Ebook Practical manual of echocardiography in the urgent setting: Part 2

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Ebook Practical manual of echocardiography in the urgent setting: Part 2

Prosthetic heart valvesKarthik Gujja1 and Vladimir Fridman2’Division of Cardiology, Department of Internal Medicine, Long Island College I lospital, N

Ebook Practical manual of echocardiography in the urgent setting: Part 2New York, USACardiovascular Diseases, New York, NY, USACHAPTER 7Prosthetic heart valves add another level of complexity to the performance of an echoc

ardiogram. There are multiple different types and multiple different echocardiographic signatures of prosthetic valves. Furthermore, many forms of pro Ebook Practical manual of echocardiography in the urgent setting: Part 2

sthetic valve malfunction exist, and ill some cases these are life threatening and must be diagnosed immediately.The types of prosthetic valves/valve

Ebook Practical manual of echocardiography in the urgent setting: Part 2

repairs are:•mechanical valves•tissue (biological) valves•valved conduits•annular rings.There are multiple mechanical valves available on the market.

Prosthetic heart valvesKarthik Gujja1 and Vladimir Fridman2’Division of Cardiology, Department of Internal Medicine, Long Island College I lospital, N

Ebook Practical manual of echocardiography in the urgent setting: Part 2d valve ring by small hinges;o opening angle 75-90°;o three orifices: one small central and two larger lateral orifices;o Normal regurgitant volume of

5-10 ml.•Single tilting disc valveso circular sewing ring;o circular disc eccentrically attached by metal struts;o opening angle 60-80°;o flow occurs Ebook Practical manual of echocardiography in the urgent setting: Part 2

through major and minor orifices.•Ball-in-cage valveo circular sewing ring;o silastic or metal ball;Practical Manual of Echocardiography in the Urgen

Ebook Practical manual of echocardiography in the urgent setting: Part 2

t Setting, First Edition. Edited by Vladimir Fridman and Mario J. Garcia.130 I Chapter 7Figure 7.1 Mechanical valves and their echocardiographic image

Prosthetic heart valvesKarthik Gujja1 and Vladimir Fridman2’Division of Cardiology, Department of Internal Medicine, Long Island College I lospital, N

Ebook Practical manual of echocardiography in the urgent setting: Part 2om Elsevier).o cage with arches;o high profile;o flow occurs around the ball;o normal regurgitant volume of 2-5 ml.The common mechanical prosthetic va

lves, and their normal regurgitation profiles, are shown in Figure 7.1.There are multiple types of tissue valves as well. Some basic characteristics a Ebook Practical manual of echocardiography in the urgent setting: Part 2

re:•Stented heterograft valveso sewing ring with three semirigid stents or struts;o trileaflet - opens to a circular orifice;

Prosthetic heart valvesKarthik Gujja1 and Vladimir Fridman2’Division of Cardiology, Department of Internal Medicine, Long Island College I lospital, N