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AN ARTERIOGRAPHIC STUDY OF COLLATERAL CIRCULATION

EDGAR V. ALLEN, M.D.

Arch Intern Med. 1936;57(3):601-609.

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

Nature is lavish in her methods of protecting an organism against harm. One of these methods is the production of tissue in excess of that which is needed for the normal function of an organ. The thyroid, parathyroid and adrenal glands, the kidneys, the pancreas, the testes and the ovaries are excessive, anatomically and functionally. Small amounts of these organs can function as units which are entirely adequate for normal demands.

Morgagni¹ made the first anatomic observations on the development of collateral circulation. These observations were added to by the experimental studies of John Hunter,² who ligated the main artery of the rapidly growing antler of a deer. The result was not a cessation of growth but rather a rapid appearance of many enlarged arteries, which carried the blood around the obstruction.³

It is not surprising that the arterial circulation is equipped with safeguards. The integrity of . . . [Full Text PDF of this Article]

Author Affiliations
ROCHESTER, MINN.

From the Division of Medicine, The Mayo Clinic.

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