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Updated: Jun 8, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
Published on: April 25, 2014
Acute myocardial infarction and the five-chambered heart
Joel A Lardizabal1, Usman Javed, John A Ambrose
1Department of Medicine, University of California, San Francisco, Fresno, CA, USA. dr_jolar@yahoo.com
Abstract:
The case of a patient presenting with acute inferior ST-elevation myocardial infarction is described. Emergent coronary angiography of the right coronary artery revealed what appeared to be the abrupt drainage of contrast into a large, peculiar cavity or chamber. Echocardiography and cardiac computed tomography demonstrated a giant right coronary aneurysm in the right coronary artery that gave the impression of a "fifth heart chamber." The patient underwent successful surgical resection of the aneurysm. Diagnostic and treatment approaches to giant coronary aneurysms are discussed.
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