摘要
目的探讨远端缺血预处理(RIPC)对心脏瓣膜术患者心、肾功能和预后的影响,并分析影响预后的危险因素。方法筛选2016年1月至2018年6月在河南省胸科医院住院治疗的心脏瓣膜术患者113例,按照随机数字表法分为RIPC组(56例)和对照组(57例)。麻醉诱导后,RIPC组患者行3轮无创左下肢RIPC。比较两组患者围术期的血流动力学、心、肾功能。随访6个月,比较两组的不良心肾事件。单因素和多因素logistic回归分析影响不良心肾事件的危险因素。结果入选的113例患者中,男性77例(68.1%),平均年龄(53.1±15.4)岁。两组患者的年龄、男性比例、体质指数等均无明显差异(均为P>0.05)。瓣膜置换术后,两组的血肌酐、尿素氮和肌钙蛋白I持续升高,但RIPC组的上述指标明显低于对照组(均为P<0.05)。RIPC组的体外循环时间、主动脉阻断时间、ICU住院时间和总住院时间均少于对照组,但差异均无统计学意义(均为P>0.05)。平均随访(6.2±1.1)个月,11例(9.7%)患者失访。两组的急性肾损伤和心肾不良事件发生率无明显差异(均为P>0.05)。多因素logistic回归分析发现老年(≥60岁)、左室射血分数低(<45%)和体外循环时间长(≥135 min)是发生不良心肾事件的危险因素。结论 RIPC可改善瓣膜置换术患者的心、肾功能,但对短期不良心肾事件发生率无显著影响。老年、左室射血分数低和体外循环时间长是发生不良心肾事件的危险因素。
引文
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