Bradykinin(BK)is an active component of the kallikrein-kinin system that has been shown to have cardioprotective and neuroprotective effects.We previously showed that BK postconditioning strongly protects rat hippocam...Bradykinin(BK)is an active component of the kallikrein-kinin system that has been shown to have cardioprotective and neuroprotective effects.We previously showed that BK postconditioning strongly protects rat hippocampal neurons upon restoration of spontaneous circulation(ROSC)after cardiac arrest.However,the precise mechanism underlying this process remains poorly understood.In this study,we treated a rat model of ROSC after cardiac arrest(induced by asphyxiation)with 150μg/kg BK via intraperitoneal injection 48 hours after ROSC following cardiac arrest.We found that BK postconditioning effectively promoted the recovery of rat neurological function after ROSC following cardiac arrest,increased the amount of autophagosomes in the hippocampal tissue,inhibited neuronal cell apoptosis,up-regulated the expression of autophagy-related proteins LC3 and NBR1 and down-regulated p62,inhibited the expression of the brain injury marker S100βand apoptosis-related protein caspase-3,and affected the expression of adenosine monophosphate-activated protein kinase/mechanistic target of rapamycin pathway-related proteins.Adenosine monophosphate-activated protein kinase inhibitor compound C clearly inhibited BK-mediated activation of autophagy in rats after ROSC following cardiac arrest,which aggravated the injury caused by ROSC.The mechanistic target of rapamycin inhibitor rapamycin enhanced the protective effects of BK by stimulating autophagy.Our findings suggest that BK postconditioning protects against injury caused by ROSC through activating the adenosine monophosphate-activated protein kinase/mechanistic target of the rapamycin pathway.展开更多
目的基于情景的高仿真模拟方法(下面统称情景模拟)指挥团队进行心肺复苏(CPR)在急诊住院医师规范化培训二阶段考核中的应用效果评价。方法选择参加2019、2020年北京市急诊住院医师规范化培训二阶段考核(急诊住院医师培训满5年)的191名...目的基于情景的高仿真模拟方法(下面统称情景模拟)指挥团队进行心肺复苏(CPR)在急诊住院医师规范化培训二阶段考核中的应用效果评价。方法选择参加2019、2020年北京市急诊住院医师规范化培训二阶段考核(急诊住院医师培训满5年)的191名急诊科住院医师为研究对象,二阶段考核内容其中一项为情景模拟下考生指挥团队进行CPR。根据研究对象的调查问卷,将其分为临床工作中未曾独立组织CPR抢救组(n=63)和曾经独立组织CPR抢救组(n=128);同时还分为既往未曾接受过情景模拟培训组(n=57)和曾经接受过情景模拟培训组(n=134)。分别比较两组心脏骤停(cardiac arrest,CA)之前的病情判断、CA的抢救措施、气道管理、胸外按压(按压深度、按压是否回弹、按压频率)、不间断按压、电除颤(能量选择、除颤位置、除颤时机)、自主呼吸循环恢复(return of spontaneous circulation,ROSC)后的处理、人文关怀、团队合作(领导力)和此项考核的总成绩。结果未曾独立组织CPR抢救组CA之前的病情判断、CA的抢救措施、间断按压、除颤时机、ROSC后的处理、人文关怀、团队合作(领导力)及考核总成绩均显著低于曾经独立CPR抢救组,差异有统计学意义(P<0.05);而两组气道管理、胸外按压(深度、频率、回弹)、电除颤(能量选择、除颤位置)比较差异无统计学意义(P>0.05)。未曾接受培训组CA之前的病情判断、CA的抢救措施、不间断按压、除颤时机、ROSC后的处理、人文关怀、团队合作(领导力)及总成绩均显著低于曾经接受培训组,差异有统计学意义(P<0.05);而两组在气道管理、胸外按压(深度、频率、回弹)、电除颤(能量选择、除颤位置)上差异无统计学意义(P>0.05)。结论应用情景模拟方法作为急诊住院医师规范化培训二阶段考核方式,可真实地反映出急诊高年资住院医师的临床急救能力与核心能力。开展基于情景的高仿真模拟培训,有利于提升规培医师抢救时的综合能力。展开更多
目的建立心肺复苏自主循环恢复(CPRROSC)昏迷病人预后的评价方法,提高该类病人预后的预测能力。方法分析文献,找出心肺复苏自主循环恢复昏迷病人预后的相关因素,赋予每个因素一定分值,建立CPRROSC预后评分法。用该评分法回顾性评价115例...目的建立心肺复苏自主循环恢复(CPRROSC)昏迷病人预后的评价方法,提高该类病人预后的预测能力。方法分析文献,找出心肺复苏自主循环恢复昏迷病人预后的相关因素,赋予每个因素一定分值,建立CPRROSC预后评分法。用该评分法回顾性评价115例CPRROSC住院病人的预后,比较不同预后病人CPRROSC预后评分的差异,计算其对两种严重不良预后(死亡或植物状态)与其他类型预后区别能力的ROC曲线下面积。结果5种不同预后(正常、轻度神经功能障碍、重度神经功能障碍、植物状态和死亡)病人CPRROSC预后评分比较,总的差异有统计学意义(F=65.91,P=0.000)。其中正常组与神经功能轻度异常组、死亡组与植物状态组之间差异无统计学意义(3.52±3.03 vs 4.88±3.52,P=0.318;15.47±3.31 vs 14.04±3.84,P=0.108);其他各组之间相互比较差异均有统计学意义(植物状态组vs重度神经功能异常组为14.04±3.84 vs 10.70±3.30,P=0.011;其他各组之间比较,均为P=0.000)。CPRROSC预后评分在8分以下对预后良好(正常或神经功能轻度异常)的病人区别能力最强;13分以上对预后严重不良的病人区别能力最强。CPRROSC预后评分对严重不良预后预测的ROC曲线下面积为0.950。结论CPRROSC预后评分对病人严重不良预后具有较高预测和区别能力,可以作为心肺复苏后昏迷病人最终预后预测的评价工具。展开更多
基金supported by the Fujian Provincial Health Technology Project of China,No.2018-CX-16Fujian Provincial Hospital Flint Fund Project,No.2020HSJJ17(both to SRL).
