Objectives: This study aimed to investigate the relationship between subclinical left ventricular (LV) systolic dysfunction and ECG parameters in newly diagnosed hypertension patients.
Methods: In this cross-sectional study, adults diagnosed with hypertension based on 24-h ambulatory blood pressure monitor recordings were included. The patients were classified into two groups based on the presence of subclinical LV systolic dysfunction according to LV global longitudinal strain (LVGLS). Findings were compared between the two groups.
Results: A total of 244 patients (female, 55.7%) were included. Based on LVGLS, 82 (33.6%) patients had subclinical LV systolic dysfunction. The proportion of early repolarization pattern (ERP) on ECG was significantly higher in patients with subclinical LV systolic dysfunction than in patients with normal LV systolic function [24 (28.6%) vs. 8 (5%), P < 0.001]. PR and corrected QT intervals were also significantly longer in patients with subclinical LV systolic dysfunction than in patients with normal LV systolic function [median (interquartile range), 148 (132-158) vs. 141 (127-152), P = 0.036 and 443 (427-459) vs. 431 (411-455), P = 0.007, respectively]. According to multivariate regression analysis ERP, early (E) wave velocity/late (A) wave velocity (E/A), and LV mass index were independently associated with subclinical LV systolic dysfunction.
Conclusion: In newly diagnosed hypertension patients, the ERP on admission ECG could be a sign of subclinical systolic dysfunction.
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