Key result
Intracardiac injections revealed approximately one capillary per muscle fiber in human and animal hearts, with blood flow shifting to Thebesian vessels during heart dilatation.
Population
Living cats, rabbits, rats, and human hearts obtained within three or four hours post mortem
Design
Preclinical
Authors
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Alerts clinicians to possible Thebesian shunting in dilated hearts; leaves open its role in modern perfusion imaging.
This early anatomical study demonstrates a 1:1 ratio of capillaries to muscle fibers in the heart and highlights the role of Thebesian vessels in shunting blood during cardiac dilatation.
Joseph T. Wearn (1926) studied this question. Intracardiac injections of dyes and India ink was evaluated on Capillary filling and density. Intracardiac injections revealed approximately one capillary per muscle fiber in human and animal hearts, with blood flow shifting to Thebesian vessels during heart dilatation.
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