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find Keyword "心瓣膜疾病" 3 results
  • Progress in Perioperative Treatments of Cardiac Valve Replacement during Pregnancy

    Abstract:  There is a 1% - 4% incidence of cardiac disease in pregnancy, and rheumatic heart disease is the most common diagnosis. On the condition that medical treatment is inefficacious, an open heart surgery should be performed. Because of the changes in physiological functions, there is a major difference between pregnant patients and the general population in perioperative management of valve replacement. Now , the pregnancy is not an absolute contraindication for cardiopulmonary bypass, though the incidence of mortality and birth defects remains high. It is helpful in decreasing complications and increasing survival rate by improving themethods of cardiopulmonary bypass, postoperative monitoring, anticoagulation etc. In this article, the progress in t reatments of perioperative period of cardiac valve replacement during pregnancy is reviewed.

    Release date:2016-08-30 06:08 Export PDF Favorites Scan
  • 风湿性心瓣膜病伴心房颤动546例临床分析

    目的 总结风湿性心瓣膜病合并心房颤动的发病特点和外科治疗经验。 方法 回顾性分析1998年12月至2004年11月期间收治的546例风湿性心瓣膜病合并心房颤动患者的临床资料,其中行二尖瓣置换术383例,主动脉瓣置换术5例,二尖瓣和主动脉瓣双瓣膜置换术158例。在心脏不停跳下手术459例,常规体外循环心脏停搏下手术87例;术中同期行改良Cox迷宫III型手术13例,左心房折叠术45例,三尖瓣成形术245例。 结果 全组患者均顺利完成手术,体外循环时间59~219min。术后早期死亡10例(1.83%, 10/546) ,死于多器官功能衰竭和急性呼吸窘迫综合征。术后早期发生血色素尿11例,早期二次开胸探查止血7例,瓣周漏2例,均经相应的处理治愈。术后随访387例,随访时间1年,随访结果:窦性心律自动转为心房颤动17例,未接受迷宫手术由心房颤动转为窦性心律12例,13例接受迷宫手术患者术后心房颤动均转为窦性心律。远期死亡2例,分别死于出院后18个月和23个月。其余患者无严重的出血和血栓栓塞并发症发生。 结论 风湿性二尖瓣关闭不全较二尖瓣狭窄更易引发心房颤动,但发生左心房血栓的几率减小,浅低温心脏不停跳心瓣膜置换术结合双心房迷宫手术可作为治疗心瓣膜病合并心房颤动的一种有效手术方法。

    Release date:2016-08-30 06:16 Export PDF Favorites Scan
  • 用培养人脐静脉内皮细胞法观察体外循环对内皮细胞的损伤作用

    目的 采用体外培养的人脐静脉内皮细胞(HUVEC),观察体外循环(CPB)后人体炎性血浆对内皮细胞(EC)的影响. 方法 选取风湿性心瓣膜病行人工瓣膜置换术患者20例,取不同时间点的CPB血浆.将已培养好的HUVEC随机分为4组,对照组:加入正常培养基;Ⅰ组:加入CPB 45分钟的血浆;Ⅱ组:加入CPB 90分钟的血浆;Ⅲ组:加入CPB 90分钟血浆+抑肽酶.观察未贴壁悬浮EC、组织型纤活酶激活物(t-PA)功能、EC分泌血小板颗粒膜蛋白-140(GMP-140) 、6-酮-前列腺素F1α(6-K-PGF1α)和乙酰胆碱刺激EC合成NO的变化. 结果 悬浮细胞数和t-PA,Ⅱ组和Ⅲ组显著高于对照组,Ⅲ组与Ⅱ组比较显著降低(P<0.01).各组间GMP-140差别均无显著性意义.6-K-PGF1α,Ⅰ组、Ⅱ组和Ⅲ组均显著高于对照组,Ⅲ组与Ⅱ组比较显著降低(P<0.05).NOⅠ组比对照组显著升高,Ⅱ组比对照组显著降低;Ⅲ组与Ⅱ组比较显著升高(P<0.05). 结论 CPB可激活或损伤EC,抑肽酶可减轻此作用,用培养的HUVEC研究CPB损伤EC的机制是一种可行的方法.

    Release date:2016-08-30 06:32 Export PDF Favorites Scan
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