渐进式缺血后适应对急性ST段抬高型心肌梗死患者心脏自主神经功能的保护作用Protective effects of gradual ischemic postconditioning to cardiac autonomic nervous function of patients with ST-segment elevation myocardial infarction
韩增雷,孙学玉,王修卫,王庆久
摘要(Abstract):
目的 观察对急性ST段抬高型心肌梗死(STEMI)患者行急诊经皮冠状动脉介入治疗(PCI),采用渐进式缺血后适应术式,对心脏自主神经功能的保护作用及临床意义。方法 选择2019年3月至2020年9月在青岛市第八人民医院心内科住院并行急诊PCI的STEMI患者121例,随机分为对照组(60例,常规PCI)和试验组(61例,渐进式缺血后适应治疗);渐进式缺血后适应治疗采用4次循环:球囊阻塞/撤压(60 s/15 s,60 s/30 s,30 s/30 s,15 s/30 s)。比较两组患者PCI术中再灌注心律失常发生率,术后交感神经或迷走神经的过度兴奋发生率,心率震荡及心率变异性参数(震荡初始、震荡斜率、平均R-R间期标准差、每5 min平均R-R间期的标准差),术后肌钙蛋白T、N末端B型脑钠肽前体、超敏C反应蛋白的峰值水平,超声心动图指标,及术后主要不良心血管事件(MACE)。结果 试验组相较于对照组,可减少术后再灌注心律失常发生率(42.6%比65.0%,P=0.014),抑制术后交感神经过度兴奋(16.4%比38.3%,P=0.007)及迷走神经过度兴奋(9.8%比26.7%,P=0.016),降低震荡初始[(0.37±0.43)%比(0.63±0.36)%,P<0.001]及升高震荡斜率[(10.56±3.75)ms/RRI比(7.81±3.03)ms/RRI,P<0.001]、平均R-R间期标准差[(131.2±23.6)ms比(102.6±20.3)ms,P<0.001]、每5 min平均R-R间期的标准差[(102.5±18.3)ms比(86.7±15.9)ms,P<0.001],明显降低术后肌钙蛋白T[(833.46±95.73)pg/ml比(952.57±102.16)pg/ml,P<0.001]、N末端B型脑钠肽前体[(7.35±1.49)pg/ml比(8.92±1.76)pg/ml,P<0.001]、超敏C反应蛋白水平[(913.27±105.41)mg/L比(1062.35±139.87)mg/L,P<0.001]。两组患者术后1周超声心动图指标[左心室射血分数(LVEF)、左心室舒张末期内径(LVEDd)]比较,差异均无统计学意义(均P>0.05);但术后4周对照组与试验组LVEF[(48.08±10.17)%比(52.06±11.76)%,P=0.049]、LVEDd[(50.43±5.22)mm比(48.32±5.50)mm,P=0.033]比较,差异均有统计学意义。对照组术后4周与术后1周LVEF比较,差异无统计学意义(t=0.929,P=0.355),但LVEDd比较,差异有统计学意义(t=2.966,P=0.004)。试验组术后4周与术后1周LVEF比较(t=2.154,P=0.033)、LVEDd比较(t=3.905,P<0.001),差异均有统计学意义。试验组患者MACE发生率显著低于对照组(14.8%比36.7%,P=0.006),并且严重心律失常发生率(6.6%比20.0%,P=0.029)、急性心力衰竭发生率(4.9%比16.7%,P=0.037)均显著低于对照组,差异均有统计学意义。结论 对STEMI患者采用渐进式缺血后适应术式可减少再灌注心律失常,抑制术后交感神经或迷走神经的过度兴奋,促进心脏自主神经功能恢复,减少MACE发生。
关键词(KeyWords): 缺血后适应;再灌注心律失常;自主神经系统;ST段抬高型心肌梗死
基金项目(Foundation): 青岛市医药科研指导计划项目(2020-WJZD095)
作者(Author): 韩增雷,孙学玉,王修卫,王庆久
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