Where to Q in PEP
Where to Q in PEP
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DOI：
10.1111/j.1469-8986.2004.00156.x
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发表时间：
2004-03-01
期刊：
影响因子：
3.7
通讯作者：
Cacioppo, JT
中科院分区：
文献类型：
--
作者：
Berntson, GG;Lozano, DL;Cacioppo, JT
心室除极的开始定义了射血前期（PEP）的开始，PEP 通常用作心肌收缩力和心脏交感神经控制的指标。尽管传统上该起始点的基准点是心电图 Q 波的起始点，但文献中也使用了其他测量点，包括 Q 波的峰值（即 R 波的起始点）。针对这些替代指标的可靠性和有效性的概念、生理和经验考虑支持 Q 波峰值/R 波起始点作为 PEP 测量基准点的应用。
The onset of ventricular depolarization defines the start of the preejection period (PEP), which is commonly used as an index of myocardial contractility and sympathetic control of the heart. Although the fiducial point for this onset has traditionally been the onset of the Q wave of the electrocardiogram, other measurement points have also been used in the literature, including the peak of the Q wave (i.e., the onset of the R wave). Conceptual, physiological, and empirical considerations addressing the reliability and validity of these alternative metrics support the application of the Q-wave peak/R-wave onset as the fiducial point for PEP measures.