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Cardiac_Prosthetic_Valves__4_slides_per_page

Cardiac_Prosthetic_Valves__4_slides_per_page - BLOOD...

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ARTIFICIAL HEART ARTIFICIAL HEART VALVES VALVES Presented by: Presented by: BRIAN MCGEE NIVEDITA RAO ANSHUL SHAH Group 5 Group 5 BME 501 Dr. HSIAI NOVEMBER 28, 2007 BLOOD FLOWING THROUGH THE HEART Various parts of body Right Auricle Right Ventricle Lungs via Pulmonary Vein Tricuspid valve Pulmonary Valve IMPURE BLOOD Left Auricle via Pulmonary Artery PURE BLOOD Left Ventricle Mitral Valve Aorta Aortic valve Various parts of body STENOSIS ° A stenotic heart valve can't open completely, so blood is pumped through a smaller-than-normal opening. ° A valve also may not be able to close completely. This leads to regurgitation (blood leaking back through the valve when it should be closed). ° A person can be born with an abnormal heart valve, a type of congenital heart defect. ° Also, a valve can become damaged by: § infections such as infective endocarditis. § rheumatic fever. § changes in valve structure in old people. TYPES OF ARTIFICIAL HEART VALVES 3 TYPES: ° CAGED BALL VALVES :- Proven to be durable but their centrally occluding design results in a larger pressure drop across the valve and higher turbulent stresses, distal to the valve. Their relatively large profile increases the possibility of interference with anatomical structures after implantation.
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  • Fall '07
  • Yamashiro,Hsiai
  • heart valve, Artificial heart valve, valve Left ventricle, ventricle pulmonary valve, stenotic heart valve

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