Guidewire-assisted Radial A-line in Neonate and Infant

Comparison of Radial Artery Cannulation Technique in Pediatric Patients: Direct Versus Guidewire-assisted

In neonate and infant, radial artery cannulation may be challenging and multiple attempts are required because of the small diameter.

The invastigators will compare the success rates of radial arterial cannulation with a guidewire-assisted technique and the direct technique in pediatric patient(<1yr).

Inclusion Criteria:

• Pediatric patients undergoing general anesthesia with arterial cannulation (for hemodynamic monitoring or blood sampling)

Exclusion Criteria:

• Skin lesion, infection, hematoma, recent cannulation at cannulation site
• Unstable radial pulse (d/t unstable vital sign, or arrhythmias)