The Effect of Periradial Injection of Papaverine Versus Nitroglycerine on Radial Artery Diameter

The Effect of Periradial Injection of Papaverine Versus Nitroglycerine on Radial Artery Diameter Prior to Cannulation.

Compare the effect of periradial injection of papaverine versus nitroglycerine on radial artery diamter before cannulation of it in cardiac surgery.

we want in this study to facilitate radial artery canulation and decrease the number of attemps of puncture which may lead to disappearance of the pulse.

The aim of this study is to compare the effect of adding papaverine to local anesthetic xylocaine versus adding nitroglycerine to it on the diameter and palpability of radial artery and if perioperative spasm will decrease significantly with one of these methods.

Inclusion Criteria:

- Patients who will be included in the study are those scheduled for elective cardiac surgery who are hemodynamically stable.

Exclusion Criteria:

• Any patient with negative modified Allen test, atrioventricular block, glaucoma, altered liver function, unstable hemodynamics, emergency surgeries, and peripheral vascular disease.