Key result
Left ventricular hypertrophy types did not affect QT interval duration, corrected QT, or QT dispersion, though QT dispersion was significantly increased in males with severe hypertrophy.
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This letter to the editor discusses findings on the relationship between left ventricular hypertrophy types and QT interval parameters in hypertensive patients.
To the Editor, We read the article titled "Influence of the left ventricular types on QT intervals in hypertensive patients" by Kunisek et al. (1) published in the January issue of Anatol J Cardiol with great interest. In this welldesigned research, the authors investigated the effects of left ventricular hypertrophy (LVH) types on cardiac repolarization parameters and severity of ventricular arrhythmias using 12-lead ECG and ambulatory ECG monitoring in hypertensive subjects. In conclusion, they reported that the repolarization parameters of QT interval (QTI) duration, corrected QT interval (QTc), and QT dispersion (QTd) are not affected by the degree and type of LVH. Meanwhile, they found that QTd was significantly and QTI non-significantly increased in male patients with severe concentric and eccentric hypertrophy. In addition, they revealed that QTI was significantly prolonged in subjects with complex ventricular arrhythmias (Lown III-V) compared with that in subjects with simple ventricular arrhythmias (Lown I-II).
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Yiğiner et al. (2015) conducted a letter in Hypertension. Left ventricular hypertrophy (LVH) types was evaluated on Cardiac repolarization parameters (QTI, QTc, QTd) and severity of ventricular arrhythmias. Left ventricular hypertrophy types did not affect QT interval duration, corrected QT, or QT dispersion, though QT dispersion was significantly increased in males with severe hypertrophy.
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