A 72-year-old diabetic man was diagnosed with acute myocardial infarction of the anterior wall and underwent emergency off-pump coronary artery bypass grafting. He was diagnosed with ventricular septal perforation(VSP) 3 days after the operation. We urgently performed surgical repair of VSP with "extended sandwich patch technique through right ventriculotomy". There was no shunt recurrence. This technique is considered to offer safe, simple and leak-free repair even in an acute phase of VSP.
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