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[Incidence and characteristics of cardiac rhythm disorders after myocardial infarct]
Insights
Longer ECG recordings in myocardial infarction survivors reveal frequent ventricular extrasystoles. These rhythm disorders correlate with disease severity, angina, and hypertension.
Area of Science:
- Cardiology
- Clinical Electrophysiology
Context:
- Post-myocardial infarction (MI) patients are at risk for chronic heart rhythm disorders.
- Standard ECG monitoring may not fully capture the incidence of these arrhythmias.
Purpose:
- To investigate the incidence and characteristics of heart rhythm disorders in patients surviving myocardial infarction using prolonged ECG monitoring.
- To identify correlations between ventricular extrasystoles and clinical factors in these patients.
Summary:
- 130 myocardial infarction survivors underwent prolonged ECG monitoring at various intervals up to 12 months post-MI.
- Prolonged ECG recordings revealed rhythm disorders in 72.2% of patients at rest and 66.7% during exercise.
- Ventricular extrasystoles were prevalent, occurring in 62.6% (rest) to 66.7% (exercise) of examined patients.
- Higher incidence of ventricular extrasystoles was associated with distinct ECG changes, angina pectoris, and elevated blood pressure (≥140/90 mmHg).
Impact:
- Prolonged ECG monitoring provides a more precise assessment of arrhythmias in chronic ischemic heart disease.
- Findings highlight the clinical significance of ventricular extrasystoles as a marker for adverse outcomes in MI survivors.
- Identifies specific patient subgroups (e.g., those with angina, hypertension) at higher risk for ventricular arrhythmias post-MI.
Abstract:
In the course of 1 year 130 patients were examined who had survived myocardial infarction and were alive 2 months after the onset of the disease and were included into the Myocardial Infarction Registry. After 2,3,6,9 and 12 months ECG of various duration was recorded. The prolongation of ECG recording permits to give a more precise characteristics of the incidence and nature of the rhythm disorders observed in chronic ischaemic heart disease patients. Repeated heart rhythm examinations at rest during 1 hour, or during physical exercises (bicycle test) permitted to reveal rhythm disorders in 72.2--66.7% of the patients, and among them ventricular extrasystole in 62.6--66.7% of those examined, respectively. The appearance of ventricular extrasystoles correlates with the state of the patients surviving myocardial infarction A higher incidence of ventricular extrasystoles is observed in pateints with distinct tecg changes, with angina pectoris and elevated blood pressure (larger than or equal to140/90mm Hg).