Related Experiment Video
Updated: Jan 21, 2026

Left Coronary Artery Ligation: A Surgical Murine Model of Myocardial Infarction
Published on: August 9, 2022
[Giant Right Coronary Artery Aneurysm Causing Acute Myocardial Infarction;Report of a Case]
Akinori Tamenishi1, Yasuyuki Fujimoto, Chikao Teramoto
1Department of Cardiovascular Surgery, Yokkaichi Municipal Hospital, Yokkaichi, Japan.
Insights
A giant right coronary artery aneurysm caused a heart attack in a 59-year-old man. Surgical repair, including aneurysm removal and bypass grafting, was necessary to prevent life-threatening complications.
Area of Science:
- Cardiology
- Vascular Surgery
Background:
- Coronary artery aneurysms, particularly giant ones, are rare vascular abnormalities.
- These aneurysms can lead to severe cardiac events, including myocardial infarction.
Observation:
- A 59-year-old male presented with syncope and was diagnosed with acute myocardial infarction.
- Coronary angiography revealed a giant aneurysm in the mid-right coronary artery.
Findings:
- The patient underwent successful aneurysmectomy and coronary artery bypass grafting to the posterior descending artery.
- Giant coronary artery aneurysms pose a risk of spontaneous rupture or fistula formation.
Implications:
- Prompt surgical intervention is crucial for managing giant coronary artery aneurysms.
- Surgical repair can prevent potentially fatal cardiac complications and improve patient outcomes.
Abstract:
We report a case of giant right coronary artery aneurysm causing acute myocardial infarction. A 59-year-old man presented with syncope and referred to our hospital in ambulance. Electrocardiogram showed acute myocardial infarction of the right coronary artery, and emergent coronary angiography was performed. Angiography confirmed a giant coronary artery aneurysm in the mid-portion of the right coronary artery. He underwent aneurysmectomy and coronary artery bypass grafting to the posterior descending artery. Spontaneous rupture of a giant coronary artery aneurysm is rare, but critical condition such as acute myocardial infarction or fistula to heart chamber can occur. Surgical intervention is indicated for a giant coronary artery aneurysm to prevent possible life-threatening consequences in the future.
Related Concept Videos
Acute Coronary Syndrome I: Introduction
Coronary Artery Disease I: Introduction
Coronary Artery Disease II: Pathophysiology
Acute Coronary Syndrome V: Nursing Management
Coronary Artery Disease V: Interprofessional Care
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

