Heart-rate-proportional oxygen consumption for constant cardiac work in dog heart.
نویسندگان
چکیده
منابع مشابه
Oxygen consumption of the completely isolated dog heart in fibrillation.
ELECTRIC induction of A'entricular fibrillation during cardiac surgery has been proposed recently, as a means of providing a quiescent organ and of diminishing the danger of air embolism. However before this procedure is adopted for routine clinical use, more should be known about its safety. Since myocardial damage may result when metabolic requirements are not met by the available oxygen, kno...
متن کاملOxygen Consumption of the Completely Isolated Dog Heart In Fibrillation
ELECTRIC induction of A'entricular fibrillation during cardiac surgery has been proposed recently, as a means of providing a quiescent organ and of diminishing the danger of air embolism. However before this procedure is adopted for routine clinical use, more should be known about its safety. Since myocardial damage may result when metabolic requirements are not met by the available oxygen, kno...
متن کاملQuantitative determination of regional oxygen consumption in the dog heart.
A micro-Fick method has been developed to measure the O2 consumption of different regions of an organ. The method was tested in isolated dog gracilis muscle and consisted of microspectrophotometric determination of arterial and venous O2 saturation in quick frozen tissue to determine O2 extraction and flow measured with 85Sr-labeled microspheres, with O2 consumption calculated from the product....
متن کاملCorrelations between heart rate and oxygen consumption in rodents.
MORHARDT, J* EMIL, AND SYLVIA S. MORHARDT. C’orrelation bafween heart rate and oxygen consumption in rodents. Am. J. Phvsiol. 221(6): 15804586. I97 1 .-Heart rates (fh , transmitted by surgically impLanted radiotelemetry transmitters) and oxygen consumption (VOW) were measured simultaneousIy from a series of rodents. Large ranges of fh and ~OZ were obtained by allowing spontaneous activity and ...
متن کاملMathematical Modeling and Expression of Heart Rate Deflection Point using Heart Rate and Oxygen Consumption
Heart rate deflection point (HRDP) can be determined through different mathematical-modeling procedures, such as bi-segmental linear regression (2SEG) or maximal distance model (Dmax). The purpose was to compare heart rate (HR) and oxygen consumption (VO2) at HRDP when using 2SEG and Dmax, and to examine their relationships with respiratory compensation point (RCP) and running performance. Nine...
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ژورنال
عنوان ژورنال: The Japanese Journal of Physiology
سال: 1990
ISSN: 0021-521X
DOI: 10.2170/jjphysiol.40.503