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1、机械及生物主动脉瓣-病人选择及手术方式实施,第四军医大学西京医院心血管外科易定华，俞世强，刘金成，金振晓等2008年12月 上海,cases,19902007 西京医院心血管外科手术量情况,2007年西京医院 3225例心脏手术分布图,人工瓣膜的优缺点,优 点,结构故障少 无须再次手术,缺 点,需终身抗凝 抗凝相关并发症,优异的血流动力学无需抗凝治疗,瓣膜钙化瓣膜衰败 需再次手术,1988年5月至2008年5月西京医院 8206例患者应用10125枚人工瓣膜种类分布,总体随访率为 91.2%累及随访达 49232 病人年,90.1%,86.4%,69.1%,生物瓣置换15年随访的Kaplan-
2、Mier 生存曲线,89.2%,84.5%,68.6%,机械瓣置换15年随访的Kaplan-Mier 生存曲线,年龄 60 岁 并发房颤 有血栓栓塞的风险首次感染性心内膜炎的患者,西京医院选择人工瓣膜的原则,选择机械瓣,年龄 60 岁 不伴有房颤无血栓栓塞的风险进行三尖瓣置换时 具有生育要求的年轻女性患者,西京医院选择人工瓣膜的原则,选择生物瓣,有效开口面积指数（IEOA）=0.85 小于主动脉直径2 mm在小主动脉根患者选择19mm 的人工瓣膜，必要时根部加宽 应用瓣膜尺寸小于国外报道，与我国西部身高体重特征有关,人工瓣膜的大小选择,我院1422例主动脉瓣置换的型号分布图,主动脉瓣,成人二尖
3、瓣一般置换多为27mm瓣膜 合并左室小或者左心功能不全，应使用较小型号的瓣膜45kg以下小左室患者22例 3-12月婴儿应用19mm瓣膜3例,人工瓣膜的大小选择,我院5321例二尖瓣置换的型号分布图,二尖瓣,讨 论,推荐选择主动脉瓣小于二尖瓣4mm，如二尖瓣27mm主动脉瓣23mm；或二尖瓣25mm主动脉瓣21mm。主动脉瓣较小时，不宜置换过大二尖瓣，否则左心室负荷过重，易于出现左心功能衰竭。,二尖瓣、主动脉瓣同期置换的瓣膜匹配,讨 论,生物瓣膜钙化和衰坏较快，选择机械瓣再次手术置换较大瓣膜 小儿基本可以接受华法林抗凝治疗 应当尽量通过成形来修复,婴幼儿瓣膜置换的选择,讨 论,首次手术治疗时选
4、择的标准和非感染性心内膜炎患者相似对复发的感染性心内膜炎的患者应使用生物瓣膜在有广泛的瓣环缺损和心室主动脉分离时，采用同种主动脉根部置换,合并感染性心内膜炎的瓣膜置换选择,同期置换多个瓣膜的选择 避免使用不同种类瓣膜进行同期置换育龄妇女瓣膜置换的选择 对有生育要求的年轻女性力争进行瓣膜成形术，必要时推荐应用生物瓣膜进行瓣膜置换。,特殊情况下人工瓣膜的选择,双瓣同期置换术,四瓣膜同期置换(西京医院),二尖瓣发育不良并重度关闭不全,婴幼儿换瓣,Thank You!,Yi Dinghua,Liu Jincheng,Yu Shiqiang,Yang Jian,Jin Zhenxiao,et al,In
5、stitute of Cardiovascular disease of PLADepartment of Cardiovascular Surgery,Xijing Hospital Fourth Military Medical University,Patient Selection and Practice Patterns:Mechanical versus Bioprosthetics Aortic Valves,cases,Cardiac Operations Performed in the Department of Cardiovascular Surgery in Xij
6、ing Hospital from 1990 to 2007,1999 2000 2001 2002 2003 2004 2005 2006 2007,Distribution of different types of 3225 cardiac operations in the Department of Cardiovascular Surgery Xijing Hospital in 2007,Advantage,Disadvantage,Advantage and disadvantage of artificial valve,Life-long anticoagulation R
7、elated complications,Few structural deterioration Free from re-operation,Good haemodynamics Free from anticoagulation,Calcification Deterioration Re-operation,Distribution of 10125 artificial valves used in 8206 patients in Xijing Hospital from May,1988 to May,2008,Results,Follow-up rate was 91.2%Ac
8、cumulated follow-up time is 49232 patientsyear,90.1%,86.4%,69.1%,Kaplan-Mier Survival Curve of bioprosthesis during 15 years follow-up,89.2%,84.5%,68.6%,Kaplan-Mier Survival Curve of mechanical valve during 15 years follow-up,60 years old Comorbided with atrial fibrillation Risk factor for thromboem
9、bolismInfective endocarditis(For the first time),Principle for selection of mechanical or bioprosthetic valves in Xijing Hospital,Mechanical valve preferred,60 years old Comorbided without atrial fibrillation No risk factor for thromboembolismTricuspid valve replacement Female patients with fertilit
10、y require,Principle for selection of mechanical or bioprosthetic valves in Xijing Hospital,Bioprosthetic valve preferred,Indexed effective orifice area（IEOA）=0.85 2 mm smaller than the radius of the aortic annulus 19mm in patients with small aortic root Our sizes were smaller than that of western co
11、untries,Selection of the size for artificial valves,Aortic valve,Distribution of the size of 1422 aortic valve replaced in our hospital,Most selected mitral valve in adults is 27mm Smaller valve preferred in patients with small left ventricle or heart insufficiency22 cases of valve replacement in pa
12、tients under 45kg3 cases of 19mm valve replacement in 3-12 months old infants,Distribution of the size of 5321 mitral valve replaced in our hospital,Mitral valve,Selection of the size for artificial valves,Discussion,Aortic valve 4mm smaller than mitral valve is recommended.I.E.27mm M23mm A；25mm M23
13、mm A When the aortic valve is small,big mitral valve should be avoided.Otherwise left ventricle overload will occur,leading to left heart failure.,Match of concomitant Mitral and Aortic valve replacement,Due to the calcification and deterioration of bioprosthesis,mechanical valve is preferredNeed fo
14、r re-operationValvuloplasty should be the first choice in children Walfarin can usually be well tolerated in children,Choice of valve replacement in infants,Discussion,The criteria for first time is same to ordinary patientsFor re-occurred patients,bioprosthesis is preferredFor patients with extensi
15、ve annular defect or the detachment between ventricle and aorta,root replacement would be selected,Choice of valve replacement in patients with endocarditis,Discussion,Concomitant multi-valve replacement Avoid select valves of different typesFor young female patients with fertility require Valvuloplasty is the first choice Bioprosthesis can also be used when necessary,Choice of valve replacement in special situation,Concomitant double-valve replacement,Concomitant four-valve replacement,Congenital mitral valve insufficiency,Valve replacement in infants,Thank You!,
