Reflex vasodilation induced by coronary angiography in human subjects

Robert Zelis, C. C. Caudill, K. Baggette, D. T. Mason

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

In order to evaluate the reflex peripheral vascular effects of coronary arteriography, forearm blood flow was measured plethysmographically and forearm vascular resistance calculated before and during coronary angiography with Hypaque M, 75%, and Renografin 76. The injection of Hypaque into the left coronary artery resulted in a forearm vasodilation which could not be duplicated by an injection of a comparable amount of contrast into the ascending aorta, three centimeters above the coronary ostia. Forearm blood flow rose from 2.95 to 5.41 ml/min/100 ml (83.4%) and forearm vascular resistance fell from 35.8 to 19.9 mm Hg/ml/min/100 ml (44.4%). Renografin injected into the left coronary artery resulted in less forearm vasodilation (21% increase in forearm blood flow and 32% decrease in forearm vascular resistance). When coronary arteriography was repeated following injection of atropine into the brachial artery, no forearm vasodilation occurred. It is suggested that in human subjects myocardial or coronary artery receptors can be activated by the intracoronary injection of iodinated contrast media which results in a forearm vasodilation.

Original languageEnglish (US)
Pages (from-to)490-493
Number of pages4
JournalCirculation
Volume53
Issue number3
DOIs
StatePublished - Jan 1 1976

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Coronary Angiography
Forearm
Vasodilation
Reflex
Vascular Resistance
Diatrizoate
Coronary Vessels
Injections
Angiography
Diatrizoate Meglumine
Brachial Artery
Atropine
Contrast Media
Blood Vessels
Aorta

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

Cite this

Zelis, Robert ; Caudill, C. C. ; Baggette, K. ; Mason, D. T. / Reflex vasodilation induced by coronary angiography in human subjects. In: Circulation. 1976 ; Vol. 53, No. 3. pp. 490-493.
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Reflex vasodilation induced by coronary angiography in human subjects. / Zelis, Robert; Caudill, C. C.; Baggette, K.; Mason, D. T.

In: Circulation, Vol. 53, No. 3, 01.01.1976, p. 490-493.

Research output: Contribution to journalArticle

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AB - In order to evaluate the reflex peripheral vascular effects of coronary arteriography, forearm blood flow was measured plethysmographically and forearm vascular resistance calculated before and during coronary angiography with Hypaque M, 75%, and Renografin 76. The injection of Hypaque into the left coronary artery resulted in a forearm vasodilation which could not be duplicated by an injection of a comparable amount of contrast into the ascending aorta, three centimeters above the coronary ostia. Forearm blood flow rose from 2.95 to 5.41 ml/min/100 ml (83.4%) and forearm vascular resistance fell from 35.8 to 19.9 mm Hg/ml/min/100 ml (44.4%). Renografin injected into the left coronary artery resulted in less forearm vasodilation (21% increase in forearm blood flow and 32% decrease in forearm vascular resistance). When coronary arteriography was repeated following injection of atropine into the brachial artery, no forearm vasodilation occurred. It is suggested that in human subjects myocardial or coronary artery receptors can be activated by the intracoronary injection of iodinated contrast media which results in a forearm vasodilation.

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