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Surgical Treatment for Isolated Aortic Endocarditis: a Comparison with Isolated Mitral Endocarditis  

Hong, Seong-Beom (Department of Thoracic and Cardiovascular Surgery, Kwangju Veterans Hospital)
Park, Jeong-Min (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Lee, Kyo-Seon (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Ryu, Sang-Woo (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Yun, Ju-Sik (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
CheKar, Jay-Key (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Yun, Chi-Hyeong (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Kim, Sang-Hyung (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Ahn, Byoung-Hee (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School)
Publication Information
Journal of Chest Surgery / v.40, no.9, 2007 , pp. 600-606 More about this Journal
Abstract
Background: Infective endocarditis shows high surgical mortality and morbidity rates, especially for aortic endocarditis. This study attempts to investigate the clinical characteristics and operative results of isolated aortic endocarditis. Material and Method: From July 1990 to May 2005, 25 patients with isolated aortic endocarditis (Group I, male female=18 : 7, mean age $43.2{\pm}18.6$ years) and 23 patients with isolated mitral endocarditis (Group II, male female=10 : 13, mean age $43.2{\pm}17.1$ years) underwent surgical treatment in our hospital. All the patients had native endocarditis and 7 patients showed a bicuspid aortic valve in Group I. Two patients had prosthetic valve endocarditis and one patients developed mitral endocarditis after a mitral valvuloplasty in Group II. Positive blood cultures were obtained from 11 (44.0%) patients in Group I, and 10 (43.3%) patients in Group II, The pre-operative left ventricular ejection fraction for each group was $60.8{\pm}8.7%$ and $62.1{\pm}8.1%$ (p=0.945), respectively. There was moderate to severe aortic regurgitation in 18 patients and vegetations were detected in 17 patients in Group I. There was moderate to severe mitral regurgitation in 19 patients and vegetations were found in 18 patients in Group II. One patient had a ventricular septal defect and another patient underwent a Maze operation with microwaves due to atrial fibrillation. We performed echocardiography before discharge and each year during follow-up. The mean follow-up period was $37.2{\pm}23.5$ (range $9{\sim}123$) months. Result: Postoperative complications included three cases of low cardiac output in Group I and one case each of re-surgery because of bleeding and low cardiac output in Group II. One patient died from an intra-cranial hemorrhage on the first day after surgery in Group I, but there were no early deaths in Group II. The 1, 3-, and 5-year valve related event free rates were 92.0%, 88.0%, and 88.0% for Group I patients, and 91.3%, 76.0%, and 76.0% for Group II patients, respectively. The 1, 3-, and 5-year survival rates were 96.0%, 96.0%, and 96.0% for Group I patients, and foo%, 84.9%, and 84.9% for Group II patients, respectively. Conclusion: Acceptable surgical results and mid-term clinical results for aortic endocarditis were seen.
Keywords
Infective endocarditis; Aortic valve, surgery;
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