention of knowledge about BLS services.CONCLUSION: In educating high school students about BLS, there was no significant difference between PAL and traditional education in increasing the willingness to provide CPR to bystanders or the ability to retain knowledge about BLS.
基金supported by a grant from the National Natural Science Foundation of China(NSFC81271656,YL)
文摘BACKGROUND: The quality of chest compressions can be significantly improved after training of rescuers according to the latest national guidelines of China. However, rescuers may be unable to maintain adequate compression or ventilation throughout a response of average emergency medical services because of increased rescuer fatigue. In the present study, we evaluated the performance of cardiopulmonary resuscitation(CPR) in training of military medical university students during a prolonged basic life support(BLS).METHODS: A 3-hour BLS training was given to 120 military medical university students. Six months after the training, 115 students performed single rescuer BLS on a manikin for 8 minutes. The qualities of chest compressions as well as ventilations were assessed.RESULTS: The average compression depth and rate were 53.7±5.3 mm and 135.1±15.7 compressions per minute respectively. The proportion of chest compressions with appropriate depth was 71.7%±28.4%. The average ventilation volume was 847.2±260.4 m L and the proportion of students with adequate ventilation was 63.5%. Compared with male students, significantly lower compression depth(46.7±4.8 vs. 54.6±4.8 mm, P<0.001) and adequate compression rate(35.5%±26.5% vs. 76.1%±25.1%, P<0.001) were observed in female students.CONCLUSIONS: CPR was found to be related to gender, body weight, and body mass index of students in this study. The quality of chest compressions was well maintained in male students during 8 minutes of conventional CPR but declined rapidly in female students after 2 minutes according to the latest national guidelines. Physical fitness and rescuer fatigue did not affect the quality of ventilation.
文摘BACKGROUND: Life-threatening emergencies can occur at anytime, at anywhere and in anyone. Effective management of an emergency situation in the dental office is ultimately the dentist's responsibility. The lack of training and inability to cope with medical emergencies can lead to tragic consequences and sometimes legal complications. Therefore, health professionals including dentists must be well prepared to deal with medical emergencies. This study was undertaken to assess the knowledge about and attitude towards basic life support(BLS) among dental interns and postgraduate students in Bangalore city, India.METHODS: A cross sectional survey was conducted among dental interns and postgraduate students from May 2014 to June 2014 since few studies have been conducted in Bangalore city. A questionnaire with 17 questions regarding the knowledge about and attitude towards BLS was distributed to 202 study participants.RESULTS: The data analyzed using the Chi-square test showed that dental interns and postgraduate students had average knowledge about BLS. In the 201 participants, 121(59.9%) had a positive attitude and 81(40.1%) had a negative attitude towards BLS.CONCLUSIONS: Cardiopulmonary resuscitation should be considered as part of the dental curriculum. Workshops on a regular basis should be focused on skills of cardiopulmonary resuscitation for dental students.
文摘BACKGROUND: This cross-sectional study aimed to assess the knowledge, attitude and anxiety pertaining to basic life support(BLS) and medical emergencies among interns in dental colleges of Mangalore city, Karnataka, India.METHODS: The study subjects comprised of interns who volunteered from the four dental colleges. The knowledge and attitude of interns were assessed using a 30-item questionnaire prepared based on the Basic Life Support Manual from American Heart Association and the anxiety of interns pertaining to BLS and medical emergencies were assessed using a State-Trait Anxiety Inventory(STAI) Questionnaire. Chi-square test was performed on SPSS 21.0(IBM Statistics, 2012) to determine statistically signifi cant differences(P<0.05) between assessed knowledge and anxiety.RESULTS: Out of 183 interns, 39.89% had below average knowledge. A total of 123(67.21%) reported unavailability of professional training. The majority(180, 98.36%) felt the urgent need of training in basic life support procedures. Assessment of stress showed a total of 27.1% participants to be above highstress level. Comparison of assessed knowledge and stress was found to be insignifi cant(P=0.983).CONCLUSION: There was an evident lack of knowledge pertaining to the management of medical emergencies among the interns. As oral health care providers moving out to the society, a focus should be placed on the training of dental interns with respect to Basic Life Support procedures.
文摘Objective:To determine the timing of first aid training in the medical school curriculum and the training method with the 8-hour first aid training given to the first-grade students of the faculty of medicine.Method:The study was conducted prospectively with 168 first year medical students at Faculty of Medicine,Maltepe University in October 2019.An 8-hour course plan consisting of theoretical and practical applications was prepared.Theoretical courses included cardiopulmonary resuscitation,basic life supports,epileptic seizures,heatstroke,aspiration,and drowning issues,while practical applications included cardiopulmonary resuscitation techniques,basic life support scenarios,Heimlich’s Maneuver and the coma position.Students were sent a link consisting of 17 questions created with Google forms at the beginning and the end of the course.Learned knowledge was measured with the posttest,and pre-and post-training results were compared.Results:A significant increase was found in the rate of correct answers compared to the pre-training period.Even the rate of correct post-test answers increased significantly in all questions;the increase in the questions related to the subjects supported by practical applications was more remarkable.It was found that more incorrect answers were given to questions about environmental injuries.Conclusions:It is possible to improve the public recognition of first aid,even with one day of theoretical and practical training.Thus,adding first aid practical courses to the first-year medical school curriculum and raising awareness at an earlier age will play an essential role in medical education.
