Effects of Oxides of Nitrogen,Carbon Monoxide and Photochemical Oxidants on the ECG During Exercise and on Cardiopulmonary Function.

摘要

The effect on arterial blood oxygenation of exposure to 0.2ppm ozone in purified air for two hours,with intermittent light exercise and heat stress was assessed. Twelve healthy,volunteer subjects had blood gases measured before and during exposure through the use of an in-dwellng cannula in the brachial artery. Six of these and six others underwent separate studies in which blood-gas measurements were made on arterialized blood collected from the earlobe after application of a vasodilating agent. No evidence for an adverse effect of ozone on arterial oxygenation was found. These results fail to confirm a previous report that exposure to 0.1ppm ozone significantly disturbed arterial oxygenation.