主动脉瓣置换术后有效瓣口面积的临床探究
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目录
一、中文摘要 (03)
二、英文摘要 (04)
三、正文
1、前言 (05)
2、资料与方法 (06)
3、结果 (09)
4、讨论 (20)
5、结论 (24)
6、参考文献 (25)
四、致谢 (27)
五、综述 (28)
1、正文 (28)
2、参考文献 (34)
主动脉瓣置换术后有效瓣口面积的临床研究
研究生:蓝永荣
导师:陈道中教授
摘要
目的:探讨主动脉瓣置换术后有效瓣口面积的改变规律及其改变的原因。
方法:回顾性分析我院2006年1月—2006年12月收治的患有主动脉瓣病变的,且单纯行主动脉瓣置换术的患者,共85例(其中7例失访)。随访术后1周、6个月、1年、3年、5年,并复查心脏彩超等情况,分析其主动脉瓣有效瓣口面积改变的规律以及原因。
结果:78例成功随访的患者,统计术后1周到5年超声心动图结果,主动脉换瓣术后有效瓣口面积(EOA)有逐渐减小趋势,并伴随着跨瓣压差逐渐增大。21mm瓣膜中GK瓣、Carbo瓣、St.Jude瓣、生物瓣术后1周和5年的EOA分别为:2.04±0.07 cm2和1.89±0.10cm2(P<0.001)、1.50±0.17 cm2和1.29±0.20cm2(P<0.001)、1.29±0.27 cm2和1.15±0.29cm2(P=0.03)、1.98±0.11cm2和1.99±0.01cm2(P=0.83);23mm瓣膜中术后1周和5年的EOA分别为:2.36±0.15 cm2和2.17±0.18cm2(P<.001)、1.94±0.21 cm2和1.62±0.37cm2(P<.001)、1.93±0.24 cm2和1.65±0.25cm2(P<.001)、2.32±0.15cm2和2.17±0.06cm2(P=0.16)。
结论:主动脉置换术后有效瓣口面积(EOA)有逐渐减小的趋势,改变程度与人造瓣膜类型有关,与年龄、性别、体重指数、抗凝强度等无明显相关。生物瓣几乎无明显改变,国产GK-2型机械瓣改变较小,标准Carbomedics和标准St.Jude机械瓣改变程度稍大;可能原因是各种人造瓣膜与人体组织间的生物相容性差异,导致瓣周组织增生程度不同。
关键词:主动脉瓣置换有效瓣口面积
Study of the effective orifice area(EAO)after aortic valve replacement
Abstract
Objective To find the rules and reasons of the effective orifice area(EOA) change after aortic valve replacement.
Methods From January 2006 to December 2006, 85 patients( 7 patient out of 85 was lost in the review) with aortic disease, who underwent aortic valve replacement only.Measure EOA at the time of 1 week, 6 months, 1 year, 3 years, and 5 years after aortic valve replacement by transthoracic color Doppler echocardiography. To find the rules of the EOA change and analysis of the reason leading to the change.
Results All 78 patients, the EOA tended to decrease gradually, with the increasing pressure gradients across the aortic valve. For the 21mm prosthesis of GK-2、Carbo、St.Jude and the bioprosthesis,the EOA are 2.04±0.07 cm2 and 1.89±0.10cm2(P<0.001)、1.50±0.17 cm2 and 1.29±0.20cm2(P<0.001)、1.29±0.27 cm2 and 1.15±0.29cm2(P=0.03)、1.98±0.11cm2 and 1.99±0.01cm2(P=0.83)at the time of 1 week follow-up and 5 years. Rather than 2.36±0.15 cm2 and 2.17±0.18cm2(P<0.001)、1.94±0.21 cm2 and 1.62±0.37cm2(P<0.001)、1.93±0.24 cm2 and 1.65±0.25cm2(P<.001)、2.32±0.15cm2 and 2.17±0.06cm2(P=0.16)for the 23mm prosthesis.
Conclusion The EOA tended to decrease gradually, it is relate to the type of the prosthesis, the bioprosthesis had nearly no change. And we find that it is nearly no correlation between the age, gentle,Body mass Index (BMI), anticoagulation level (INR) and the EOA change;the GK-2 double leaflet valve had little change, and the Carbomedics Std and St.Jude Std had obvious change; It may due to the different prosthesis and biocompatibility to the human body, which leads to different proliferation-like change.
Key W ords aortic valve replacement(A VR); effective orifice area(EOA).