文摘<div style="text-align:justify;"> <strong>Background and Aim:</strong><span "=""> The only way to survive a sudden cardiac arrest is when the CPR is performed immediately after the arrest. The focus of the present research study is to assess the effectiveness of a pre</span>- and post-simulation-based BLS training (BLS) and the outcome was<span "=""> measured on the basis of patient survival after the cardiac arrest. <b>Study Design</b><strong>:</strong> This pre- and post-training BLS/CPR training study enrolled all nursing staff, all hospital residents, internees, throughout the hospital in a simulation-based BLS training as per the standards of American Heart Association (AHA), to make them respond to immediate resuscitation and code blue activation during the cardiac arrest within the hospital premises including ED, wards, ICUs, MRI, CT and all miscellaneous areas. The providers completed self-efficacy questionnaires as per the AHA protocol before being certified and were evaluated during the emergency in hospital cardiopulmonary arrest. <b>Results: </b>296 nursing staff, 206 non-healthcare professionals, 143 residents, 212 internees, and 98 medical staff grade doctors completed the BLS training (total 955 hospital staff—providers) were graded for the response by pre- and post-training testing. In the course of pre</span>-BLS training period out of the 250 cardiac arrest patients, 68 patients (27.2%) had ROSC, while after instituting the BLS training period, 143 individuals (40.86%) of the 350 patients who had cardiac arrest had ROSC (p<span "=""> </span><<span "=""> </span>0.05<span "="">). <b>Conclusion: </b>A simulation-based CPR and BLS training curriculum greatly improves patient outcome by reducing mortality and morbidity with improved subjectivity, self-efficiency along with the objective assessment of the performance scores during acute cardiac arrest in Emergency Cardiovascular Care (ECC).</span> </div>
文摘Purpose: According to guideline recommendations, chest compressions (CC) during cardiopulmonary resuscitation (CPR) should be performed at a rate of 100 - 120 per minute, with a CC fraction (CCF) of ≥80%. The aim of this work is to explore whether CC quality differs between advanced life support (ALS) and basic life support (BLS) performed by two rescuers. Method: Cardiopulmonary resuscitation was performed by two ambulance personnel in ten ALS and ten BLS manikin scenarios. Data from these scenarios were then compared with data on ten ALS cases from the clinical setting, all with non-shockable rhythms. Data from the first two 5-minute periods of CC were evaluated from impedance data (LIFEPAK 12 defibrillator monitors) using a modified Laerdal Skillmaster manikin. Quality parameters compared were: number of CC pauses (CCPs), total time of CC (%), number of CC given and CC rate/min. Results: During the first 5 minutes, the BLS manikin scenarios had the highest number of CCPs, 15 (14 - 16), compared with the ALS manikin scenario, 14 (13 - 15), and the clinical ALS cases, 12 (10 - 15). The BLS scenario also had the highest CCFs, 81% (77% - 85%), and number of CC, 450 (435 - 495), compared with the ALS manikin scenario, 75% (64% - 81%) and 400 (365 - 444) respectively, and the clinical ALS cases, 63% (50% - 74%) and 408 (306 - 489). The median rate of CC/min in the BLS scenario was 115 (110 - 120) compared with the ALS manikin scenario, 110 (106 - 115), and the clinical ALS cases, 130 (118 - 146). During the second 5-minute period, the BLS scenario had the highest number of CCPs, 16 (15 - 17), compared with 15 (14 - 16) for the ALS manikin scenario and 11 (11 - 12) for the clinical ALS cases. The CCF in the BLS setting was 79% (75% - 83%), and the number of CC 455 (430 - 480), compared with the ALS manikin scenario, 79% (74% - 84%) and 435 (395 - 480) respectively, and the clinical ALS cases, 71% (57% - 77%) and 388 (321 - 469) respectively. The median CC rate was 118 (113 - 124) for BLS, 111 (105 - 120) for ALS manikins and 123 (103 - 128) CC/min for clinical ALS cases. Conclusion: None of the groups being studied could deliver CC at a rate of 100 - 120 CC/min or a CCF of ≥80% over the whole 10-minute period in any of the resuscitation scenarios analyzed. However, BLS had the best compliance with CC quality recommendations according to the 2010 guidelines.
