Key result
In patients without left ventricular hypertrophy, hypertension was associated with a higher frequency of fragmented QRS compared to normotension (36.4% vs 17.6%, P<0.05).
Why the study?
Is hypertension associated with the presence of fragmented QRS on electrocardiography in patients without left ventricular hypertrophy?
Cross-Sectional (n=548)
Is hypertension associated with the presence of fragmented QRS on electrocardiography in patients without left ventricular hypertrophy?
Answers are grounded in this paper and cite their sources.
In never-treated patients without left ventricular hypertrophy, elevated systolic blood pressure is significantly associated with the presence of fragmented QRS on electrocardiography.
In the absence of left ventricular hypertrophy, importance of fragmented QRS complex (fQRS) in individuals with hypertension is unknown. The authors aimed to evaluate the relationship between blood pressure levels and fQRS in the absence of left ventricular hypertrophy. A total of 548 never-treated patients who underwent 24-hour ambulatory blood pressure monitoring were enrolled. The frequency of fQRS was significantly higher in patients with hypertension than normotension (36.4% vs 17.6%, P<.05). Multivariate logistic regression analysis revealed that systolic blood pressure is significantly associated with presence of fQRS on electrocardiography (odds ratio, 0.931; 95% CI, 0.910-0.9521 [P<.001]) even after adjusting for other confounding factors. Receiver operating characteristic analysis revealed a cutoff value of 147.65 mm Hg for systolic blood pressure to predict presence of fQRS (sensitivity: 51%, specificity: 99%, area under the curve=0.764; 95% CI, 0.717-0.811 [P<.001]). fQRS may be a sign of increased blood pressure and may predict higher fibrotic burden in patients with hypertension.
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Eyüboğlu et al. (2017) conducted a cross-sectional in Hypertension without left ventricular hypertrophy (n=548). Hypertension vs. Normotension was evaluated on Presence of fragmented QRS (fQRS) on electrocardiography (OR 0.931, 95% CI 0.910-0.9521, p=<.001). In patients without left ventricular hypertrophy, hypertension was associated with a higher frequency of fragmented QRS compared to normotension (36.4% vs 17.6%, P<0.05).
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