What is the most common cause of left ventricular hypertrophy in the United States?

What is the most common cause of left ventricular hypertrophy in the United States?

• A. Aortic stenosis
• B. Chronic hypertension
• C. Hyperlipidemia
• D. Athletic training

Answer: (B)

Chronic hypertension drives LVH because the heart must pump against consistently elevated systemic pressure, creating a sustained afterload increase. To reduce wall stress under that pressure, the left ventricle adds sarcomeres in parallel, thickening the wall — a pattern known as concentric hypertrophy. This adaptation is the most common cause of LVH in the United States since high blood pressure is very prevalent. Other conditions can cause LVH (aortic stenosis, athletic training), but they are less common population-wide, and hyperlipidemia does not directly cause LVH. Controlling blood pressure can help regress LVH and lower related risks.

Chronic hypertension drives LVH because the heart must pump against consistently elevated systemic pressure, creating a sustained afterload increase. To reduce wall stress under that pressure, the left ventricle adds sarcomeres in parallel, thickening the wall — a pattern known as concentric hypertrophy. This adaptation is the most common cause of LVH in the United States since high blood pressure is very prevalent. Other conditions can cause LVH (aortic stenosis, athletic training), but they are less common population-wide, and hyperlipidemia does not directly cause LVH. Controlling blood pressure can help regress LVH and lower related risks.