NDLI: Effect of valsalva in the pulmonary prosthetic conduit valve on hemodynamic function in a mock circulatory system

Content Provider	IEEE Xplore Digital Library
Author	Tsuboko, Y. Shiraishi, Y. Yamada, A. Yambe, T. Matsuo, S. Saiki, Y. Yamagishi, M.
Copyright Year	2015
Description	Author affiliation: Dept. of PreClinical Evaluation, Tohoku Univ., Sendai, Japan (Shiraishi, Y.) \|\| Dept. of Med. Eng. & Cardiology, Tohoku Univ., Sendai, Japan (Yamada, A.; Yambe, T.) \|\| Dept. of Cardiovascular Surg., Tohoku Univ., Sendai, Japan (Matsuo, S.; Saiki, Y.) \|\| Grad. Sch. of Biomed. Eng., Tohoku Univ., Sendai, Japan (Tsuboko, Y.) \|\| Dept. of Pediatric Cardiovascular Surg., Kyoto Prefectural Univ. of Med., Kyoto, Japan (Yamagishi, M.)
Abstract	Pulmonary conduit valves are used as one of the surgical treatment methods of congenital heart diseases. We have been designing a sophisticated pulmonary conduit valve for the right ventricular outflow tract reconstruction in pediatric patients. In this study, two types of polyester grafts with or without bulging structures for the conduit valves were used and evaluated from the hemodynamic point of view focusing on the application of these conduit valves in the grown-up congenital heart failure patients. We examined valvular function in the originally developed pulmonary mock circulatory system, which consisted of a pneumatic driven right ventricular model, a pulmonary valve chamber, and an elastic pulmonary compliance model with peripheral vascular resistance units. Prior to the measurement, a bileaflet valve was sutured in each conduit. Each conduit valve was installed in the mock right ventricular outflow portion, and its leaflet motion was obtained by using a high-speed camera synchronously with pressure and flow waveforms. As a result, we could obtain hemodynamic changes in two different types of conduits for pulmonary valves, and it was indicated that the presence of the Valsalva shape might be effective for promoting valvular response in the low cardiac output condition.
Starting Page	278
Ending Page	281
File Size	771798
Page Count	4
File Format	PDF
ISSN	1557170X
e-ISBN	9781424492718
DOI	10.1109/EMBC.2015.7318354
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-25
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Valves Hemodynamics Heart Circulatory system Yttrium Shape Energy loss
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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