Duración y dispersión del QRS para predecir arritmias ventriculares en las fases iniciales del infarto agudo de miocardio

Sudden in-hospital death after acute myocardial infarction in Cuba in the past 3 years: Analysis of institutional records

“…In this same center, in a previous registry instigated in 2014 19 , a mortality due to ventricular arrhythmias of 8.6% was reported, and nearly 4% of patients with STEAMI discharged alive experienced them at some point of their hospitalization. Thrombolytic treatment administration, in comparison with not receiving it, behaved as a protective factor by reducing the probability of SD almost to the half, although there was no statistically significant difference (OR, 0.52; CI, 0.247-1.094; p = 0.08).…”

Muerte súbita intrahospitalaria luego de infarto agudo de miocardio en Cuba en los últimos tres años. Análisis de registros institucionales

“…En este mismo centro, en un registro previo desde 2014 19 , se notificó un 8.6% de mortalidad por arritmias ventriculares y cerca del 4% de los pacientes con IMAEST egresados vivos las presentó en algún momento de su ingreso. La aplicación de tratamiento con trombolíticos en comparación con aquellos que no lo recibieron se comportó como un factor protector al reducir la probabilidad de MS casi a la mitad, aunque sin diferencia estadística (OR, 0.52; IC, 0.247-1.094; p = 0.08).…”

Missing Link Between Molecular Aspects of Ventricular Arrhythmias and QRS Complex Morphology in Left Ventricular Hypertrophy

“…The prolonged QRS complex duration is a significant predictor of ventricular arrhythmia [64][65][66]. The interpretation of the relation between the prolonged QRS complex duration and occurrence of ventricular is quite straightforward and logical: the slowed activation of the ventricles (ventricular depolarization) prolongs the QRS complex duration, and pathophysiologically, the altered conduction of the ventricular myocardium is one of the characteristics of the arrhythmogenic substrate.…”

“…Summarizing, it has been shown that QT interval as a predictor of ventricular arrhythmias has its potential; however, it has also its challenges in interpretation as well as in its precise measurement. [65,88].…”