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Updated: Aug 11, 2025

Left Coronary Artery Ligation: A Surgical Murine Model of Myocardial Infarction
Published on: August 9, 2022
[Rupture of Left Ventricular Pseudo-false Aneurysm after Myocardial Infarction]
Akito Kuwano1, Masaru Yoshikai, Hisashi Sato
1Department of Cardiovascular Surgery, Shin Koga Hospital, Kurume, Japan.
Insights
A rare ruptured left ventricular pseudo-false aneurysm occurred three weeks after percutaneous coronary intervention for myocardial infarction. Emergency surgery using a double-patch technique successfully repaired the fragile aneurysm wall.
Area of Science:
- Cardiology
- Cardiac Surgery
- Pathology
Background:
- Left ventricular pseudo-false aneurysms are rare complications following myocardial infarction.
- Prompt diagnosis and intervention are crucial for managing ruptured aneurysms.
Observation:
- A 73-year-old female presented with shock three weeks post-percutaneous coronary intervention for acute myocardial infarction.
- Contrast-enhanced CT revealed a ruptured left ventricular aneurysm in the posterior wall.
Findings:
- Emergency surgery confirmed a ruptured, fragile aneurysm wall.
- Histopathological examination confirmed the diagnosis of a pseudo-false aneurysm, noting myocardial cells within the wall.
- The double-patch repair technique was employed due to the aneurysm's fragility.
Implications:
- The double-patch technique is an effective method for achieving hemostasis and preventing recurrence in fragile ruptured pseudo-false aneurysms.
- This case highlights the importance of considering pseudo-false aneurysms in patients presenting with shock post-myocardial infarction.
- Early surgical repair can significantly improve outcomes in cases of ruptured left ventricular aneurysms.
Abstract:
We herein present a case of ruptured left ventriclular pseudo-false aneurysm. A 73-year-old female had acute myocardial infarction due to occlusion of the left circumflex artery, and subsequently underwent percutaneous coronary intervention. Three weeks later, however, the patient suddenly fell into a state of shock. Contrast-enhanced computed tomography (CT) revealed rupture of left ventricular aneurysm, and emergency surgery was performed. A ruptured aneurysm was observed in the posterior wall, and as the wall of the aneurysm was fragile, it was repaired using double-patch technique. Histopathological examination revealed myocardial cells in the aneurysm wall, confirming diagnosis of pseudo-false aneurysm. Pseudo-false aneurysm is a rare type of left ventricular aneurysm. In cases of rupture in acute or subacute phase of myocardial infarction, when the aneurysm wall is fragile, double-patch repair technique effectively ensures hemostasis and prevents future aneurysm formation.
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