臂动脉多普勒作为一种新的诱导后低血压预测器:一个前性的观察性研究
Mina Adolf Helmy1, Hadir Mohamed Mamdouh1, Nader N Naguib1
1Department of Anesthesia and Critical Care Medicine, Cairo University, Cairo, Egypt.
Anaesthesia, critical care & pain medicine
|November 14, 2025
概括
臂动脉多普勒指数可以预测手术患者的诱导后低血压 (PIH). 脉动指数 (PI) 和电阻指数 (RI) 的变化,以及波形模式,为这种常见的麻醉并发症提供了早期警告.
科学领域:
- 麻醉学 麻醉学
- 血管超声波是指血管超声波.
- 血液动力学监测 血液动力学监测
背景情况:
- 诱导后低血压 (PIH) 是一般麻醉期间常见的一种不良事件,特别是在propofol.
- 它可能源于血管扩张,心脏输出减少和心肌收缩能力受损.
- 手臂动脉的可访问性使其成为早期PIH检测的潜在地点.
研究的目的:
- 为了研究手臂动脉多普勒指数的实用性,作为PIH的早期预测者.
- 评估多普勒衍生测量与PIH发生之间的相关性.
- 评估特定的指数,如脉动性指数 (PI),电阻指数 (RI) 和波形形态变化 (ΔM).
主要方法:
- 一项前性观察性研究,涉及90名接受腹部或骨盆外科手术的成年患者.
- 手臂动脉多普勒超声波在麻醉诱导前和后进行.
- 分析包括脉动性指数 (PI),电阻性指数 (RI) 和波形变化 (ΔM),PIH被定义为诱导后平均动脉压下降>20%.
主要成果:
- 诱导后低血压 (PIH) 在39%的患者中发生.
- 在低血压患者中,诱导后减少的PI和RI更为明显.
- 基线PI (>5.22) 和动态变化 (ΔPI>13.6%, ΔRI>12%, ΔM) 显示PIH的高预测精度 (AUC 0.83-0.93).
- 波形变化 (三相到单相) 预测PIH具有100%的灵敏度和84%的特异性.
结论:
- 臂动脉多普勒指数的动态变化 (ΔPI>21%,ΔRI>12%) 是手术患者PIH的强有力的预测因素.
- 基线PI (>5.22) 也可靠地预测PIH.
- 动脉波形形态变化准确地识别PIH发生.
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