Study of the effect of left ventricular hypertrophy on Q-T dispersion in patients with essential hypertension

ABSTRACT

There is increasing interest in Q-T dispersion as a marker of inhomogenicity of ventricular repolarization and hence ventricular arrhythmia due to re-entery. This study was performed to assess QT- dispersion in hypertensive patients with and without left ventricular hypertrophy. The study included 50 hypertensive patients 25 patients with left ventricular hypertrophy [LVH] [Echo-diagnosed] as group I and 25 without LVH as group II. Every patient was subjected to full history taking and thorough clinical examination, analysis of serum sodium and potassium, EGG for measurernent of QT- dispersion and echocardiography for detection of left ventricular hypertrophy. The study showed that QT dispersion was significantly increased in presence of left ventricular hypertrophy in hypertensive patients compared with that in hypertensives without left ventricular hypertrophy. So, early detection of LVH is of important valve in detecting the hypertensives who are at higher risk for arrhythmia and sudden death- Those patients must be investigated by arrhythmogenic marke