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G. E. BURCH, M.D.; N. DePASQUALE, M.D.; ALBERT HYMAN, M.D.; A. C. DeGRAFF, M.D.

AMA Arch Intern Med. 1959;104(4):553-560.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

It has been noted previously^1-4 that a warm and humid environment increases the output of the heart. Cardiac output was measured by the direct Fick method in five volunteer subjects resting in bed in wards of the Charity Hospital during the New Orleans tropical weather of July and August, 1957.³ The cardiac output in all patients was found to be higher (mean about 50%) when they were in a warm and humid ward open to the outside weather than when in an air-conditioned and comfortable one. Because of the importance of these findings it was considered advisable to repeat these studies in five more volunteer patients during the New Orleans tropical weather of August, 1958. This report is concerned with the data obtained during the summers of 1957 and 1958.

Materials and Methods

Five additional adult Negro subjects (Subjects 6 through 10), four of whom had no . . . [Full Text PDF of this Article]

Author Affiliations
New Orleans

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

Footnotes
Submitted for publication Feb. 9, 1959.

Aided by grants from the United States Public Health Service; The Upjohn Company, Kalamazoo, Mich., and the Thibodeaux Research Foundation.

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