Carboxyhemoglobin Sources in the Metropolitan St. Louis Population

Single breath transfer factor for carbon monoxide in an asymptomatic population of never smokers.

“…These concentra-tions, as well as the gender related differences in concentration among never smokers in Norway, are in agreement with previous observations in a large population of nonsmoking blood donors in St Louis, Missouri. 26 The variation among subjects may be due to differences in concentration of carbon monoxide in the inspired air, endogenous carbon monoxide production, and exercise level. A multiple linear regression which included height, age, and haemoglobin concentration showed that the decrease in TLCO with increasing carboxyhaemoglobin concentration was of borderline significance in women and was not significant in men (table 4).…”

The Need for Representative Ambient Air Carbon Monoxide Sampling

“…The increase in COHb levels for non-smokers (as a result of exposure to ambient CO) is quite small." 4 The average COHb levels in several cities in the U. S. described in another study exhibit no correlation with the calculated "rollback" of CO concentrations reportedly needed to meet the ambient air CO standards, as shown in Table I and Table II. 5 The "rollback" method is based upon the maximum measured outdoor CO concentrations.…”

Carbon Monoxide

“…Using this approach, New Hampshire, Vermont, and the city of St Louis (Missouri) were found to have blood COHb levels in the range 1-1.5% in the early 1970s (Davis and Ganter, 1974;Kahn et al, 1974).…”