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Study of Left Ventricular Bypass Using Wankel Type Semipulsatile Blood Pump
Author(s) -
Mitsui Norimasa,
Fukunaga Shintaro,
Sueda Taijiro,
Matsuura Yuichiro,
Havlik Patrick,
Trinkl Jean,
Demunck JeanLuc,
Mesana Thierry,
Montiès JeanRaoul
Publication year - 1998
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1046/j.1525-1594.1998.06129.x
Subject(s) - pulsatile flow , ventricular assist device , ventricle , cardiology , hemodynamics , compliance (psychology) , medicine , blood flow , circulatory system , blood pressure , aortic pressure , pulse pressure , heart failure , diastole , artificial heart , biomedical engineering , psychology , social psychology
The influence of the Wankel type semipulsatile left ventricular assistance on hemodynamics was investigated with a computer simulation and an animal experiment. A simulation circuit was constructed to express the circulatory system. A current source was added to create a semipulsatile blood pump. The left and right ventricles were replaced by variable compliances. Left heart failure was simulated by decreasing the amount of compliance change of the left ventricle. Under the condition of heart failure when semipulsatile assist flow increased, the mean aortic pressure (AoP), tension time index (TTI), and diastolic pressure time index (DPTI) increased, and the cardiac output, pulse pressure (PP), and pulsatility indicator (PI) decreased. In an animal experiment, a Wankel type blood pump was used in a calf. With the increase of the assist flow, AoP curves became less pulsatile, and PP and PI decreased in accordance, which was predicted by the numerical simulation.