ANALYSIS OF VENTRICULAR REPOLARIZATION IN HYPERTENSIVE PATIENTS: INFLUENCE OF NOCTURNAL BLOOD PRESSURE DIPPING

Objective: To compare ventricular repolarization measurements (QT interval, QTc, Tp-Te, Tp-Te/QT, and QTd) in hypertensive dippers and non-dippers. Secondary objectives: compare measurements between controlled and uncontrolled hypertensive patients, as well as resistant and non-resistant. Design and method: This observational, cross-sectional study involved patients monitored in a Hypertension Service. The level of significance adopted in the statistical analysis was 5%. Results: A total of 130 participants were admitted. The mean age was 67.4 years, with 72% presenting some form of target organ damage. Repolarization measurements did not differ between dippers and non-dippers. However, within the resistant hypertension group compared to the non-resistant, differences were observed, as demonstrated in Table 1.Conclusions: In this high cardiovascular risk hypertensive population, no difference in repolarization measures was found between dippers and non-dippers. However, this is the first study to demonstrate increased ventricular repolarization measures in patients with resistant hypertension.