进口机械瓣替换22例，进口生物瓣替换2例。
Mechanical valves were used in 22 cases, and bioprothetic valves in 2 cases.
目的总结115例生物瓣和机械瓣置换术的临床经验。
Objective This article summarized the clinical experience of 115 patients with biological and mechanical valve replacement.
对机械瓣替换的儿童常规应用华法林抗凝能取得良好的远期效果。
Routine use of warfarin for anticoagulation in mechanical valve replacement children has proved safe and feasible in the long run.
机械瓣使用时间长于组织瓣膜，但是它增加了其它并发症的风险。
Mechanical valves last longer than tissue valves, but they increase the risk of other complications.
结论：低强度抗凝使机械瓣置换术后患者凝血激活受到明显抑制。
Conclusion: Low intensity anticoagulation has significant inhibition against blood coagulation activation in patients with mechanical heart valve prostheses.
目的评价人工机械瓣功能障碍彩色多普勒超声心动图的诊断价值。
Objective To review the value of echocardiography in diagnosis of mechanical prosthetic valve dysfunction.
ZAHARA研究中，机械瓣对产妇和新生儿并发症均有预测价值。
In the ZAHARA study, mechanical valve prosthesis predicted both maternal and neonatal complications.
目的观察三维超声心动图(3de)测定机械瓣瓣口面积的可行性。
Objective To determine the feasibility of three dimensional echocardiography (3de) in assessment of mechanical prosthetic valve areas.
结论双叶机械瓣对二尖瓣置换术患者的血流动力学影响优于倾斜碟瓣。
Conclusion Bileaflet valve has a better hemodynamic influence than tilting disk valve in on patients with replacement of mitral valve.
发生并发症有机械瓣膜功能障碍、瓣周漏、溶血、栓塞、感染性心内膜炎发生。
The main complications were valve mechanical malfunction, peri-prosthetic leak, hemolysis, thromboembolism and infective endocarditis.
并发症有血栓栓塞、机械瓣膜功能障碍、瓣周漏、溶血、机械瓣膜感染性心内膜炎。
The main complications were thromboembolism, valve mechanical malfunction, peri prosthetic leak, hemolysis and SBE.
目的：研究机械瓣替换术后患者血浆D-二聚体动态变化规律，以指导术后抗凝治疗。
Objective:To study the dynamic changes of plasma D dimer in patients undergoing cardiac valve replacement with mechanical prosthesis, and to guide postoperative anticoagulant therapy.
风湿性心脏病二尖瓣人工机械瓣替换术后合并慢性心房颤动37例，给予同步电复律。
In 37 patients with atrial fibrillation after replacement of mitral valve (mechanical), electrical conversion was used with energy of 100-200 watt-sec.
部分病人还会因为抗凝药物使用不当而出现出血、栓塞、机械瓣功能失灵，甚至心力衰竭等并发症。
Because of improper taking anticoagulant drugs, some patients will suffer hemorrhage, embolism, function failure of mechanical valve, or even heart failure and other complications.
作者提出了一种顺向双叶机械瓣的设计模型，并用有限体积法对这种模型进行流场和剪应力分布的数值模拟。
The author based on the above results designed a model of downstream direction bileaflet mechanical valve and used finite bulk method to calculate the velocity and shear stress profiles of this valve.
机械与生物假体在50- 69岁年患者主动脉瓣置换术。
Aortic valve replacement with mechanical vs. biological prostheses in patients aged 50-69 years.
作者应用机械应变式测力传感数字显示装置，对减轻钙化的化学改性方法处理的猪主动脉瓣和牛心包组织进行了机械强度测试。
The Mechanical properties of the cardiac bioprostheses (porcine and bovine pericardium), which were prepared with methods of reducing calcification, were determined by a tensile testing device.
作者应用机械应变式测力传感数字显示装置，对减轻钙化的化学改性方法处理的猪主动脉瓣和牛心包组织进行了机械强度测试。
The Mechanical properties of the cardiac bioprostheses (porcine and bovine pericardium), which were prepared with methods of reducing calcification, were determined by a tensile testing device.
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