DocumentCode :
2741081
Title :
Dynamic Response of the Pulmonary Circulation in Continuous Flow Artificial Heart Systems
Author :
Olegario, P.S. ; Yoshizawa, M. ; Tanaka, A. ; Shiraishi, Y. ; Ogawa, D. ; Hanaoka, T. ; Abe, K. ; Yambe, T. ; Nitta, S.
Author_Institution :
Graduate School of Engineering, Tohoku University, Sendai, Japan
Volume :
2
fYear :
2004
fDate :
1-5 Sept. 2004
Firstpage :
3777
Lastpage :
3780
Abstract :
Pulmonary circulation dynamics is important when considering bi-ventricular assist devices (BiVAD) or total artificial heart (TAH) systems and in investigating the mechanism of atrial collapse in order to design better control algorithms. In this study, we investigated pulmonary circulation dynamics in a continuous flow artificial heart system by performing acute tests on a mature goat. By varying the right pump speed, we were able to observe the dynamic response of the left atrial pressure (LAP) and simulate conditions that result in atrial suction. The results showed a time constant characteristic of a compliance lag in LAP response to changes in right pump output in the TAH configuration. These results may prove useful in the design of a new mock circulatory system that incorporates the dynamics of the pulmonary circulation, and in the improvement of existing control algorithms that prevent atrial wall collapse.
Keywords :
artificial heart; atrial collapse; continuous flow pump; Arteries; Artificial heart; Blood; Circulatory system; Control systems; Electromagnetic measurements; Pressure measurement; Rotation measurement; System testing; Velocity measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2004. IEMBS '04. 26th Annual International Conference of the IEEE
Print_ISBN :
0-7803-8439-3
Type :
conf
DOI :
10.1109/IEMBS.2004.1404059
Filename :
1404059
Link To Document :
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