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[Post-infarction recurrent myocardial ischemia. Characterization with Holter ECG and exercise test]
D García Barreto1, R Valdesuso Aguilar, E Rivas Estany
1Instituto de Cardiología y Cirugía Cardiovascular, Habana, Cuba.
Archivos Del Instituto De Cardiologia De Mexico
|May 1, 1991
Summary
Postinfarction ischemia characterization revealed high rates of silent ischemic episodes during both Holter monitoring and exercise testing. Recurrent ischemia significantly increases long-term mortality risk.
Area of Science:
- Cardiology
- Internal Medicine
- Clinical Research
Background:
- Postinfarction ischemia remains a critical concern in cardiovascular disease management.
- Characterizing transient ischemic episodes is vital for risk stratification and treatment.
- Silent ischemia, often undetected, poses a significant clinical challenge.
Purpose of the Study:
- To characterize postinfarction ischemia using 24-hour Holter monitoring and exercise testing.
- To evaluate the agreement between Holter monitoring and exercise testing in detecting ischemic episodes.
- To assess the clinical significance and prognostic implications of recurrent ischemia.
Main Methods:
- Sixty-eight patients post-myocardial infarction were studied.
- 24-hour Holter monitoring was employed to detect transient ischemic episodes.
- Exercise testing was performed to assess for exercise-induced ischemia.
Main Results:
- A significant agreement was observed between Holter monitoring and exercise testing for detecting ischemia.
- The majority of ischemic episodes (87%) were asymptomatic (silent ischemia).
- Recurrent ischemia was associated with a 13.9-fold increased risk of mortality within one year.
Conclusions:
- Both Holter monitoring and exercise testing are effective in characterizing postinfarction ischemia.
- Silent ischemia is prevalent and a significant finding in postinfarction patients.
- Recurrent ischemia is a strong predictor of adverse outcomes and mortality.