Why the study?
Does essential hypertension alter QT dispersion and heart rate variability compared to healthy normotensive controls?
Population
146 subjects total, comprising 76 patients with essential hypertension and 70 healthy normotensive controls…
Design
Cross-sectional
Authors
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May indicate arrhythmic predisposition in hypertension; hypothesis-generating and should not yet change practice.
Does essential hypertension alter QT dispersion and heart rate variability compared to healthy normotensive controls?
Essential hypertension is associated with increased QT dispersion and reduced heart rate variability, indicating impaired autonomic balance and increased repolarization inhomogeneity that may predispose to ventricular arrhythmias.
Kaftan et al. (2000) studied this question.
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