Abstract
I REALISE that Dr. Stocks, when making his initial assumption that the energy expended by the heart per minute was proportional to the product of the volume of blood expelled at each systole, the number of beats per minute and the pulse pressure, intended this assumption to apply merely to the relationship of the mean values of these factors in large groups of individuals. I do not see, however, how this makes the assumption any the more justifiable. The real point at issue is, as Dr. Stocks himself mentions in his letter, whether the pulse pressure is a factor in the expression for work done.
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Blood Pressure in Early Life. Nature 115, 302 (1925). https://doi.org/10.1038/115302a0
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DOI: https://doi.org/10.1038/115302a0
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