Minute ventilations of 18 amateur and seven professional pilots were measured during 58 flights in light aircraft. The values were highest around take-off, falling during level flight and sometimes rising to a lesser extent during approach and landings. Amateurs had higher ventilations than professionals, non-current pilots higher than current fliers, the first flight of the day stimulated higher ventilations than subsequent flights. These findings suggest a relationship to anxiety, but nine out of ten pilots on whom end-tidal pCO2 measurements were made, developed no hypocapnia. The explanation appears to be the production of increased static muscle tension with a corresponding increase in O2 consumption and CO2 production. One pilot lowered his alveolar pCO2 to 27 mm. Hg during climb. It is postulated that he might have been unduly vulnerable to some additional respiratory stimulus. (Author)


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    Title :

    Hyperventilation in Aircraft Pilots


    Contributors:
    T. M. Murphy (author) / W. A. Young (author)

    Publication date :

    1968


    Size :

    4 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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