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[Valve replacement in patients with huge heart]
1Beijing Heart, Lung and Vessel Medical Center.
Insights
Valve replacement in patients with enlarged hearts (cardiac-thoracic rate > 0.80) is feasible. Survivors showed improved heart function, highlighting the importance of pre- and postoperative management for myocardial preservation.
Area of Science:
- Cardiology
- Cardiac Surgery
Background:
- Enlarged heart, defined by a cardiac-thoracic (C/T) rate greater than 0.80, traditionally contraindicates valve replacement surgery.
- Limited data exists on the outcomes of cardiac valve interventions in this patient population.
Purpose of the Study:
- To evaluate the feasibility and outcomes of valve replacement and repair in patients with significantly enlarged hearts (C/T rate > 0.80).
- To identify key factors for successful surgical management in this high-risk group.
Main Methods:
- Retrospective analysis of 18 patients with enlarged hearts (C/T rate 0.81-0.97) undergoing cardiac valve surgery.
- Procedures included mitral valve replacement (11 patients), aortic valve replacement (2 patients), and tricuspid valvuloplasty (5 patients).
Main Results:
- One perioperative death occurred due to low cardiac output.
- The remaining 17 patients demonstrated improved cardiac function, with New York Heart Association (NYHA) classification improving from III or IV to II postoperatively.
- Successful valve intervention was achieved in the majority of patients.
Conclusions:
- Cardiac valve surgery in patients with enlarged hearts is achievable.
- Aggressive pre- and postoperative management strategies focused on preserving myocardial function are crucial for successful outcomes.
- Careful preoperative assessment and surgical technique are vital for managing patients with huge hearts undergoing valve surgery.
Abstract:
In general, valve replacement for patients with big heart (cardiac-thoracic rate greater than 0.80) has been considered a contraindication. Mitral valve replacement was done in 11 patients with a C/T rate of 0.81 to 0.97. In addition, aortic valve replacement was performed in 2 patients and tricuspid valvuloplasty in 5. One patient died from low cardiac output after operation. The heart function of the survivor was improved from III or IV to II degree after operation. We consider that active pre- and postoperative management for preserving myocardial function and preoperative technique are important for the successful treatment of patients with huge heart.