stress echocardiography in prosthetic heart valves
نویسندگان
چکیده
منابع مشابه
Prosthetic Aortic Heart Valves
In this review, the anatomy and structure of the aortic valve and its prostheses are comprehensively discussed. Cardiac anatomy and function, human heart valves and their prostheses are also extensively discussed. The current status of prosthetic heart valves along with the next generation of these devices is broadly deliberated. Ather promising options such astranscatheter technologies (percut...
متن کاملProsthetic heart valves.
The first prosthetic valve was implanted by Hufnagel in 1952 in a patient with aortic insufficiency. Since then, prosthetic valves have evolved into various mechanical and bioprosthetic shapes and sizes. Despite the excitement surrounding the current development of prosthetic heart valves, surgically implanted valves remain the mainstay of current practice, and this article discusses the hemody...
متن کاملPhotoelastic stress analysis of silastic poppets in prosthetic heart valves.
Some prosthetic heart valves with Silastic ball poppets undergo degeneration and variance. The problem is avoided with metal poppets; however, their impact can damage the cloth coverings on the struts, resulting in distorted blood flow paths. Consequently, renewed interest in mOd-cured Silastic poppets and inserts is developing. With photostress equipment, we analyzed two spherical poppet model...
متن کاملEvaluation of prosthetic heart valves by transesophageal echocardiography: problems, pitfalls, and timing of echocardiography.
Transesophageal echocardiography (TEE) is especially suitable for examination of prosthetic valves because of the proximity of the esophagus to the heart and absence of interference with lungs and ribs. This article reviews normal and abnormal morphologic characteristics of prosthetic valves such as spontaneous echocontrast, microbubbles, strands, sutures, vegetations or thrombus. Doppler echoc...
متن کاملProsthetic heart valves and pregnancy.
To the Editor: Pregnant women with mechanical heart valves are an ultrahigh-risk group, in whom all anticoagulant options pose maternal and/or fetal risks. It is unclear why the authors of the recent update1 selected 4 studies, neither the most recent nor of the highest quality, to give a warfarin embryopathy rate of 1.6%. This anomaly rate is not supported by evidence in their Table 1 (3.9% of...
متن کاملPregnancy in patients with prosthetic heart valves.
Pregnancy and delivery were analyzed in 23 women one to ten years after undergoing prosthetic heart valve replacement. The main points of management during pregnancy and delivery were cardiac management and management against thromboembolism. The functional status of the pregnant patients was grade I of the New York Heart Association criteria in eight, grade II in 13 and grade III and higher in...
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عنوان ژورنال:
archives of cardiovascular imagingجلد ۴، شماره ۱، صفحات ۰-۰
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