Human cadaver dissection remains a core and preferred method of anatomical instruction at most low- and middle-income health professional training institutions. Dissection, which is both traumatic and stressful, sets ...Human cadaver dissection remains a core and preferred method of anatomical instruction at most low- and middle-income health professional training institutions. Dissection, which is both traumatic and stressful, sets the tone of the students’ responses to later and or similar stressful learning opportunities like the post-mortems or care for terminally ill patients. Partial least squares structural equation modelling was used to determine the effect of the students’: personality, perception of the learning environment, learning approach, and effect of the environment on the student, on undergraduate health professional student’s activity in the human cadaver dissection room. This was a secondary analysis of previously collected data from a cross sectional survey of undergraduate health professional students. We found that personality type and perception of the environment had a positive effect on dissection room activity. Approach to learning and being affected by the dissection room experience (impact), had a negative effect on dissection room activity. All the above effects on dissection room activity were not significant. This study showed that personality, perception of the learning environment, learning approach and effect of the environment on the student, had effects on undergraduate health professional student’s activity in the human cadaver dissection room. The modelled effects are opportunities for educational interventions aimed at increasing student activity in the dissection room.展开更多
Objective:Comparative studies of median sternotomy and partial upper sternotomy in total arch replacement for type A aortic dissection are rare,and the safety and benefits of partial upper sternotomy need further eval...Objective:Comparative studies of median sternotomy and partial upper sternotomy in total arch replacement for type A aortic dissection are rare,and the safety and benefits of partial upper sternotomy need further evaluation.This study aimed to explore the effectiveness and prognosis of partial upper sternotomy in total arch replacement among patients with type A aortic dissection.Methods:This is a retrospective study of patients who underwent total arch replacement for type A aortic dissection at the First Medical Center of Chinese People’s Liberation Army General Hospital between January 2016 and December 2019.They were grouped into the median sternotomy and partial upper sternotomy groups according to the different treatment methodologies.The intra-operative and prognostic indicators were compared between both groups.Results:Forty-nine patients were included:31 in the median sternotomy group and 18 in the partial upper sternotomy group.The partial upper sternotomy group had a shorter incision((9.0±0.8)cm vs.(25.5±1.3)cm,P=0.02)and smaller postoperative total drainage volume(885mL vs.1,820mL,P=0.03)than the median sternotomy group.The differences between the 2 groups with respect to other intra-operative indicators such as operation duration,cardiopulmonary bypass duration,aortic occlusion duration,hypothermic circulatory arrest duration,and intra-operative blood loss,and prognostic indicators such as red blood cell infusion,ventilator aid duration,cardiac intensive care unit stay,postoperative hospital stay,and postoperative complications were not significantly different(all P>0.05).Conclusions:The utilization of partial upper sternotomy in patients with type A aortic dissection resulted in a smaller incision and more aesthetically pleasing scar,along with reduced drainage volume compared to median sternotomy.展开更多
Purpose: Impaired hatching is associated with implantation failure following in vitro fertilization (IVF). Thickening or hardening of the zona pellucida (ZP) has been proposed as a factor in this impairment. We examin...Purpose: Impaired hatching is associated with implantation failure following in vitro fertilization (IVF). Thickening or hardening of the zona pellucida (ZP) has been proposed as a factor in this impairment. We examined whether selective assisted hatching (AH) is beneficial with embryos having a thick ZP. Methods: This prospective, randomized controlled study was performed in the IVF unit of an obstetrics and gynecology department in a university-affiliated hospital. Only patients undergoing IVF and having a ZP thickness of ≥17 μm measured in all their embryos were included. In the intervention group, AH was applied to all embryos, before their transfer. In the control group, embryos were transferred without AH. Implantation, clinical pregnancy and live birth rates were the study endpoints. Results: Both study arms were comparable in most baseline parameters. The two groups did not differ in implantation rates (14.1% control vs. 8.92% intervention, odds ratio (OR) = 0.5974, 95% confidence interval (CI) 0.325 - 1.1), clinical pregnancy rates (36.7% vs. 25.8%, OR = 0.6025, 95% CI 0.274 - 1.325), or live birth rates (25% vs. 18.9%, OR = 0.7021, 95% CI 0.291 - 1.691). Conclusions: Selecting embryos for AH by their ZP thickness as a sole parameter was not found to be beneficial and to improve IVF outcome.展开更多
