Process for determining a patient's circulatory fill status
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United States of America Patent
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Jun 18, 1996
Grant Date -
N/A
app pub date -
Oct 31, 1994
filing date -
Apr 30, 1992
priority date (Note) -
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Abstract
A process and a device for determining a patient's circulatory fill status, particularly the global end-diastolic volume of the heart (GEDV), intrathoracic blood volume (ITBV), pulmonary blood volume (PBV), extravascular lung water volume (EVLW), and/or global cardiac function index (CFI) by means of thermo-dilution; with this process intrathoracic thermo-volume (ITTV) and pulmonary thermo-volume (PTV), for example, are obtained and the global end-diastolic volume of the heart (GEDV) is determined from the equation GEDV=ITTV-PTV. The other volumes can be calculated by means of this parameter, which is specific for the fill status of the heart, as well as other species-specific characteristics (a, a', b, b').
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