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[Ventricular arrhythmia in patients with hypertension and left ventricular hypertrophy]
1Département de médecine, Royal Victoria Hospital, université Mc Gill, Montréal, Canada.
Insights
Left ventricular hypertrophy in hypertension patients increases risks of sudden death and arrhythmias. Early treatment and antihypertensive choices that reduce hypertrophy are key to prevention.
Area of Science:
- Cardiology
- Hypertension Research
- Electrophysiology
Context:
- Left ventricular hypertrophy (LVH) is a significant complication in hypertensive patients.
- Hypertension-induced LVH is linked to increased risks of ventricular arrhythmias and sudden cardiac death.
Purpose:
- To review epidemiological evidence supporting the association between LVH and adverse cardiac events in hypertensives.
- To discuss potential mechanisms and management strategies for ventricular arrhythmias in this population.
Summary:
- Epidemiological data strongly link left ventricular hypertrophy in hypertensive individuals to a higher incidence of ventricular arrhythmias and sudden death.
- Mechanisms remain unclear but may involve cellular electrophysiology, myocardial tissue changes, or silent ischemia.
- Management focuses on preventing/reducing LVH through aggressive hypertension control and appropriate antihypertensive selection, alongside electrolyte balance and judicious use of antiarrhythmics.
Impact:
- Highlights the critical need for managing LVH in hypertension to mitigate arrhythmia risk.
- Informs clinical practice regarding antihypertensive selection and patient monitoring.
- Underscores the importance of a multi-faceted approach to preventing sudden cardiac death in hypertensive patients with LVH.
Abstract:
Left ventricular hypertrophy is a problem in itself in patients with hypertension. Hypertensives with left ventricular hypertrophy have a higher incidence of ventricular arrhythmias and sudden death. This article reviews the epidemiological evidence in favour of this association. Although the mechanism of ventricular arrhythmias in patients with left ventricular hypertrophy in unclear, several hypotheses have been suggested including cellular electrophysiological changes, alterations of the myocardial tissue and silent myocardial ischemia. The management of ventricular arrhythmias in hypertensive patients implies an effort to prevent left ventricular hypertrophy by early and aggressive treatment and a judicious choice of antihypertensive agents capable of reducing left ventricular hypertrophy. It is also important to avoid hypokalemia and other electrolytic disorders. Antiarrhythmic drugs should be reserved for symptomatic patients who do not respond to other preventive measures.