Reoperation for acquired discrete subaortic membrane and multivalvular dysfunction after mitral valve replacement
Indian Journal of Thoracic and Cardiovascular Surgery, cilt.41, sa.10, ss.1483-1487, 2025 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 41 Sayı: 10
- Basım Tarihi: 2025
- Doi Numarası: 10.1007/s12055-025-01995-8
- Dergi Adı: Indian Journal of Thoracic and Cardiovascular Surgery
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
- Sayfa Sayıları: ss.1483-1487
- Anahtar Kelimeler: Discrete subaortic membrane, Mitral valve replacement, Tricuspid valve insufficiency, Left ventricular outflow tract obstruction, Reoperation
- Sağlık Bilimleri Üniversitesi Adresli: Evet
Özet
A 57-year-old female patient presented to our outpatient clinic with complaints of anginal chest pain. She had a history of mitral commissurotomy and later mechanical mitral valve replacement via a robotic surgical approach due to rheumatic heart disease. On physical examination, a pansystolic murmur at the apex and an arrhythmic mechanical heart sound were noted. Transesophageal echocardiography (TEE) revealed severe tricuspid valve insufficiency, pulmonary hypertension, moderate to severe aortic stenosis, acquired discrete subaortic membrane (DSM), a paravalvular leak with mild insufficiency in the mechanical prosthetic mitral valve, and non-obstructive pannus on the left ventricular side. The patient underwent reoperation, including DSM resection, aortic and tricuspid valve replacement, and paravalvular leak repair. Postoperative recovery was uneventful. Acquired DSM following mitral valve replacement (MVR) is a rare but increasingly recognized entity. The underlying mechanism may involve postoperative hemodynamic alterations, excessive leaflet preservation, or residual fibrosis. Extended myectomy techniques may offer a more durable solution in selected cases, reducing the risk of recurrence and reoperation.