Understanding Left Ventricular Hypertrophy: Causes, Diagnosis, Risks, and Management

Normal Left Ventricular Wall Thickness

• Men: < 1.4 cm (0.55 inches)
• Women: < 1.2 cm (0.47 inches)

What Is Left Ventricular Hypertrophy (LVH)?

LVH is a thickening of the left ventricular wall beyond normal limits. The left ventricle is the heart's main pumping chamber; when its wall thickens, the heart must work harder to eject blood.

Common Causes

• Hypertension (high blood pressure) — the leading cause; chronic pressure overload forces the muscle to thicken.
• Aortic stenosis — narrowing of the aortic valve increases resistance.
• Hypertrophic cardiomyopathy — a genetic condition causing abnormal thickening.
• Diabetes, obesity, sleep apnea, and athletic training (physiologic LVH) can also contribute.

Clinical Significance

LVH is an independent risk factor for:

• Heart failure
• Arrhythmias (especially atrial fibrillation)
• Coronary artery disease
• Stroke and sudden cardiac death

Diagnosis

Echocardiography is the gold standard. ECG may show voltage criteria for LVH but is less sensitive.

Management

Treating the underlying cause (especially blood pressure control) can regress LVH and reduce cardiovascular risk.