文摘Bradykinin(BK)is an active component of the kallikrein-kinin system that has been shown to have cardioprotective and neuroprotective effects.We previously showed that BK postconditioning strongly protects rat hippocampal neurons upon restoration of spontaneous circulation(ROSC)after cardiac arrest.However,the precise mechanism underlying this process remains poorly understood.In this study,we treated a rat model of ROSC after cardiac arrest(induced by asphyxiation)with 150μg/kg BK via intraperitoneal injection 48 hours after ROSC following cardiac arrest.We found that BK postconditioning effectively promoted the recovery of rat neurological function after ROSC following cardiac arrest,increased the amount of autophagosomes in the hippocampal tissue,inhibited neuronal cell apoptosis,up-regulated the expression of autophagy-related proteins LC3 and NBR1 and down-regulated p62,inhibited the expression of the brain injury marker S100βand apoptosis-related protein caspase-3,and affected the expression of adenosine monophosphate-activated protein kinase/mechanistic target of rapamycin pathway-related proteins.Adenosine monophosphate-activated protein kinase inhibitor compound C clearly inhibited BK-mediated activation of autophagy in rats after ROSC following cardiac arrest,which aggravated the injury caused by ROSC.The mechanistic target of rapamycin inhibitor rapamycin enhanced the protective effects of BK by stimulating autophagy.Our findings suggest that BK postconditioning protects against injury caused by ROSC through activating the adenosine monophosphate-activated protein kinase/mechanistic target of the rapamycin pathway.
文摘目的基于情景的高仿真模拟方法(下面统称情景模拟)指挥团队进行心肺复苏(CPR)在急诊住院医师规范化培训二阶段考核中的应用效果评价。方法选择参加2019、2020年北京市急诊住院医师规范化培训二阶段考核(急诊住院医师培训满5年)的191名急诊科住院医师为研究对象,二阶段考核内容其中一项为情景模拟下考生指挥团队进行CPR。根据研究对象的调查问卷,将其分为临床工作中未曾独立组织CPR抢救组(n=63)和曾经独立组织CPR抢救组(n=128);同时还分为既往未曾接受过情景模拟培训组(n=57)和曾经接受过情景模拟培训组(n=134)。分别比较两组心脏骤停(cardiac arrest,CA)之前的病情判断、CA的抢救措施、气道管理、胸外按压(按压深度、按压是否回弹、按压频率)、不间断按压、电除颤(能量选择、除颤位置、除颤时机)、自主呼吸循环恢复(return of spontaneous circulation,ROSC)后的处理、人文关怀、团队合作(领导力)和此项考核的总成绩。结果未曾独立组织CPR抢救组CA之前的病情判断、CA的抢救措施、间断按压、除颤时机、ROSC后的处理、人文关怀、团队合作(领导力)及考核总成绩均显著低于曾经独立CPR抢救组,差异有统计学意义(P<0.05);而两组气道管理、胸外按压(深度、频率、回弹)、电除颤(能量选择、除颤位置)比较差异无统计学意义(P>0.05)。未曾接受培训组CA之前的病情判断、CA的抢救措施、不间断按压、除颤时机、ROSC后的处理、人文关怀、团队合作(领导力)及总成绩均显著低于曾经接受培训组,差异有统计学意义(P<0.05);而两组在气道管理、胸外按压(深度、频率、回弹)、电除颤(能量选择、除颤位置)上差异无统计学意义(P>0.05)。结论应用情景模拟方法作为急诊住院医师规范化培训二阶段考核方式,可真实地反映出急诊高年资住院医师的临床急救能力与核心能力。开展基于情景的高仿真模拟培训,有利于提升规培医师抢救时的综合能力。
文摘目的建立心肺复苏自主循环恢复(CPRROSC)昏迷病人预后的评价方法,提高该类病人预后的预测能力。方法分析文献,找出心肺复苏自主循环恢复昏迷病人预后的相关因素,赋予每个因素一定分值,建立CPRROSC预后评分法。用该评分法回顾性评价115例CPRROSC住院病人的预后,比较不同预后病人CPRROSC预后评分的差异,计算其对两种严重不良预后(死亡或植物状态)与其他类型预后区别能力的ROC曲线下面积。结果5种不同预后(正常、轻度神经功能障碍、重度神经功能障碍、植物状态和死亡)病人CPRROSC预后评分比较,总的差异有统计学意义(F=65.91,P=0.000)。其中正常组与神经功能轻度异常组、死亡组与植物状态组之间差异无统计学意义(3.52±3.03 vs 4.88±3.52,P=0.318;15.47±3.31 vs 14.04±3.84,P=0.108);其他各组之间相互比较差异均有统计学意义(植物状态组vs重度神经功能异常组为14.04±3.84 vs 10.70±3.30,P=0.011;其他各组之间比较,均为P=0.000)。CPRROSC预后评分在8分以下对预后良好(正常或神经功能轻度异常)的病人区别能力最强;13分以上对预后严重不良的病人区别能力最强。CPRROSC预后评分对严重不良预后预测的ROC曲线下面积为0.950。结论CPRROSC预后评分对病人严重不良预后具有较高预测和区别能力,可以作为心肺复苏后昏迷病人最终预后预测的评价工具。