寒冷压力压力对心脏再极化的影响
Lisa Drost1, Johannes B Finke2, Petra Bachmann1
1Department of Clinical Psychophysiology, University of Trier, Trier, Germany.
Stress (Amsterdam, Netherlands)
|May 20, 2024
概括
冷压器测试 (CPT) 显著改变心脏再极化,增加纠正的QT (QTc) 间隔长度和T波幅度 (TWA). 在压力期间心脏功能的这些变化与典型的心血管和皮质醇反应不同.
科学领域:
- 心理生理学 心理生理学
- 心脏病学 心脏病学
- 压力研究 压力研究
背景情况:
- 寒冷压力测试 (CPT) 是已知的交感神经系统 (SNS) 激活剂,导致显著的心血管反应,如心率 (HR) 和血压 (BP) 的增加.
- CPT对心室再极化的影响,特别是像纠正的QT (QTc) 间隔和T波幅度 (TWA) 这样的参数,仍然在很大程度上未被探索.
研究的目的:
- 研究CPT对健康男性心脏复极化的影响.
- 确定CPT诱导的心脏再极化变化和其他生理压力标志物,包括心血管反应和皮质醇水平之间的关系.
主要方法:
- 28名健康的男性参与了CPT和温水 (WW) 控制条件,分别是在不同的日子.
- 进行了心电图 (ECG) 和血压 (BP) 的持续监测.
- 在基线和压力阶段评估了唾液皮质醇,主观压力评级,QTc间隔长度和T波幅度 (TWA).
主要成果:
- 与基线和WW对照相比,CPT显著增加了QTc间隔长度和TWA升高.
- 压力引起的心脏再极化变化与心血管反应能力和唾液皮质醇水平的相关性很弱.
- CPT对心脏再极化的影响在很大程度上独立于其他测量的应激反应指数.
结论:
- 通过延长QTc间隔和增加TWA,CPT会影响心脏再极化.
- 在CPT压力期间,这些心脏再极化变化为理解心理生物学适应提供了潜在的有价值的增量措施.
- CPT诱导的心脏再极化动态可能会提供超越传统心血管和内分泌压力标志物的独特见解.
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