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The difficulty, in fact, we may almost say the practical impossibility, of obtaining accurate twenty-four-hour quantities of urine from female hospital patients has probably been recognized by every investigator who has attempted to conduct metabolism experiments on this class of subjects. Our own experience has been that even when under the constant supervision of competent nurses, intelligent female patients (particularly when under the influence of cathartics) will frequently lose from 5 to 25 per cent. of the daily amount of urine.
In order to overcome this difficulty we have devised a "divided pan," an illustration of which is shown. This pan, which is made of sheet copper, nickel plated, is constructed along the lines of the ordinary hospital bed pan, being 14 inches long by 9¾ inches wide; the front end is 4¼ inches high, the back 9½ inches; 6¼ inches from the front end is
FOLIN O, DENIS W. AN APPARATUS FOR THE QUANTITATIVE COLLECTION OF URINE FROM WOMEN. Arch Intern Med (Chic). 1915;XVI(2):195-196. doi:10.1001/archinte.1915.00080020049002