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Cardiac valve replacement in congestive heart failure due to infective endocarditis
Insights
Patients with infective endocarditis needing cardiac valve replacement face higher operative mortality with increased cardiac disability. Prompt valve replacement is crucial for those with aortic or mitral incompetence experiencing heart failure.
Area of Science:
- Cardiology
- Infectious Diseases
- Cardiac Surgery
Background:
- Infective endocarditis can lead to severe cardiac complications requiring surgical intervention.
- Cardiac valve replacement is a critical procedure for managing end-stage complications of infective endocarditis.
- Patient's functional cardiac class significantly impacts outcomes after cardiac surgery.
Purpose of the Study:
- To evaluate the operative mortality associated with cardiac valve replacement in patients with infective endocarditis.
- To compare outcomes between patients with and without infective endocarditis undergoing valve replacement.
- To determine the optimal timing for valve replacement in patients with infective endocarditis-related heart failure.
Main Methods:
- Retrospective analysis of 138 patients who underwent cardiac valve replacement between January 1961 and July 1974 for infective endocarditis complications.
- Stratification of patients based on cardiac functional disability (Class II, III, and IV).
- Comparison of operative mortality rates between different functional classes and with a control group without infective endocarditis.
Main Results:
- Overall operative mortality was higher in Class IV (17%) compared to Class III (7%) and Class II (8%) patients.
- Aortic valve replacement in Class IV patients had a 22% mortality rate, versus 0% in Class III and 6% in Class II.
- Operative mortality was comparable between infective endocarditis patients and non-infective endocarditis patients with similar cardiac disability levels.
Conclusions:
- Higher cardiac functional disability is associated with increased operative mortality in infective endocarditis patients undergoing valve replacement.
- Patients with aortic or mitral incompetence due to infective endocarditis require close monitoring for heart failure, especially within the first month.
- Prompt cardiac valve replacement should be considered for patients with developing or progressing heart failure, as it can rapidly become severe.
Abstract:
From January 1961 to July 1974, 138 patients underwent cardiac valve replacement because of complications of infective endocarditis. The overall operative mortality was higher in patients with Class IV cardiac functional disability (17%) than in patients with Class III (7%) or II (8%). The mortality for patients who had undergone aortic valve replacement with Class IV disability was higher (22%) than that for patients with Class III (0) or II (6%). When compared with patients without infective endocarditis who had undergone cardiac valve replacement, the operative mortality per valve replacement was approximately the same when the degree of cardiac disability was the same at the time of surgery for both groups of patients. Patients with aortic regurgitant murmurs caused by infective endocarditis should be observed closely for the onset of heart failure, especially during the first month of disease. In patients with aortic or mitral incompetence, if heart failure develops or progresses during the first month, we believe that prompt cardiac valve replacement should be considered, because even heart failure that may initially appear mild often progresses to severe heart failure during this period.