Feasibility of Nitroglycerin Patch as a Pretreatment for the Distal Radial Approach: Study Protocol for a Randomized Controlled Trial (DRANG Study)
Abstract
Background
The distal radial approach (DRA) is a novel catheter cannulation technique to access the distal radial artery for coronary angiography (CAG). It is associated with less occurrence of puncture site occlusion than the conventional transradial approach. However, cannulation failure occasionally occurs due to difficulty in puncturing the smaller distal radial artery. Nitroglycerin is expected to improve the rate of successful DRA via its vasodilative and vasospasm-preventive effects.