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术内QTc间隔解释:麻醉,心电图,校正公式,性别和当前极限的影响:前性观察性研究
Thomas Krönauer1, Lorenz L Mihatsch1,2,3, Patrick Friederich1,2
1Department of Anaesthesiology, Intensive Care Medicine, Pain Therapy, München Klinik Bogenhausen, Munich, Germany.
使用5导电心电图的纠正QT (QTc) 间隔的连续手术内监测是有效的,可与12导电图相比较. 麻醉期间的QTc解释受到校正公式和患者性别的影响,需要进一步研究性别特定的值.
科学领域:
- 心脏病学 心脏病学
- 麻醉学 麻醉学
- 医疗监测 医疗监测
背景情况:
- 严重的QT间隔延长需要在麻醉期间进行手术内QTc监测,通常是500毫秒的值.
- 目前使用12导电心电图的监测方法受到标准化问题的限制.
- 自动连续监控提供了潜在的改进.
研究的目的:
- 评估通过5导电心电图与12导电心电图测量的手术内QTc间隔的可比性.
- 评估不同QTc校正公式和患者性别对测量的影响.
- 为了比较手术中的QTc间隔与休息时的心电图,以确定麻醉是否需要特定的治疗值.
主要方法:
- 一项前性观察性研究,涉及100名接受麻醉的患者.
- 同时记录手术期间的QTc间隔,使用12导和5导心电图.
- 使用六种不同的校正公式 (Bazett,Friderica,Hodges,Framingham,Charbit,QTcRAS) 分析QTc值,按性别分层.
- 与区域社区基队列的休息心电图数据进行比较.
主要成果:
- 在12和5心电图之间,QT间隔持续时间没有显著差异 (p=0.793).
- 根据校正公式 (p<0.001) 和性别 (p<0.001) 观察到QTc持续时间的显著差异.
- 术内平均QTc (438毫秒) 比静止QTc (417毫秒) 高;QTc>500毫秒的发生率与配方奶粉有显著差异,女性的发生率是女性的十倍.
结论:
- 使用5导电心电图进行手术内QTc间隔测量是一种有效的方法.
- 校正公式和患者的性别显著影响手术内QTc持续时间和延长间隔的识别.
- 在全身麻醉下QTc间隔的性别特异性正常限值需要进一步调查.
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