prosthetic valves

pros·thet·ic valves

valves used to replace human valves. They are divided into mechanical and tissue valves. The tissue is divided into homografts and heterografts.
References in periodicals archive ?
IE remains a frequent disease with constantly changing aspects and highly variable clinical picture, partly due to an increased frequency of intravenous drug users; a more frequent use of invasive procedures involving intravenous devices, HIV-positive patients, heart surgery with prosthetic valves and pacemaker implantation.2 In our patients, there were no HIV positivity and history of intravenous drug abuse.
In an afebrile patient with no history of prosthetic valves or materials isolated intramyocardial abscess formation is very unusual, despite the relatively high prevalence of bacteremia.
"Statins definitely improve the healthy ratio, but it hasn't been thoroughly studied to see if they improve the longevity of prosthetic valves," says Cleveland Clinic cardiologist Stephen Ellis, MD, adding that a 2003 study suggests that statin therapy may help prolong the life of prosthetic heart valves.
The chapters are organized by anatomic site and pathologic process and include all conditions of the heart and blood vessels that may be encountered in clinical practice, with chapters on iatrogenic pathology, coronary stents, bypass grafts, prosthetic valves, and the effects of cardiovascular interventions, along with discussion of the limitations and biases of various classification systems and how pathologists should use them in different diagnostic settings.
(9) Prosthetic valve IE occurs in 1 to 4% of valve recipients in the first year following implantation, and 1 percent per year afterwards, (1) with the total number of cases likely to expand in the future, with 100,000 prosthetic valves implanted annually in the United States.
Within this structure, she goes on to explain such aspects as clinical indications and quality assurance, ventricular diastolic filling and function, valvular stenosis, prosthetic valves, endocarditis, diseases of the great arteries, the adult with congenital heart disease, and intra-operative trans-esophageal echochardiography.
Fifty-four (10.5%) of these adults required reoperation and valve replacement because of failed prosthetic valves. Forty (74.1%) of the explanted valves were bioprostheses, and 14 (25.9%) were allografts.
The guidelines also clarify the use of blood thinners in pregnancy, recommending continuous anticoagulation in all pregnant women with mechanical prosthetic valves. Up to 36 weeks' gestation, the therapeutic choice of continuous dose-adjusted or intravenous subcutaneous unfractionated heparin, dose-adjusted low-molecular-weight heparin, or warfarin should be discussed fully.
This includes haemodynamic data from a wide range of brands and sizes of prosthetic valves. The chapter on new developments may lead some to find out what those new software upgrades were all about.
Five patients had an infected mitral valve; 4 of the 5 had prosthetic valves. Our patient had mitral and aortic endocarditis.
The three most common reasons for anticoagulation were prosthetic valves, Fontan procedure, and Kawasaki disease.
However, this study was a retrospective case series, and there have been no controlled trials to guide management of thromboembolic risk in pregnant patients with prosthetic valves.