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A REVIEW OF SIGNIFICANT CONTRIBUTIONS MADE DURING 1937

ASHTON GRAYBIEL, M.D.

Arch Intern Med. 1938;61(5):808-840.

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

PHYSIOLOGY AND EXPERIMENTAL PATHOLOGY

Recent improvements in technic have made possible certain studies¹ on the dynamics of the pulmonary circulation in dogs under more nearly normal conditions than heretofore. It has been found that the velocity of the pulse wave in the pulmonary arteries is about the same as that in the aorta at the physiologic pressures existing in each. However, at comparable pressures the velocity is much greater in the pulmonary arteries than in the aorta, which suggests that in low pressure ranges the large pulmonary arteries are less easily distended than is the aorta. Variations in the pressure in the pulmonary arteries with respiration are in the same direction as the variations in the pressure in the systemic arteries, falling in inspiration and rising in expiration. The variations in the pulmonary arteries are probably the direct result of changes in intrathoracic pressure rather than the indirect result . . . [Full Text PDF of this Article]

Author Affiliations
With the Editorial Assistance of PAUL D. WHITE, M.D. BOSTON

From the Cardiac Clinic of the Massachusetts General Hospital.