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Cardiac free wall rupture after acute myocardial infarction. Clinical and pathological analysis
Insights
Cardiac free wall rupture after acute myocardial infarction (AMI) occurred in 30.6% of autopsy cases. Early diagnosis and management are crucial for preventing this fatal complication.
Area of Science:
- Cardiology
- Pathology
Background:
- Cardiac free wall rupture is a severe complication of acute myocardial infarction (AMI).
- This study analyzes autopsy cases to understand the incidence and characteristics of cardiac rupture post-AMI.
Purpose of the Study:
- To report clinical and pathological findings in autopsy cases of cardiac free wall rupture after AMI.
- To determine the incidence and risk factors associated with cardiac rupture following AMI.
Main Methods:
- Retrospective analysis of 15 autopsy cases with confirmed cardiac free wall rupture after AMI.
- Review of clinical data, electrocardiograms (ECGs), and pathological findings.
Main Results:
- Cardiac free wall rupture occurred in 30.6% of AMI autopsy cases between 1958-1979.
- Most patients were male, aged over 60, with a first AMI and a history of hypertension.
- Rupture typically occurred within 7 days of AMI onset, often presenting with specific ECG abnormalities and cardiac arrest.
Conclusions:
- Effective prevention strategies include early diagnosis, pain and vomiting control, blood pressure management, and adequate bed rest.
- Prompt recognition and management of AMI complications like cardiac rupture are vital for improving patient outcomes.
Abstract:
Clinical and pathological findings in 15 autopsy cases, 13 males and 2 females, confirming cardiac free wall rupture after AMI were reported. The incidence is 30.6% of all autopsy cases of AMI in Chinese PLA General Hospital from 1958 to 1979. The ages ranged from 46 to 79 years, 10 being above 60 years. For 73.3% it was the first AMI and 66.7% of the patients had a history of hypertension. Thirteen of the 15 patients died within 5 days after the onset of AMI and another 2 within 7 days. When the cardiac rupture occurred, the ECG generally showed bradycardia, AV-junctional rhythm, III degrees AV block or isorhythmic ventricular rhythm and cardiac arrest. Both the gross and microscopic AMI were examined in 13 cases. All of them had a septal infarct, but only 2 had an ECG diagnosis. Of the 6 patients with inferior MI on ECG, 5 had right and left coronary lesions worse than grade III. The effective prevention of cardiac rupture consists of early diagnosis, control of chest pain and vomiting, prevention or treatment of hypertension or hypotension and 1 to 2 weeks of bed rest after the onset of AMI.