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Updated: Aug 15, 2026
Acute Myocardial Infarction in Rats
Published on: February 17, 2011
Cardiac rupture complicating myocardial infarction
Xander H T Wehrens1, Pieter A Doevendans
1Center for Molecular Cardiology, College of Physicians and Surgeons of Columbia University, 630W 168th Street, P and S 9-401, New York, NY 10032, USA.
Insights
Cardiac rupture, a major cause of death after myocardial infarction (MI), is identified by specific symptoms and ECG changes. Transthoracic echocardiography (TTE) confirms diagnosis, with matrix metalloproteinases (MMPs) implicated in cardiac remodeling and rupture.
Area of Science:
- Cardiology
- Biomedical Engineering
Background:
- Ventricular free wall rupture is a critical complication of acute myocardial infarction (MI), leading to significant mortality.
- Risk factors include female gender, advanced age, hypertension, and primary MI.
- Clinical presentation involves recurrent chest pain, syncope, and jugular vein distension.
Purpose of the Study:
- To review risk indicators, diagnostic methods, and therapeutic strategies for cardiac rupture following acute myocardial infarction.
- To highlight the role of matrix metalloproteinases (MMPs) in cardiac extracellular matrix (ECM) remodeling and subacute myocardial rupture.
Main Methods:
- Review of clinical symptoms and electrocardiographic (ECG) signs associated with cardiac rupture.
- Emphasis on transthoracic echocardiography (TTE) as a key diagnostic tool.
- Discussion of the role of the matrix metalloproteinase (MMP) system in cardiac remodeling.
Main Results:
- Specific ECG findings like sinus tachycardia, new Q-waves, and ST segment elevation can indicate cardiac rupture.
- Transthoracic echocardiography (TTE) provides a fast and sensitive diagnosis.
- Defective cardiac remodeling, influenced by the MMP system, is implicated in subacute myocardial rupture.
Conclusions:
- Early identification of patients at risk through clinical and ECG assessment is crucial.
- Transthoracic echocardiography (TTE) is essential for confirming cardiac rupture.
- Therapeutic options include surgical intervention or conservative management with medications like beta-blockers and ACE inhibitors.
Abstract:
Rupture of the ventricular free wall is a leading cause of death in patients with acute myocardial infarction (MI). There are a number of risk indicators that are associated with cardiac rupture, such as female gender, old age, hypertension, and first MI. Typical symptoms of cardiac rupture are recurrent or persistent chest pain, syncope, and distension of jugular veins. Electrocardiographic signs may include sinus tachycardia, new Q-waves in 2 or more leads, persistent or recurrent ST segment elevation, deviation of expected evolutionary T-wave pattern, and electromechanical dissociation in end-stage cases. Once patients at risk have been identified using clinical symptoms and electrocardiographic signs, a fast and sensitive diagnostic test to confirm cardiac rupture is transthoracic echocardiography (TTE). New insights in the etiology of subacute myocardial rupture suggests that defective cardiac remodeling may predispose the heart for rupture. The matrix metalloproteinase (MMP) system has been shown to play an important role in cardiac extracellular matrix (ECM) remodeling and cardiac rupture. Current therapy of cardiac rupture consists mainly of surgery, and conservative management with hemodynamic monitoring, prolonged bed rest, beta-blockers, and angiotensin-converting enzyme (ACE) inhibitors in selected cases.
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