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American Journal of Roentgenology, Vol 98, 914-921, Copyright © 1966 by American Roentgen Ray Society

BLOOD PRESSURE CHANGES INDUCED BY SUBCLAVIAN INJECTION OF METHYLGLUCAMINE DIATRIZOATE (RENOGRAFIN)

JYOJI HANDA M.D.1, JOHN S. MEYER M.D.2, and KO SAKAMOTO M.D.1

1 From the Department of Neurology, Wayne State University School of Medicine, the Wayne Center for Cerebrovascular Research, Harper Hospital and the Detroit General Hospital, Detroit, Michigan
2 Fellows of the Michigan Heart Association

1. Transient increase in blood pressure followed by a secondary hypotensive response and bradycardia was observed after rapid injection of contrast material or saline into the subclavian artery in the dog. Peripheral vasodilatation was noted.

2. The transient and prompt elevation of the blood pressure was due to local mechanical (hydraulic) factors following the rapid injection of a large bolus of fluid at high pressure.

3. The carotid sinus reflex does not play a primary role in the production of the secondary hypotension. Section of the vagus nerves abolished the bradycardia and diminished the fall of blood pressure.

4. Transection of the spinal cord at C1 abolished the fall of blood pressure. It was concluded that under the experimental conditions described, the hypotension following intra-arterial injection of a liquid bolus resulted from stimulation of central vasomotor centers by perfusion.


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Copyright © 1966 by the American Roentgen Ray Society.