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Use of the Anaerobic Threshold for Evaluating Various Total Artificial Heart Control Algorithms in Calves
Author(s) -
Yozu R.,
Shimomitsu T.,
Jacobs G.,
Watanabe T.,
Morimoto T.,
Stacy G.,
Nosé Y.
Publication year - 1985
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 - 10.1111/j.1525-1594.1985.tb04392.x
Subject(s) - artificial heart , anaerobic exercise , algorithm , mathematics , medicine , cardiology , physiology
In the total artificial heart (TAH) project, choosing the best control mode is an important factor in the design of a completely implantable TAH. Four different control modes for the TAH were evaluated in the same calf using the anaerobic threshold (AT) as an assessment of aerobic capacity, where AT was defined as the oxygen consumption (vo 2 ) at which the relationship between blood lactate measurements and vo 2 became nonlinear during progressive treadmill exercise. This new approach tests the integrated response of the central, peripheral, and metabolic regulatory mechanisms to physiological workloads. Preliminary data showed AT in the left master alternatively ejecting mode to be slightly higher than in the other three modes.