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Accelerated idioventricular rhythm in patients without acute myocardial infarction
Angiology
|November 1, 1979
Summary
Accelerated idioventricular rhythm (AIVR) can occur in individuals without heart disease, particularly those with central nervous system abnormalities. Further research is needed to understand its prognosis and treatment in asymptomatic patients.
Area of Science:
- Cardiology
- Neurology
Background:
- Accelerated idioventricular rhythm (AIVR) is typically associated with cardiac conditions like myocardial infarction and heart disease.
- Its occurrence in patients without known heart disease is infrequent.
Observation:
- A review of 700 Holter monitor studies identified AIVR in 7 patients without recent myocardial infarction.
- Three of these patients had no evidence of heart disease; five had central nervous system abnormalities.
Findings:
- AIVR can manifest with abrupt onset/offset, sinus rate approximation, and fusion beats.
- Exercise can accelerate AIVR, suggesting autonomic nervous system influence, similar to CNS stimulation studies in dogs.
Implications:
- The study suggests AIVR may occur in asymptomatic individuals without demonstrable heart disease.
- Further investigation into the natural history and treatment necessity of AIVR in this population is warranted.