Comparison of the effects of intravenous papaverine hydrochloride and oral pavabid HP capsulets on regional cerebral blood flow in normal individuals.

Academic Article

Abstract

  • A single-blind study was conducted in 13 right-handed normal male subjects to compare the effects of oral and i.v. papaverine on regional cerebral blood flow (rCBF). Six xenon-133 inhalation rCBF measurements were performed on each subject; three tests--baseline, placebo, and drug evaluations--were carried out on each of two separate days. The oral and i.v. drugs were randomized for first-day administration. rCBF, measured as flow gray (FG), increased significantly (p less than or equal to 0.001) from baseline with both drug forms. Increases of 10.53% and 13.94% (left and right hemispheres, respectively) were demonstrated 90 min after a single 600-mg dose of oral papaverine. Increases of 5.09% and 8.69%, respectively, were recorded immediately after a single 100-mg dose of i.v. papaverine. FG also increased significantly (p less than or equal to 0.001) for both drug forms when compared to that of placebo. Placebo produced only a slight increase (not significant) with both the oral and i.v. groups. The data show increasing rCBF in normal subjects.
  • Keywords

  • Administration, Oral, Adult, Capsules, Cerebrovascular Circulation, Humans, Injections, Intravenous, Male, Middle Aged, Papaverine
  • Digital Object Identifier (doi)

    Author List

  • McHenry LC; Stump DA; Howard G; Novack TT; Bivins DH; Nelson AO
  • Start Page

  • 442
  • End Page

  • 447
  • Volume

  • 3
  • Issue

  • 4