Key result
QTc interval by Fridericia showed a moderate positive correlation with left ventricular peak global longitudinal strain (r=0.426; p=0.013), whereas short-term HRV showed no significant correlation.
Why the study?
Early identification of LV remodeling and dysfunction in stable CAD is important, and short-term HRV and QT interval are practical electrocardiographic parameters that may reflect LV systolic function.
Cross-Sectional (n=33)
No
Effect estimate: r=0.426
p-value: p=0.013
QTc interval correlates weakly to moderately with left ventricular peak global longitudinal strain in patients with stable coronary artery disease, whereas short-term heart rate variability does not.
No takes yet. Share an insight, caveat, or question.
QTc-GLS association in stable CAD is hypothesis-generating; should not yet change practice or guide management.
Panda et al. (2021) conducted a cross-sectional in Stable Coronary Artery Disease (CAD) (n=33). Short-term Heart Rate Variability (HRV) and QT interval was evaluated on Correlation with left ventricular systolic function (peak Global Longitudinal Strain and ejection fraction) (r=0.426, p=0.013). QTc interval by Fridericia showed a moderate positive correlation with left ventricular peak global longitudinal strain (r=0.426; p=0.013), whereas short-term HRV showed no significant correlation.
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