摘要目的 探讨心肺复苏自主循环恢复后的患者在目标温度管理期间出现心动过缓与中枢神经系统预后之间的相关性.方法 选择经心肺复苏自主循环恢复后的昏迷患者43例,所有患者均接受目标温度管理,目标温度32～34℃,根据目标温度管理期间患者最低心率,分成心动过缓组(＜50次/min)和对照组(≥50次/min),分别测定两组患者入院时(h0)、入院后24 h(h24)、48 h(h48)、72 h(h72)的脑电双频指数(BIS)和神经元特异性烯醇化酶(NSE)的水平,观察其3个月预后,进行大脑功能评分(cerebral-performance category,CPC).结果 目标温度管理期间,心动过缓组患者h0、h48、h72的BIS水平高于对照组, [h0心动过缓组(73.0±12.3),对照组(58.0±18.6),P＜0.01]、[h48心动过缓组(71.4±21.2),对照组(46.3±18.9),P＜0.01]、[h72心动过缓组(78.6±24.6),对照组(51.8±24.1),P=0.01];NSE水平在第3日(h72)心动过缓组明显低于对照组[心动过缓组(118.8±118.8)ng/mL,对照组(248.3±191.9) ng/mL,P=0.02];心动过缓组患者3个月后CPC评分明显高于对照组(P=0.046).结论 目标温度管理期间出现心动过缓的患者有良好的神经功能预后,可为患者预后和临床决策提供帮助.

abstractsObjective To evaluate the association between bradycardia and neurological sequel in patients with restoration of spontaneous circulation (ROSC) after cardiopulmonary resuscitation (CPR) during targeted body temperature management (TTM).Methods Forty-three unconscious patients with ROSC after CPR were treated with TTP.The patients were cooled with therapeutic hypothermia to body temperature target range (32-34°C) after cardiac arrest and divided into bradycardia and control groups depending on the lowest heart rate less than 50 beats/min and more than or equal to 50 beats/min respcetively at that time.The bispectral index (BIS) and the neuron-specific enolase (NSE) values were respectively recorded at the following intervals,0h (h0)、24h (h24)、48h (h48)、72h (h72) after ICU admission.Neurological outcome was defined according to the Pittsburgh cerebral performance category (CPC) at 3 months after ICU discharge.Results Compared with the control group,during TTM the bispectral index levels were significantly higher in the bradycardia group at h0,h48,h72 after admission,(h0 bradycardia group 73.0 ± 12.3;control group 58.0 ± 18.6,P ＜0.01)、(h48 bradycardia group 71.4 ± 21.2;control group 46.3 ± 18.9,P ＜ 0.01)、(h72 bradycardia group 78.6 ± 24.6;control group 51.8 ± 24.1,P =0.01).The neuron-specific enolase level in bradycardia group was significantly lower than that in control group on day3 (118.8 ± 118.8 ng/mL vs.248.3 ± 191.9 ng/mL,P =0.02).The level of CPC in the bradycardia group was significantly higher than that in the control group (P =0.046).Conclusions Patients with bradycardia during TTM had favorable neurological outcome,which could provide evidence for clinical treatment and prognostic evaluation of the patients.