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The CarboMedics valve: experience with 1,049 implants
J M Bernal1, J M Rabasa, F Gutierrez-Garcia
1Department of Cardiovascular Surgery, Hospital Universitario Valdecilla, Universidad de Cantabria, Santander, Spain.
The Annals of Thoracic Surgery
|February 10, 1998
Summary
The CarboMedics bileaflet valve demonstrates satisfactory clinical performance, offering a low rate of complications and mortality. Its rotatability feature proved beneficial in specific surgical scenarios, enhancing patient outcomes.
Area of Science:
- Cardiology
- Biomedical Engineering
- Surgical Innovation
Background:
- Standard mechanical bileaflet valves faced limitations including lack of rotatability and structural deterioration.
- These issues contributed to valve-related complications, prompting the development of improved prostheses.
Purpose of the Study:
- To evaluate the clinical performance and safety of the second-generation CarboMedics bileaflet valve.
- To assess the utility of the valve's rotatability feature in cardiac surgery.
Main Methods:
- A prospective study involving 1,049 CarboMedics valve implantations in 859 patients between 1989 and 1994.
- Detailed follow-up data collected over 3,049 patient-years, achieving 97.1% completeness.
- Rotatability feature utilization recorded for mitral and aortic valve replacements.
Main Results:
- Hospital mortality rates varied: 6.9% (mitral), 3.4% (aortic), and 10.7% (double-valve).
- Five-year actuarial survival rates were 77.3% (mitral), 90.1% (aortic), and 79.2% (double-valve).
- Low incidences of valve thrombosis (5 episodes) and no structural deterioration were observed; freedom from reoperation and valve-related complications were favorable.
Conclusions:
- The CarboMedics valve exhibits satisfactory clinical performance with low valve-related mortality and morbidity.
- The rotatability feature demonstrated utility in cases with preserved native valves or repeat valve replacements.
- The study supports the CarboMedics valve as a reliable option for valvular heart disease treatment.