Subcutaneous Nitroglycerin for Radial Arterial Catheterization in Pediatric Patients: A Randomized Controlled Trial

Area of Science:

• Pediatric Anesthesiology
• Vascular Access Procedures
• Pharmacology

Background:

• Pediatric radial artery cannulation is difficult due to small vessel size.
• Nitroglycerin is a vasodilator used in adults to aid radial artery cannulation.
• The study investigated nitroglycerin's efficacy in pediatric patients.

Purpose of the Study:

• To evaluate if subcutaneous nitroglycerin improves the success rate of pediatric radial artery cannulation.
• To assess the impact of nitroglycerin on radial artery diameter.
• To determine the effect on complication rates such as hematoma and vasospasm.

Main Methods:

• A double-blind, randomized, controlled study included 113 pediatric patients under 2 years old.
• Patients received either subcutaneous nitroglycerin (5 μg/kg) or normal saline before ultrasound-guided radial artery cannulation.
• Radial artery diameter and cannulation success rates were measured.

Main Results:

• The nitroglycerin group showed a significantly higher first-attempt success rate (91.2%) compared to the control group (66.1%).
• Subcutaneous nitroglycerin injection increased radial artery diameter more effectively than saline (25.0% vs. 1.9%).
• Overall complication rates were substantially lower in the nitroglycerin group (3.5%) versus the control group (31.2%).

Conclusions:

• Subcutaneous nitroglycerin injection is an effective method to improve first-attempt success rates for pediatric radial artery cannulation.
• Nitroglycerin administration reduces the incidence of complications, including hematoma and vasospasm.
• This intervention offers a promising approach to enhance vascular access in pediatric patients.