Valor diagnóstico y pronóstico del electrocardiograma en la miocardiopatía no compactada

Abstract

Introduction and objectivesFew studies have assesed the role of the electrocardiogram in left ventricular non-compaction cardiomyopathy. Our aim is to review the specific features of electrocardiogram in this cardiomyopathy, as well as to establish its prognostic value to predict left ventricular dysfunction and major clinical events. MethodsBasal electrocardiograms of 20 patients were retrospectively and blindly analysed and compared to a control group of healthy people. Patients were clinically and echocardiographically assessed. ResultsA total of 85% of electrocardiograms were abnormal in affected individuals, compared to 5% in the control group (QRS and corrected QT intervals were longer in cases). Patients with left ventricular ejection fraction<35% showed a wider QRS and longer corrected QT intervals. ConclusionsPatients affected by left ventricular non-compaction cardiomyopathy have an abnormal electrocardiogram. A wide QRS interval and a prolonged corrected QT may predict adverse clinical events such as cardiac failure and left ventricular ejection fraction impairment.