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A review of rhythm disorders in cardiac hypertrophy

J M McLenachan1, H J Dargie

  • 1Department of Cardiology, Western Infirmary, Glasgow, United Kingdom.

The American Journal of Cardiology
|April 3, 1990
PubMed

Insights

Ventricular arrhythmias are common in left ventricular hypertrophy, likely due to fibrosis. Antiarrhythmic therapy might reduce mortality in severe cases, though further study is needed.

Area of Science:

  • Cardiology
  • Pathophysiology

Background:

  • Left ventricular hypertrophy (LVH) is associated with frequent ventricular arrhythmias.
  • The underlying mechanisms of these arrhythmias are not fully understood.

Purpose of the Study:

  • To investigate the relationship between left ventricular hypertrophy and ventricular arrhythmias.
  • To explore potential therapeutic strategies for managing arrhythmias in LVH.

Main Methods:

  • The study reviewed existing experimental and human data on ventricular arrhythmias in LVH.
  • Analysis focused on the role of hypertrophy-related fibrosis versus other potential causes.

Main Results:

  • Ventricular arrhythmias in LVH appear primarily linked to the hypertrophic process and associated fibrosis.
  • Coronary artery disease and hypokalemia were less likely causative factors.

Conclusions:

  • Fibrosis associated with left ventricular hypertrophy is a key factor in ventricular arrhythmias.
  • Antiarrhythmic therapy may offer mortality benefits in selected hypertensive patients with severe LVH, warranting further investigation.

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