文摘Human cadaver dissection remains a core and preferred method of anatomical instruction at most low- and middle-income health professional training institutions. Dissection, which is both traumatic and stressful, sets the tone of the students’ responses to later and or similar stressful learning opportunities like the post-mortems or care for terminally ill patients. Partial least squares structural equation modelling was used to determine the effect of the students’: personality, perception of the learning environment, learning approach, and effect of the environment on the student, on undergraduate health professional student’s activity in the human cadaver dissection room. This was a secondary analysis of previously collected data from a cross sectional survey of undergraduate health professional students. We found that personality type and perception of the environment had a positive effect on dissection room activity. Approach to learning and being affected by the dissection room experience (impact), had a negative effect on dissection room activity. All the above effects on dissection room activity were not significant. This study showed that personality, perception of the learning environment, learning approach and effect of the environment on the student, had effects on undergraduate health professional student’s activity in the human cadaver dissection room. The modelled effects are opportunities for educational interventions aimed at increasing student activity in the dissection room.
文摘Objective:Comparative studies of median sternotomy and partial upper sternotomy in total arch replacement for type A aortic dissection are rare,and the safety and benefits of partial upper sternotomy need further evaluation.This study aimed to explore the effectiveness and prognosis of partial upper sternotomy in total arch replacement among patients with type A aortic dissection.Methods:This is a retrospective study of patients who underwent total arch replacement for type A aortic dissection at the First Medical Center of Chinese People’s Liberation Army General Hospital between January 2016 and December 2019.They were grouped into the median sternotomy and partial upper sternotomy groups according to the different treatment methodologies.The intra-operative and prognostic indicators were compared between both groups.Results:Forty-nine patients were included:31 in the median sternotomy group and 18 in the partial upper sternotomy group.The partial upper sternotomy group had a shorter incision((9.0±0.8)cm vs.(25.5±1.3)cm,P=0.02)and smaller postoperative total drainage volume(885mL vs.1,820mL,P=0.03)than the median sternotomy group.The differences between the 2 groups with respect to other intra-operative indicators such as operation duration,cardiopulmonary bypass duration,aortic occlusion duration,hypothermic circulatory arrest duration,and intra-operative blood loss,and prognostic indicators such as red blood cell infusion,ventilator aid duration,cardiac intensive care unit stay,postoperative hospital stay,and postoperative complications were not significantly different(all P>0.05).Conclusions:The utilization of partial upper sternotomy in patients with type A aortic dissection resulted in a smaller incision and more aesthetically pleasing scar,along with reduced drainage volume compared to median sternotomy.
文摘Purpose: Impaired hatching is associated with implantation failure following in vitro fertilization (IVF). Thickening or hardening of the zona pellucida (ZP) has been proposed as a factor in this impairment. We examined whether selective assisted hatching (AH) is beneficial with embryos having a thick ZP. Methods: This prospective, randomized controlled study was performed in the IVF unit of an obstetrics and gynecology department in a university-affiliated hospital. Only patients undergoing IVF and having a ZP thickness of ≥17 μm measured in all their embryos were included. In the intervention group, AH was applied to all embryos, before their transfer. In the control group, embryos were transferred without AH. Implantation, clinical pregnancy and live birth rates were the study endpoints. Results: Both study arms were comparable in most baseline parameters. The two groups did not differ in implantation rates (14.1% control vs. 8.92% intervention, odds ratio (OR) = 0.5974, 95% confidence interval (CI) 0.325 - 1.1), clinical pregnancy rates (36.7% vs. 25.8%, OR = 0.6025, 95% CI 0.274 - 1.325), or live birth rates (25% vs. 18.9%, OR = 0.7021, 95% CI 0.291 - 1.691). Conclusions: Selecting embryos for AH by their ZP thickness as a sole parameter was not found to be beneficial and to improve IVF outcome.
