The effect of work on the percentage of haemoglobin and number of red corpuscles in the blood / by Walter M. Boothby and Frank B. Berry.

  • Boothby, Walter M.
Date:
[1915?]
Catalogue details

Licence: In copyright

Credit: The effect of work on the percentage of haemoglobin and number of red corpuscles in the blood / by Walter M. Boothby and Frank B. Berry. Source: Wellcome Collection.

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    In view of these findings it is evident, at least in certain sub¬ jects, that work causes a change in the oxygen carrying capacity of the blood. Therefore, in order to calculate properly the percentage saturation of the haemoglobin in the venous blood in a series of experiments being done in this laboratory on the de¬ termination of the blood flow at rest and at work, it was nec¬ essary for us to verify the above findings and to determine the order of the variation in the subject of the blood flow experiments.3 TABLE I • EXPER. NO. TIME * POSITION, PULSE RED CORPUSCLES. INCREASE per cu. mm. per cent 59 10.10 Lying down 66 5,281,000 59 10.17 Lying down after a sharp run 5,471,000 59 11.23 Lying down 72 5,611,000 59 11.34 Lying down after a second sharp run 128 6,354,000 17 60 9.30 Lying down 68 5,864,000 60 9.40 Standing after a sharp run 130 5,717,000 60 10.30 Lying down 80 5,554,000 60 10.40 Standing after a second sharp run 138 6,487,000 13 For the determination of the haemoglobin' use was made of the Haldane-Gowers haemoglobinometer and the colorimetric readings were controlled by Mr. H. F. Aitken, artist to Dr. Cushing. The number of red corpuscles was determined in the usual way by counting and taking the average of four fields. * Eefore taking the samples of blood for determining the normal or resting value, the subject sat down for about five or ten minutes and care was taken that this period was preceded by only light laboratory work. 3Boothby: A determination of the circulation rate in man at rest and at work. The regulation of the circulation. This Journal, 1915, xxxvii. i