Interdiscip Cardiovasc Thorac Surg. 2026 Mar 12;41(3):ivag065. doi: 10.1093/icvts/ivag065.

ABSTRACT

OBJECTIVES: Pseudoaneurysms of the mitral-aortic intervalvular fibrosa are relatively rare but are reported as a complication after aortic or mitral valve surgery.

CASE: We present a case of pseudoaneurysm of the Mitral-aortic intervalvular fibrosa (P-MAIF) 8 months after aortic valvuloplasty with external suture annuloplasty. Intraoperative findings revealed a knot of the expanded polytetrafluoroethylene (ePTFE) suture used during annuloplasty in the left ventricular outflow tract. ePTFE suture penetrated the MAIF, wherein the needle hole formed the orifice of the P-MAIF. Patch closure using bovine pericardium and aortic valve replacement were performed. Three years after the operation, no recurrence was observed.

CONCLUSIONS: Prevention requires a thorough understanding of the anatomy, precise suturing techniques, and gentle tissue handling.

PMID:41819552 | PMC:PMC12981910 | DOI:10.1093/icvts/ivag065