The Annals of Thoracic Surgery, Vol 21, 16-18, Copyright © 1976 by The Society of Thoracic Surgeons
Sodium nitroprusside as a coronary vasodilator in man: a comparison of the effects of sodium nitroprusside and papaverine hydrochloride on aortocoronary saphenous vein graft flow
PB Larsen, BK Yeh, TO Gentsch, EA Traad, AR Faraldo, AJ Gosselin and PS Swaye
Blood flow in aortocoronary saphenous vein grafts was studied in response
to intragraft injection of sodium nitroprusside and papaverine
hydrochloride. Following injection of 50 mug of sodium nitroprusside, mean
graft flow increased from 40.1 +/- 4.5 to 81.3 +/- 8.5 ml per minute.
Administration of 30 mg of papaverine hydrochloride caused mean graft flow
to rise from 35.4 +/- 3.9 to 70 +/- 7.9 ml per minute. Sodium nitroprusside
increases aortocoronary graft flow, the doubling effect of 50 mug of the
drug being of the same order of magnitude as that induced by 30 mg of
papaverine hydrochloride.