Results 171 to 180 of about 11,854 (211)

Carboxyhemoglobin Levels in Banked Blood

Chest, 1984
To determine the prevalence of carboxyhemoglobin levels in banked blood exceeding Air Quality Standards (level of carboxyhemoglobin greater than 1.5 percent), we analyzed banked blood for the level of carboxyhemoglobin from 101 randomly selected samples. Of 101 units of banked blood, 49 (49 percent) had carboxyhemoglobin levels greater than 1.5 percent,
W S, Aronow, W J, O'Donohue, J, Freygang, M H, Sketch   +3 more
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Temporal Variation of Carboxyhemoglobin Concentrations

Archives of Environmental Health: An International Journal, 1969
Carboxyhemoglobin concentrations ([COHb]) were measured in 15 subjects by analysis of alveolar air samples collected at two-hour intervals during waking hours on seven consecutive days. Overall mean values were 3.80% COHb for five cigarette smokers and 1.64% COHb for ten nonsmokers. Analysis of the results indicates that long-term average [COHb] can be
P M, McIlvaine, W C, Nelson, D, Bartlett
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CARBOXYHEMOGLOBIN LEVELS AS AN INDEX OF HEMOLYSIS

Pediatrics, 1971
Carbon monoxide (CO) and bilirubin are formed in equimolar amounts during the catabolism of heme. In demonstrating increased endogenous CO formation from accelerated hemolysis it is important to separate out the effect of variable exogenous CO exposure.
R R, Engel, F L, Rodkey, C E, Krill
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Carboxyhemoglobin and the Access to Oxygen

Archives of Environmental Health: An International Journal, 1973
Carboxyhemoglobin (COHb) alters the oxyhemoglobin dissociation curve in such a manner that oxygen is released to the tissues with great difficulty and at a lower oxygen tension. The known effects on heart and brain of breathing .Sow concentrations of carbon monoxide are primarily related to this leftward shift and perhaps also to combination with ...
Stephen M. Ayres, Stanley Giannelli, Hiltrud Mueller   +2 more
openaire   +1 more source

Determining P50 in the presence of carboxyhemoglobin

Journal of Applied Physiology, 1978
A method is proposed, using mathematical solutions to the Roughton-Darling analysis, that theoretically can correct the measurements used for P50 determinations, whenever HbCO is present in blood, either initially or after equilibration. The resulting P50 is calculated in a “CO-free” state, independent of the actual presence of HbCO.
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Carboxyhemoglobin and P50 in Pregnancy

Anesthesiology, 1988
W, Hasibeder, M, Haisjackl, S, Klaunzer, H, Sparr   +3 more
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Carboxyhemoglobin Levels-Reply

JAMA: The Journal of the American Medical Association, 1975
In Reply.— The criticism by Radford, while provocative, fails in its mission because it does not deal scientifically with several critical factors essential to the correct interpretation of the COHb survey data. Dr. Radford advances the hypothesis that the mean COHb saturation values reported from our survey of approximately 15,000 nonsmoking blood ...
openaire   +1 more source

Mathematical models for carboxyhemoglobin

Atmospheric Environment (1967), 1980
Abstract This paper describes a non-linear model for blood COHb fraction as a function of a subject's activity level, individual physiological parameters, and individual time-variable exposure to carbon monoxide. The computer solution of the model fits data on smokers and non-smokers. The simpler models of Ott and Mage (1978) and Venkatram and Louch (
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Carboxyhemoglobin

2022
openaire   +1 more source

Carboxyhemoglobin Levels

JAMA: The Journal of the American Medical Association, 1975
  +4 more sources