Ventricular repolarization duration and dispersion adaptation after atropine induced rapid heart rate increase in healthy adults
L Bergfeldt, G Lundahl, G Bergqvist, F Vahedi… - Journal of …, 2017 - Elsevier
Background Proper adaptation of ventricular repolarization (VR) to rapid heart rate (HR)
increase is crucial for cardiac electro-mechanical function. The pattern and temporal aspects
of this adaptation and its components (duration and dispersion) during normal conduction
are, however, incompletely known in humans and were the topic of this study. Methods &
results The VR duration (QT & QTpeak) and dispersion (Tamplitude, Tarea & ventricular
gradient; VG) responses were studied by continuous vectorcardiogram after a bolus …
increase is crucial for cardiac electro-mechanical function. The pattern and temporal aspects
of this adaptation and its components (duration and dispersion) during normal conduction
are, however, incompletely known in humans and were the topic of this study. Methods &
results The VR duration (QT & QTpeak) and dispersion (Tamplitude, Tarea & ventricular
gradient; VG) responses were studied by continuous vectorcardiogram after a bolus …
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