Topical Radial Artery Vasodilation

The Effect of Topical Administration of Lidocaine/Nitroglycerin Combination Versus Placebo on Radial Artery Access in Patients Undergoing Cardiac Catheterization Via the Radial Artery

The aim of the study is to facilitate radial artery access for cardiac catheterization. The investigators hypothesize that topical nitroglycerin and lidocaine will reduce radial artery spasm. Patients undergoing cardiac catheterization via the radial artery will be randomized to topical nitroglycerin + lidocaine versus placebo.

The aim of the study is to facilitate radial artery access for cardiac catheterization. The investigators hypothesize that topical nitroglycerin and lidocaine will reduce radial artery spasm. Patients undergoing cardiac catheterization via the radial artery will be randomized to topical nitroglycerin + lidocaine versus placebo.

Inclusion Criteria:

• Undergoing trans-radial cardiac catheterization

Exclusion Criteria:

• inability to receive nitroglycerin or lidocaine due to allergy or medication interactions