Comparison of Ventricular Late Potentials in Patients with Ischemic and NonIschemic Cardiomyopathies

Abstract

Objective: Our study aim was to compare the ventricular late potentials in patients with ischemic and nonischemic cardiomyopathy.
Method: It was a comparative cross sectional study conducted at Cardiac Electrophysiology unit in Armed ForcesInstitute of Cardiology, Rawalpindi from February 2019 toAugust 2019. Thirty individuals with ischemic cardiomyopathy as well as thirty with non-ischemic cardiomyopathy were nominated through non-probability purposive sampling. Patients with hypertension, bundle branch block, diabetes mellitus, heart failure, stroke and those on antiarrhythmic therapy were omitted from the study. Mortara ELI 350 Electrocardiograph was used to attain Signal Averaged ECG (SAECG). Data was analyzed using SPSS-23.
Results: Totalsixty subjects were recruited. Out ofthese, 30 were diagnosed cases ofIschemic cardiomyopathy and 30 were diagnosed cases of non-ischemic cardiomyopathy. Among those with ischemic cardiomyopathy 8(26.7%) had VLPs, while 6 (20.0%) non-ischemic patients had VLPs present. This difference wasstatistically insignificant. VLPs were absent in 22 (73.3%) patients with ischemic cardiomyopathy and 24 (80%) patients with non-ischemic cardiomyopathies.
Conclusion: As proven through literature, ventricular late potentials have a higher negative predictive value in comparison to their positive predictive value. Hence their absence in signal averaged ECG along with other cardiac tests helps us screen high risk population for ventricular arrhythmias.

How to cite: Ashraf H, Abid A, Imran M, Naeem S, Alamgir M. Comparison of Ventricular Late Potentials in Patients
with Ischemic and Non-Ischemic Cardiomyopathies. Esculapio - JSIMS 2022;18(04):248-252