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DIETARY AND EMOTIONAL FACTORS AFFECTING THE BLOOD‐PRESSURE OF CATS, OBSERVED BY EXTERIORIZATION OF THE CAROTID ARTERY
Author(s) -
Liddell E. G. T.,
Carleton H. M.
Publication year - 1936
Publication title -
quarterly journal of experimental physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0370-2901
DOI - 10.1113/expphysiol.1936.sp000710
Subject(s) - blood pressure , cats , carotid arteries , medicine , artery , zoology , cardiology , anesthesia , endocrinology , biology
(1) An operative procedure is described for exteriorizing the carotid artery of cats. (2) The normal carotid pressure, measured by a modified Riva‐Rocci method, is 140–170 mm. Hg. (3) On a diet of raw meat 200 g. a day, the blood‐pressure is lower (130–140) and the weight increases by about 20 per cent. (4) On a milk diet (300 c.c. a day), the blood‐pressure is higher (150–170) and the weight decreases to its former value. (5) The addition of 0·8 g. histidine to the milk has no marked effect on blood‐pressure. (6) Emotional changes are accompanied by a rise in blood‐pressure, e.g. on seeing a mouse, to 220 mm. Hg or on hearing a blue‐bottle to 190 mm. Hg. We are indebted to Mr. A. S. Chapman for his care of the animals and to Mr. C. Carr for assistance with blood‐pressure readings.