Prevalence and Prognostic Significance of Late Potentials in Coronary Artery Disease [Turk Kardiyol Dern Ars]
Turk Kardiyol Dern Ars. 1991; 19(3): 203-208

Prevalence and Prognostic Significance of Late Potentials in Coronary Artery Disease

İrfan SABAH1, M.Özcan UĞURLU1, Murat SUHER1, Hamit TAŞDEMİR1, Musa BALİ1, Mehmet SÖKMEN1, Selçuk UYSAL1

Ventricular late potantials (LP) occurring after the QRS complex were detected on the body surface using high-resolution ECG and signal-averaging techniques in 14 normal subjects and 62 patients with coronary artery disease (CAD). All patients had a previous myocardial infarction and were not taking antiarrhythmic drugs. In the control subjects no LP were recorded. The prevalence of LP was 34 % in patients with CAD. Among 43 patients without documented ventricular tachycardia and/or fibrillation (VT/VF), LP were present in 9 (21 %), of 19 patients with documented VT/VF 12 (63 %) had LP. The prevalence of LP increased to 77 % (17 of 22) in the presence of ventricular aneurysm or akinesia. During the follow-up period (mean 6.1 months) 7 patients with LP (33 %) presented an episode of sustained VT/VF and 4 of them (19 %) died from documented VT/VF. An episode of VT/VF appeared in only 2 patients (5 %) without LP. We conclude that LP are a frequent finding in patients with regional contraction abnormalities, both in patients with or without documented VT/VF, their presence increases the risk of VT/VF and sudden arrhythmic death.

Keywords: Sudden death, Signal-averaged ECG, late potentials

How to cite this article
İrfan SABAH, M.Özcan UĞURLU, Murat SUHER, Hamit TAŞDEMİR, Musa BALİ, Mehmet SÖKMEN, Selçuk UYSAL. Prevalence and Prognostic Significance of Late Potentials in Coronary Artery Disease. Turk Kardiyol Dern Ars. 1991; 19(3): 203-208
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