Methods : retrospective analysis the clinic materials from 152 patients who have been done heart valve replacement and 11 patients complicated mental disorder in january 2004 to august 2006 in the hospital 方法：对我院2004 . 1 ~ 2006 . 8共行心脏瓣膜置换152例，术后并发精神异常11例的临床资料进行回顾性的分析。
The thesis is about the design and manufacture of a new type of artificial heart valve . it can be divided into three main parts : construction of the artificial heart valve design , manufacture and assembly process 本论文的内容是关于一种新型的双叶人工心脏瓣膜的设计与制造，可划分为三个主要部分：人工心瓣的结构设计，制造及装配工艺。
Chicago ( reuters health ) - stem cells extracted from amniotic fluid can be induced to grow on a polymer scaffold into a fully functional human heart valve that will open and close like a native valve , swiss researchers report 芝加哥（路透卫生） -瑞士研究者报道称，分离自羊水的干细胞可以在高分子骨架上被诱导生长成为有完全功能的人心脏瓣膜，该瓣膜能够象天然的瓣膜一样开合。
The product drawings and processes are tested . the good of the thesis is reached . the thesis form an excellent base of the series design , production and research of the artificial heart valve 完成的心脏瓣膜产品图纸、工艺和工艺装备，经试制过程考核验证，是正确的和可行的，达到了论文工作的预期目标，所作的探索，为人工心瓣的系列化设计，批量生产以及进一步研究奠定了良好的基础。
This thesis is about the design and engineering analysis of a new type of bileaflet artificial heart valve . it can be divided into three main parts : theoretical calculation of the valve , computer aided design , engineering analysis 本论文的内容是关于一种新型的双叶型人工心脏瓣膜的设计与工程分析，可以划分为三个主要部分：人工心瓣的结构理论计算、计算机辅助设计以及计算机辅助工程分析。
The guidelines recommend that patients undergo evaluation and treatment before noncardiac surgery only for active heart problems like severe angina , late - stage heart failure , serious heart rhythm abnormalities ( arrhythmias ) and severe heart valve disease 指南建议，非心脏手术前需要进行评估和治疗的患者仅限于那些活动性心脏病患者，例如严重心绞痛、晚期心力衰竭、严重心律失常和重度心瓣膜病。
The main flaw with this argument is that it is made by folks who wear eyeglasses , use insulin , have artificial hips or heart valves , benefit from transplants , ride on planes , dye their hair , talk on phones , sit under electric lights and swallow vitamins 这个问题的破绽，只要看看下列这些人就知道：戴眼镜的、用胰岛素的、有人工髋骨或心瓣膜的、器官移植的、坐飞机的、染发的、讲电话的、坐在电灯下的，还有吃维他命的。
Conclusion : mitral and aortic valves were vulnerable to calcification which was the major change of heart valve in patients with crf on maintenance hemodialysis , the degree of calcification was closely related to hyperphosphoremia , secondary hyperparathyroidism and a longer period of hemodialysis 结论:慢性肾功能衰竭维持性血液透析患者心脏瓣膜病变均以钙化为主,尤以二尖瓣、主动脉瓣易发,且钙化程度与钙磷乘积、继发性甲状旁腺机能亢进和血液透析年限密切相关。
In consideration of time and budget factor , the first step is to manufacture 8 - type ( groove axle structure ) and circle bore type mechanical heart valve . here , the concentration is on the structure design , process and process equipment design , and manufacture of valve on a trial basis 考虑到时间进程和经费因素，初步选定进行8字型凹槽枢轴结构平面瓣型及圆柱孔枢轴圆孔型心瓣进行试制加工，本论文工作的重点是人工心脏瓣膜的结构设计，工艺和工艺装备设计，以及人工心脏瓣膜试制。
This study is based on the analyses of a series of different types of artificial heart valve in home and abroad . to overcome the shortcoming of existed artificial heart valve , several forms of bileaflet mechanical heart valve are developed . after a thorough comparison and analysis of the characters of these forms , some ideal structures are selected to be manufactured 本文的研究工作是对国内外诸多瓣膜产品进行深入分析研究的基础上开展的，为了克服人工心脏瓣膜存在的各种弊端，本文提出了三种结构形式的双叶瓣，并就各种结构形式的特点进行分析比较。
