A NEW METHOD OF MEASURING CARDIAC RELATED PARAMETERS NON-INVASIVELY WITH SPONTANEOUS AND CONTROLLED VENTILATION

摘要

An improved method of apparatus for determining: ~, ~A, and calculating ~CO2, P~ CO2 - oxy, true P~ CO2, PaCO2, pulmonary shunt, anatomical dead space, and O2 saturation in mixed venous blood; which increases the accuracy of these determinations and calculations in relation to known methods and apparatuses and allows for full automation thereof if necessary by: i) reading FGF to a sequential delivery circuit to create two sets of data f or said determination utilizing the Fick equations; (or) ii) the P ET CO2 to PaCO2 gradient is calculated from two independently derived values in the same subject; (or) iii) utilizing the Kim-Rahn-Farhi technique a period of reducing FGF simulates complete or partial breath holding, wherein the P ET CO2 of each breath is equivalent to a sequential alveolar sample; thereby providing more relevant data to calculate desired parameters.