Left ventricular hypertrophy. A cardiovascular risk factor in essential hypertension

Area of Science:

• Cardiology
• Gerontology
• Hypertension Research

Background:

• Arterial hypertension increases cardiac afterload, prompting adaptive increases in left ventricular wall thickness.
• This adaptation, known as left ventricular hypertrophy (LVH), is particularly prevalent in elderly hypertensive individuals.
• LVH is associated with increased posterior wall thickness, common in both hypertension and aging.

Purpose of the Study:

• To investigate the clinical significance and implications of left ventricular hypertrophy in the context of aging and hypertension.
• To highlight the increased risk of cardiovascular events and arrhythmias associated with LVH.
• To emphasize the importance of therapeutic strategies in managing LVH and associated risks.

Main Methods:

• Review of existing epidemiological data, including findings from the Framingham study.
• Analysis of Holter monitoring data to assess prevalence of ventricular arrhythmias in patients with and without LVH.
• Correlation of LVH with Lown's arrhythmia classification.

Main Results:

• Left ventricular hypertrophy is highly prevalent in elderly hypertensive patients (over 50%).
• LVH significantly increases the risk of sudden death (5-6 times higher) and cardiovascular morbidity/mortality.
• Patients with LVH exhibit a markedly higher prevalence of premature ventricular contractions (40-50 times higher) and more severe arrhythmias (higher Lown's classes).

Conclusions:

• Left ventricular hypertrophy is a common and significant condition, especially in the elderly hypertensive population.
• LVH is a strong independent risk factor for ventricular ectopy, serious arrhythmias, and sudden cardiac death.
• Antihypertensive therapies must carefully consider and avoid electrolyte disturbances (e.g., hypokalemia, hypomagnesemia) that exacerbate arrhythmia risk in LVH patients.