Determining factors in the presence of late potentials in patients with severe ventricular arrhythmias

pp 537-541

Abstract

This study was designed to correlate clinical variables and late potentials (LP) in 44 patients with severe arrhythmias, 13 with ventricular couplets, 13 with ventricular tachycardia, 11 with polimorphic ventricular premature beats and R on T phenomenon and 7 with previous ventricular fibrillation. Sixteen had healed myocardial infarction (MI), four with syncope, 6 were myocardiopaties (Myoc), 3 with syncope, and 22 had other pathologies. In 28 ejection fraction were analyzed. Late potentials were present in 22 patients. In myocardial infarction patients, 68.7 % had abnormal late potentials, and 33.33 % in myocardiopathies. This differences weren't significant among other pathologies. In syncope patients, 71.4 % presented abnormal late potentials and, if they had had myocardial infarction, the prevalence was 100 %. In patients with low ejection fraction, abnormal late potentials incidence was of 87.5 % and with myocardial infarction 100 %. There wasn't differences relating sex and age. In conclusion, harder variables in patients with severe ventricular arrhythmias were found in patients with healed myocardial infarction, low ejection fraction and syncope.