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To the Editor:—
The report by Dr. Rupert B. Raney (The Journal, October 28, p. 1619) of a successful surgical procedure to relieve angina pectoris by cutting the efferent sympathetic fibers to the heart exclusive of the afferent fibers of the heart is confirmatory evidence of the experimental work which Mr. K. Jochim and I have recently reported (Am. J. Physiol.126:395 [June] 1939) in which we demonstrated that the only coronary vasoconstrictor fibers present in the dog are adrenergic in character, tonically active and bundled in the sympathetic nerves. In our studies we did not find any cholinergic coronary vasoconstrictors in the vagi but only cholinergic vasodilators. It would appear, therefore, from the report of Dr. Raney that the innervation of the coronary arteries in man are similar to that reported by us in the dog. Hence, it is not necessary to assume, as the author did, that
Katz LN. A SURGICAL PROCEDURE FOR ANGINA PECTORIS. JAMA. 1939;113(22):1982. doi:10.1001/jama.1939.02800470058025
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