Single-center study, randomized, double-blind, placebo controlled, with patients undergoing diagnostic or therapeutic catheterization via the transradial approach. Patients will be randomized into two groups: one group will receive the vasodilator nitroglycerin during the procedure (intervention group), and a second group will receive saline 0.9% in the same volume and time during the procedure (control group). Will be evaluated: incidence of spasms of the radial artery, ability to perform the procedure without the need to change the access site, pain presented by the patient, time and total radiation of the procedure.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
QUADRUPLE
Enrollment
328
Nitroglycerin (200 micrograms) + saline solution 10 ml in radial artery after sheath insertion
Placebo (saline solution 10 ml) in radial artery after sheath insertion
Instituto de Cardiologia de Santa Catarina
São Jose, Santa Catarina, Brazil
Pain Assessment Using Visual Analogue Scale
the patients' feeling of pain in the forearm, and it was measured using a visual analogue scale (VAS), applied at the end of the procedure by an interventional nurse. The VAS consists of a single line measuring 100 mm, anchored by verbal descriptors, saying 'no pain' and 'worst possible pain'. Higher values mean a worse pain.
Time frame: Five minutes after sheath removal
Procedure Duration
Procedure duration, from artery catheterization up to removal of sheath.
Time frame: Immediate
Radiation Exposure
Total radiation required to complete the procedure.
Time frame: Immediate
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