Overview The Effect of Periradial Injection of Papaverine Versus Nitroglycerine on Radial Artery Diameter Status: Completed Trial end date: 2019-09-02 Target enrollment: Participant gender: Summary Compare the effect of periradial injection of papaverine versus nitroglycerine on radial artery diamter before cannulation of it in cardiac surgery. Phase: Early Phase 1 Details Lead Sponsor: Kasr El Aini HospitalTreatments: NitroglycerinPapaverine