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

(BQ) Part 2 book "Practical manual of echocardiography in the urgent setting" presents the following contents: Prosthetic heart valves, the great vessels, evaluation of the pericardium, specialty echocardiographic examinations, common artifacts, hommon artifacts, chest pain syndrome,. | Prosthetic heart valves Karthik Gujja1 and Vladimir Fridman2 1Division of Cardiology Department of Internal Medicine Long Island College Hospital New York USA 2Cardiovascular Diseases New York NY USA CHAPTER 7 Prosthetic heart valves add another level of complexity to the performance of an echocardiogram. There are multiple different types and multiple different echocardiographic signatures of prosthetic valves. Furthermore many forms of prosthetic valve malfunction exist and in some cases these are life threatening and must be diagnosed immediately. The types of prosthetic valves valve repairs are mechanical valves tissue biological valves valved conduits annular rings. There are multiple mechanical valves available on the market. Some of the most common types and their characteristics are Bileaflet tilting disc valves o two pyrolytic carbon semicircular discs attached to a rigid 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 valves o circular sewing ring o circular disc eccentrically attached by metal struts o opening angle 60-80 o flow occurs through major and minor orifices. Ball-in-cage valve o circular sewing ring o silastic or metal ball Practical Manual of Echocardiography in the Urgent Setting First Edition. Edited by Vladimir Fridman and Mario J. Garcia. 2013 John Wiley Sons Ltd. Published 2013 by John Wiley Sons Ltd. 129 130 Chapter 7 Figure Mechanical valves and their echocardiographic images with normal regurgitation profiles top - bileaflet middle - single leaflet bottom - ball and cage valves Reproduced from 1 with permission from 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 valves and their normal regurgitation profiles are shown in Figure . There are multiple types of tissue valves as well. Some basic .

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• Practical manual of echocardiography in the urgent setting
• The great vessels
• Prosthetic heart valves
• Evaluation of the pericardium
• Common artifacts
• Chest pain syndrome
• Ultrasound physics
• The transthoracic examination
• Transesophageal echocardiography
• Left sided heart valves
• Right sided heart valves
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