Antunes M J
Am J Cardiol. 1987 Feb 1;59(4):350-2. doi: 10.1016/0002-9149(87)90812-5.
The operative results of 203 aortic prosthetic valve reoperations performed in 175 patients from 1974 through 1986 were reviewed to identify groups at greater risk. Two to 4 reoperations were performed in 23 patients. The mean interval between the first and second valve procedures was 74 +/- 57 months. The most common indications for reoperation were thrombosis of mechanical prostheses (25%), degeneration of homografts (22%) and mechanical valve dysfunction (19%). Eighteen patients (9%) died. This mortality rate was significantly higher (p less than 0.05) than that of primary valve procedures performed during the same period. Mortality rates were higher among patients with prosthetic valve endocarditis (6 of 26 cases, 23%) and among those who underwent operation on an emergency basis (15 of 20, 25%). No significant correlation was found between mortality rates and the age or gender of the patients and the types of prostheses used originally.
回顾了1974年至1986年期间175例患者接受的203次主动脉人工瓣膜再次手术的手术结果，以确定高危人群。23例患者接受了2至4次再次手术。首次和第二次瓣膜手术之间的平均间隔为74±57个月。再次手术最常见的指征是机械瓣膜血栓形成（25%）、同种异体移植物退变（22%）和机械瓣膜功能障碍（19%）。18例患者（9%）死亡。该死亡率显著高于同期进行的初次瓣膜手术（p<0.05）。人工瓣膜心内膜炎患者（26例中的6例，23%）和急诊手术患者（20例中的15例，25%）的死亡率更高。未发现死亡率与患者年龄、性别及最初使用的假体类型之间存在显著相关性。
