目的：探讨连续心率减速力(DRs))联合其他预警指标对慢性冠脉综合征(CCS)患者猝死的预警分析 方法: 选取2019-2020年在我院住院的CCS患者共98例为观察组,50例健康人为对照组。比较两组的DRs、左室射血分数(LVEF)、左室舒张末径(LVEDD)和QT离散度(QTd)。对DRs危险分层进行比较。对观察组主要不良心血管事件(MACE)发生的预测指标进行分析。结果：①CCS组较对照组各指标明显异常②CCS组缺血性心肌病(ICM)亚组DRs中高危患者明显增多和对照组比较有统计学意义(P<0.05)③通过回归分析发现LVEF对MACE发生的预警价值更高。结论：CCS患者有猝死的风险,ICM亚组患者猝死风险更高。LVEF对猝死发生有很高的预警价值。对于LVEF正常的患者DRs与QTd对猝死预测的价值更高。

objective:To investigate the early warning analysis of heart rate deceleration runs(DRs) combined with other warning indicators for sudden death in patients with chronic coronary syndrome (CCS).Methods:A total of 98 CCS patients hospitalized in our hospital from 2019-2020 were selected as the observation group and 50 healthy patients as the control group.DRs,left ventricular ejection fraction (LVEF),left ventricular end-diastolic diameter (LVEDD) and QT dispersion (QTd) were compared between the two groups.DRs risk stratification was compared.The predictors of major adverse cardiovascular events (MACE) in the observation group were analyzed.Results: ①The indicators of CCS group were significantly abnormal compared with the control group.② The ischemic cardiomyopathy (ICM)subgroup of CCS group showed a significant increase in high-risk patients in the DRs, there were statistically differences compared with the control group(P<0.05).③Through regression analysis, it is found that LVEF has higher early-warning value for MACE occurrence.Conclusion:CCS patients are at risk of sudden death,patients in the ICM subgroup had a higher risk of sudden death.LVEF has a high early-warning value for sudden death.DRs and QTd have higher predictive value for sudden death in patients with normal LVEF.

R541.4

内蒙古自治区高等学校科学研究项目(编号NJZZ18099)