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Updated: Jun 24, 2026

Myocardial Infarction and Functional Outcome Assessment in Pigs
Published on: April 25, 2014
[Perforation due to new myocardial infarction long time; report of a case]
1Department of Cardiovascular Surgery, Gunma Prefectural Cardiovascular Center, Maebashi, Japan.
Insights
A patient developed ventricular septal perforation after percutaneous coronary intervention for coronary artery bypass grafting complications. Surgical repair with an equine pericardial patch led to successful recovery.
Area of Science:
- Cardiology
- Cardiac Surgery
- Interventional Cardiology
Background:
- A 65-year-old male with a history of coronary artery bypass grafting (CABG) presented with effort chest pain.
- Coronary angiography revealed significant stenosis in the native coronary arteries with patent bypass grafts.
Observation:
- Percutaneous coronary intervention (PCI) was performed for the native vessel disease.
- Ventricular septal perforation (VSP) occurred 9 hours post-PCI, indicated by a pulmonary to systemic blood flow ratio (Qp/Qs) of 2.6.
- Despite medical management, the patient's hemodynamics progressively worsened.
Findings:
- The patient underwent successful intracavitary repair of the VSP using an equine pericardial patch with felt pledgets.
- Post-repair, the patient experienced an uneventful recovery, including early extubation and weaning from intra-aortic balloon pumping.
Implications:
- This case highlights a rare but serious complication of PCI in patients with prior CABG.
- Successful surgical management of post-PCI VSP is feasible and can lead to favorable outcomes.
- Emphasizes the importance of prompt diagnosis and multidisciplinary approach in managing complex cardiac emergencies.
Abstract:
A 65-year-old man was admitted to the hospital because of effort chest pain, 8 years after he received coronary artery bypass grafting [CABG: left internal thoracic artery (LITA) to left anterior descending artery (LAD), saphenous vein graft (SVG) to first diagonal branch (D1) and SVG to postero-lateral branch (PL)]. Emergent coronary angiography revealed right coronary artery occlusion with well patent bypass grafts. Percutaneus coronary intervention (PCI) was performed successfully, but 9 hours later, ventricular septal perforation (VSP) was occurred. Swan-Ganz catheter revealed that pulmonary to systemic blood flow ratio (Qp/Qs) was 2.6. In spite of intensive medical care, his hemodynamics was gradually exacerbated. Subsequent intracavitary repair with equine pericardial patch, sutured using interrupted mattress sutures with felt pledgets, was performed. He had an uneventful recovery thereafter, extubated and weaned from an intra-aortic balloon pumping at the 1st day. He was discharged from hospital on the 27th postoperative day.
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