Apparatus and method for measuring cardiac output
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United States of America Patent
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Sep 24, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1983
filing date -
Mar 7, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Updated cardiac output measurements are obtained using a reference value of cardiac output and the natural change in phase of variations in blood temperature. The reference value of cardiac output can be obtained using a thermodilution technique. The variations in blood temperature are sensed at appropriate locations, such as in the right atrium and the pulmonary artery. The temperature information is processed to provide a signal which is related to the velocity of the blood, and the signal and the reference value of cardiac output are used to provide the updated cardiac output measurement.
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