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Postoperative outcome in patients with accessory mitral valve tissue
Edvin Prifti1, Massimo Bonacchi, Fabio Bartolozzi
1Divisione di Cardiochirurgia, Policlinico Careggi, Firenze, Italy.
Summary
Accessory mitral valve tissue (AcMVT) can cause left ventricular outflow tract obstruction (LVOTO). Surgical mass excision of AcMVT is safe, with acceptable outcomes and minimal impact on mitral valve function.
Area of Science:
- Cardiology
- Congenital Heart Disease
- Cardiac Surgery
Background:
- Accessory mitral valve tissue (AcMVT) is a rare congenital anomaly.
- AcMVT can lead to significant left ventricular outflow tract obstruction (LVOTO).
- Understanding the classification and surgical outcomes of AcMVT is crucial.
Purpose of the Study:
- To analyze the presentation and outcomes of patients with AcMVT.
- To classify AcMVT based on intraoperative findings.
- To evaluate the safety and efficacy of surgical mass excision for AcMVT causing LVOTO.
Main Methods:
- Review of published reports and analysis of institutional cases.
- Classification of AcMVT into fixed and mobile types based on morphology.
- Assessment of surgical intervention, including mortality, morbidity, and reoperation rates.
Main Results:
- A total of 95 patients (90 reported, 5 institutional) with AcMVT were analyzed.
- Most patients presented with LVOTO, varying in severity.
- Surgical mass excision was performed in 75.5% of patients with a postoperative mortality of 8.9%.
Conclusions:
- AcMVT causing LVOTO can be safely treated with mass excision.
- Surgical outcomes are acceptable, with low mortality and morbidity.
- Careful evaluation is necessary to preserve mitral valve function post-excision.