Chemistry: analytical and immunological testing – Oxygen containing – Inorganic carbon compounds
Patent
1992-04-24
1992-11-24
Johnston, Jill A.
Chemistry: analytical and immunological testing
Oxygen containing
Inorganic carbon compounds
128719, 422 56, 422 57, 422 58, 422 87, 436163, 436166, 436167, 436169, G01N 3122, G01N 33497
Patent
active
051660750
ABSTRACT:
A method is disclosed for determining whether respiratory gas is present in a gaseous sample by which the sample is brought into contact with an indicator which yields an indication within a diagnostically effective period of time of the presence in the sample of carbon dioxide in concentration of at least 2% while an indication of the presence of carbon dioxide in a sample of ambient air would be delayed beyond a predetermined period of time. The method has particular utility in determining the correct placement of an endotracheal catheter in a patient or in the detection of apnea.
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Anesthesiology, 60:613-614, 1984-The Einstein Carbon Dioxide Detector, J. A. Berman, Joseph J. Furgiuele, G. F. Marx.
Johnston Jill A.
Nellcor Incorporated
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