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Prevalence of late ventricular potentials in hypertensive patients
S Brune1, B D Gonska, C Fleischmann
1Department of Cardiology, University Hospital, Göttingen, F.R.G.
Insights
Late ventricular potentials, indicators of heart rhythm issues, are more prevalent in hypertensive individuals without coronary artery disease. Further research is needed to confirm their predictive value for arrhythmias in this population.
Area of Science:
- Cardiology
- Electrophysiology
- Hypertension Research
Background:
- Late ventricular potentials (LVPs) detected by signal averaging are crucial for predicting ventricular arrhythmias and sudden cardiac death in patients with coronary artery disease.
- The prevalence and significance of LVPs in individuals with normal coronary arteries, particularly those with hypertension, remain less understood.
Purpose of the Study:
- To investigate the prevalence of signal-averaged late ventricular potentials in male patients with angiographically normal coronary arteries.
- To compare the prevalence of LVPs between hypertensive and normotensive patient groups.
Main Methods:
- Signal-averaged electrocardiography (ECG) was used to detect late ventricular potentials.
- A cohort of 37 male patients (mean age 56 years) with normal coronary arteries was divided into two groups: 17 hypertensive (Group A) and 20 normotensive (Group B).
Main Results:
- Late ventricular potentials were identified in 29% of hypertensive patients (5 out of 17).
- In contrast, only 5% of normotensive patients (1 out of 20) exhibited late ventricular potentials (p < 0.05).
- LVPs were significantly more common in hypertensive patients with normal coronary arteries compared to their normotensive counterparts.
Conclusions:
- Signal-averaged late ventricular potentials are more prevalent in hypertensive patients with normal coronary arteries than in normotensive individuals.
- Further studies are warranted to determine if LVPs can predict malignant ventricular arrhythmias or sudden cardiac death in hypertensive patients.
Abstract:
Late ventricular potentials detected by signal averaging are used for predicting ventricular arrhythmias and sudden cardiac death in patients with coronary artery disease. We studied the prevalence of signal-averaged late ventricular potentials in 37 male patients (mean age of 56 years) with angiographically normal coronary arteries. Seventeen patients were hypertensive (group A) and 20 patients were normotensive (group B). In group A, 5 of 17 patients (29%) had late ventricular potentials. In group B, only 1 of 20 patients (5%) had late potentials (p less than 0.05). Late ventricular potentials detected by signal averaging are more common in hypertensive patients than in healthy controls. Whether late ventricular potentials can be used to predict malignant ventricular arrhythmias or sudden cardiac death in hypertensive patients will have to be investigated in further studies.