J Am Coll Cardiol:急性心肌梗塞和心脏骤停后休克患者的更佳血压值是多少?

2021-05-08 MedSci原创 MedSci原创

对于急性心肌梗塞(AMI)后的休克患者,药物支持的最佳水平尚不清楚。高剂量的药物可能会增加心肌耗氧量并诱发心律失常,而舒张期低血压可能会减少冠状动脉灌注并增加梗塞面积。近日,研究人员探究了AMI和心脏

对于急性心肌梗塞(AMI)后的休克患者,药物支持的最佳水平尚不清楚。高剂量的药物可能会增加心肌耗氧量并诱发心律失常,而舒张期低血压可能会减少冠状动脉灌注并增加梗塞面积。近日,研究人员探究了AMI和心脏骤停后休克患者的最佳平均动脉压(MAP),研究结果已发表于J Am Coll Cardiol。

研究使用了病人层面的集合分析,患者随机选择入院后36小时内MAP 65 mm Hg或MAP 80/85-100 mm Hg目标的AMI后休克病人。主要终点是72小时高敏肌钙蛋白-T曲线下的面积。

 

结果显示,在最初随机的235名患者中,120名患者患有AMI并出现休克。分配到较高MAP目标的患者(n = 58)接受了较高剂量的去甲肾上腺素(p = 0.004)和多巴胺(p = 0.01),达到了较高的MAP(86 ± 9 mm Hg vs. 72 ± 10 mm Hg, p < 0.001)。虽然入院时的血流动力学和血管造影结果都很平衡,而且血管重建也同样有效,但被分配到较高MAP目标的患者,72小时高敏肌钙蛋白-T曲线下的面积较低(中位数:1.14μg.72小时/升[四分位数范围:0.35-2.31μg.72小时/升]VS中位数:1.56μg.72小时/升[四分位数范围:0.61-4.72μg.72小时/升];P = 0.04)。额外的药物支持并没有增加新的心脏骤停(p = 0.88)或心房颤动(p = 0.94)的风险。两组患者在180天内有良好的神经系统结果的存活率没有差异(64%VS.53%,OR:1.55;95%置信区间:0.74-3.22)。

综上所述,该研究结果表明,在心肌梗死后休克的患者中,将MAP定位在80/85和100 mm Hg 之间,并额外使用肌注和血管抑制剂,与较小的心肌损伤有关。

 

原始出处:

 

Koen Ameloot, et al., Optimum Blood Pressure in Patients With Shock After Acute Myocardial Infarction and Cardiac Arrest. J Am Coll Cardiol. 2020 Aug 18;76(7):812-824. doi: 10.1016/j.jacc.2020.06.043.

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    2021-05-10 Doctoryangbai

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