Topical Nitroglycerine for Prevention of Radial Artery Spasm

Nitroglycerin cream is applied \~ 15 minutes before radial artery puncture for emergency or planned invasive cardiology procedure (example: coronary angiography), and radial artery spasm and diameter are determined by angiography, injecting contrast into the radial artery through the placed radial sheath.

Placebo cream with no active compounds is applied by the designated nurse to the radial puncture site, similar to NTG cream, with both patient and invasive cardiologist blinded wo which arm the patient is included in.