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Article
December 1944

RATE OF INSENSIBLE PERSPIRATION (DIFFUSION OF WATER) LOCALLY THROUGH LIVING AND THROUGH DEAD HUMAN SKIN

Author Affiliations

NEW ORLEANS

From the Department of Medicine, School of Medicine, Tulane University and Charity Hospital of Louisiana, New Orleans.

Arch Intern Med (Chic). 1944;74(6):437-444. doi:10.1001/archinte.1944.00210240027005
Abstract

There are numerous methods for measuring insensible perspiration by determining total insensible loss of weight.1 Such methods serve many purposes both clinically and experimentally but have certain limitations. A method which measures insensible loss of water through localized areas of skin often fulfils some of the requirements lacking in methods that measure total insensible loss in weight. The method described by Neumann, Cohn and Burch2 measures sensible and insensible loss of water through isolated portions of the skin. These observers did not differentiate between the part of water lost insensibly through secretions of the sweat glands and that part lost through diffusion. It is the purpose of this paper to make such a differentiation.

MATERIALS AND METHODS  Loss of water through isolated areas of living skin was measured by the method previously described.3 This consisted essentially of the following procedure: Oxygen was dried by being run from

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