New PDF release: Heart Valve Surgery: An Illustrated Guide

By Jan Dominik, Pavel Zacek

The purpose of this ebook is to offer a richly illustrated compendium of the current wisdom with regards to middle valve surgical procedure, in line with the medical services of the authors in addition to the latest therapy modalities. The authors thank Dr. Alireeza Matloobi from the Mayo health center for his assist in preparating the e-book.

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Extra info for Heart Valve Surgery: An Illustrated Guide

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A variety of heart valves have been designed on the principle of the tilting disc, with differences in the disc housing and the achieved angle of tilting. Precise knowledge of the tilting angle in monodisc and bileaflet valves is important for eventual diagnostics of the valve failure. Discs are radioopaque and therefore fluoroscopy imaging can confirm their normal mobility or diagnose restricted range of motion, or even complete occluder blockade. 9 Disc valve Björk–Shiley. a Standard type with flat disc.

7). The struts and the ring were covered with polypropylene into which endothel grew within several weeks or months after implantation. Thereby, the whole housing of the artificial valve was endothelialized and, except for the ball, blood did not contact a foreign surface. Expected decrease in incidence of thromboembolic events and reduction of hemolysis were in fact achieved but remained limited to the first months or few years after implantation. 7 a Cloth-covered caged-ball valve Starr–Edwards (aortic model 2320).

Due to these drawbacks, the non-tilting disc valves fell into disuse and were replaced by modern tilting disc valves. Tilting monodiscs were the most-often implanted valves in the 1970s and 1980s. In Europe, the most commonly used valves were the Björk–Shiley valves. The first model of this valve was introduced into clinical practice in 1969. It had a flat delrin disc, which tilted up to 60° [17]. 9a) with pyrolytic carbon flat disc tilting up to 60°. 9b) with significantly improved hemodynamic parameters was introduced.

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Heart Valve Surgery: An Illustrated Guide by Jan Dominik, Pavel Zacek


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