Ultrasound-guided Arterial Catheterization in Pediatric Patients

Comparison of Long-axis/In-plane and Short-axis/Out-of-plane Methods During the Ultrasound-guided Arterial Cannulation in Pediatric Patients

Investigators designed a prospective randomized controlled study to compare the long-axis/in-plane and short-axis/out-of-plane methods during the ultrasound-guided arterial catheterization in pediatric patients younger than 5 years old.

Inclusion Criteria:

• Surgery under general anesthesia
• Requires invasive arterial blood pressure monitoring

Exclusion Criteria:

• Infection/hematoma/skin disease/arteriovenous fistula/recent catheterization scar in radial artery or posterior tibial artery
• Peripheral vascular disease
• Congenital aortic disease