Surgery – Truss – Pad
Patent
1987-08-27
1990-07-17
Cohen, Lee S.
Surgery
Truss
Pad
A61B 508
Patent
active
049414763
ABSTRACT:
A method of determining the mixed venous PCO.sub.2 (PvCO.sub.2) is disclosed, the method comprising the steps of: (a) measuring the PCO.sub.2 of the gases inhaled and exhaled by the patient under controlled conditions without rebreathing; (b) causing the patient to inhale a test gas containing at least a small concentration of CO.sub.2 and continuing to measure the PCO.sub.2 of the inspired and expired gases, the patient taking at least two breaths without rebreathing; (c) determining the PCO.sub.2 of the inspired gases (P.sub.I CO.sub.2) and the end tidal PCO.sub.2 of expired gases (PECO.sub.2); (d) determing the differences between the end tidal PCO.sub.2 and inspired PCO.sub.2 under control and test conditions, and relating it to the inspired PCO.sub.2 used in the determination of the difference. This relationship can be used to calculate the mixed venous PCO.sub.2.
REFERENCES:
patent: 3507146 (1970-04-01), Webb
patent: 4221224 (1980-09-01), Clark
NASA Tech. Briefs, "Constraint Free Measurement . . . ", Spring 1981, p. 46-47.
Wessel et al., "Minicomputer . . . Gas Exchange", Computers in Cardiology, Sep. 1978, pp. 97-104.
Suzuki et al., "The Development . . . Analyzer", The Trans IECE of Japan, vol. E63, No. 11, Nov. 1980, pp. 819-820.
Cohen Lee S.
Hughes Ivor M.
Joseph Fisher
LandOfFree
Non-invasive method and apparatus for measuring mixed venous blo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-invasive method and apparatus for measuring mixed venous blo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-invasive method and apparatus for measuring mixed venous blo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-90451