文摘Heart attack is an extremely urgent medical condition which may occur at any time and can affect anybody and means the failure of the pump function of the heart and it represents the condition which brings to death. The aim of this study is the training, which is the acquisition of knowledge, abilities and skills as a result of education and practice in a certain discipline and this project has been created to make as accessible to all as possible the information about the identification and treatment of heart attack. However, the key objective has been involving only laic blind subjects in the trial and theoretical-practical course to support vital functions （BLS （basic life support））, to demonstrate that in a state of emergency, like a heart attack, even a subject affected by visual impairment, if properly trained, can be very helpful and can contribute to save a life. Fifteen partially sighted and sightless executors have participated in this study. In order to evaluate learning objectives of the course, participants have completed a pre-course test to examine these areas： cognitive and emotional, motivational, theoretical-practical; while, at the end of the course, participants have completed a comment card about the course. At the end of this study it can be seen that blind subjects do not present any type of limitation in the learning and in the execution of BLS manoeuvres after an appropriate training.
文摘Background:Nurses are usually the first to identify and initiate cardiopulmonary resuscitation(CPR)for cardiac arrest in hospitalized patients.Consequently,the assessment of nurses’knowledge of CPR is very important for improving training programs.Basic life support will be designed to achieve this goal.However,when received by adequately trained healthcare professionals,basic life support has been shown to reduce in-hospital deaths.Aims:The study aims to assess the knowledge and attitude of nurses when facing cardiac arrest regarding basic life support/cardiopulmonary resuscitation among nursing professionals and to design a proposed training program for nurses working in Al-Najaf Teaching Hospital in their training needs.Methodology:This descriptive and exploratory cross-sectional study will be conducted at Al-Najaf city in the southern region of Iraq in Al-Najaf teaching hospital to assess the nurses’knowledge concerning cardiopulmonary resuscitation.The methodological strategies for data collection will be using assessment questionnaire survey,participative observation,and questionnaires to evaluate the need to learn,the educational practices,and their methodology,allowing for grouping the results in nurses’expectations.Data collection will be from July to August of 2022 by the application of a semi-structured questionnaire developed by the authors,to be used toward 250 nurses who work at a hospital in Al Najaf city;those on sick leave or vacations will be excluded.The project was approved by the Committee of Ethics in Research from Al-Najaf health direction.Expected results:To know how CPR is performed and to check whether the actions taken differ from the knowledge and practice approved by nurses in their professional activities.Subsequently,to plan educational interventions associated with the practice if necessary.
基金supported by the National Natural Science Foundation of China (21871021 and 21521005)the National Key Research and Development Program (2017YFA0206804)the Fundamental Research Funds for the Central Universities (buctylkxj01 and XK1802-6)
文摘Glycerol(GLY) aerobic oxidation in an aqueous solution is one of the most prospective pathways in biomass transformation, where the supported catalysts based on noble metals(mainly Au, Pd, Pt) are most commonly employed. Herein, Pt nanoparticles supported on rehydrated MgxAl1-hydrotalcite(denoted as re-MgxAl1-LDH-Pt) were prepared via impregnation-reduction method followed by an in situ rehydration process, which showed high activity and selectivity towards GLY oxidation to produce glyceric acid(GLYA) at room temperature. The metal-support interfacial structure and catalyst basicity were modulated by changing the Mg/Al molar ratio of the hydrotalcite precursor, and the optimal performance was achieved on re-Mg6Al1-LDH-Pt with a GLY conversion of 87.6% and a GLYA yield of 58.6%, which exceeded the traditional activated carbon and oxide supports. A combinative study on structural characterizations(XANES, CO-FTIR spectra, and benzoic acid titration) proves that a higher Mg/Al molar ratio promotes the formation of positively charged Ptd+species at metal-support interface, which accelerates bond cleavage of a-C–H and improves catalytic activity. Moreover, a higher Mg/Al molar ratio provides a stronger basicity of support that contributes to the oxidation of terminal-hydroxyl and thus enhances the selectivity of GLYA. This catalyst with tunable metal-support interaction shows prospective applications toward transformation of biomass-based polyols.
基金supported by MKE,Korea,under ITRC NIPA-2009-(C1090-0902-0046)by MEST,Korea under WCU Program supervised by the KOSEF(No.R31-2008-000-10062-0).
文摘In the NEtwork MObility （NEMO） environment, mobile networks can form a nested structure. In nested mobile networks that use the NEMO Basic Support （NBS） protocol, pinball routing problems occur because packets are routed to all the home agents of the mobile routers using nested tunneling. In addition, the nodes in the same mobile networks can communicate with each other regardless of Internet connectivity. However, the nodes in some mobile networks that are based on NBS cannot communicate when the network is disconnected from the Internet. In this paper, we propose a route optimization scheme to solve these problems. We introduce a new IPv6 routing header named ＂destination-information header＂ （DH）, which uses DH instead of routing header type 2 to optimize the route in the nested mobile network. The proposed scheme shows at least 30% better performance than ROTIO and similar performance improvement as DBU in inter-route optimization. With respect to intra-route optimization, the proposed scheme always uses the optimal routing path. In addition, the handover mechanism in ROAD＋ outperforms existing schemes and is less sensitive to network size than other existing schemes.
