Differences in Radial and Ulnar Artery Size in Young Children

Differences in Radial and Ulnar Artery Size in Young Children: Does Hand Dominance Impact the Differences?

This is a prospective observational study that requires measurement of the size of both arteries in both upper extremities using ultrasound. These will be performed after the induction of anesthesia prior to the start of the surgical procedure.

The primary objective of this study is to evaluate differences in the size of the radial and ulnar artery in a single extremity and then compared to the non-dominant extremity.

Study Overview

• Status: Not yet recruiting
• Conditions: Surgery

• Study Type: Observational
• Enrollment (Estimated): 100

Contacts and Locations

Study Locations

• United States
  • Ohio
    • Columbus, Ohio, United States, 43205
      • Nationwide Children's Hospital
      • Contact: Julie Rice-Weimer, RN; Phone Number: 614-355-3142; Email: Julie.Rice-Weimer@nationwidechildrens.org
      • Principal Investigator: Joseph Tobias, MD
      • Contact: Catherine Roth, MPH; Email: Catherine.Roth@nationwidechildrens.org

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Pediatric surgical patients

Description

Inclusion Criteria:

• ASA 1-3 patients undergoing a surgical procedure requiring general anesthesia.

Exclusion Criteria:

• Patients with known abnormalities in their vasculature.
• Patients with a previous history of radial/ulnar artery cannulation or puncture.
• Patients with a history of significant upper extremity trauma.
• Patients with a history of congenital abnormalities of the upper extremities.
• Patients with acquired or congenital comorbid conditions known to affect vascular size or development.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Radial artery size	The anterior posterior measurement and the lateral measurement of the radial artery in both the dominant and non-dominant arm will be measured using ultrasonography.	Baseline
Ulnar artery size	The anterior posterior measurement and the lateral measurement of the ulnar artery in both the dominant and non-dominant arm will be measured using ultrasonography.	Baseline

Collaborators and Investigators

• Sponsor: Joseph D. Tobias

Study record dates

Study Major Dates

• Study Start (Estimated): July 1, 2026
• Primary Completion (Estimated): December 1, 2029
• Study Completion (Estimated): December 1, 2029

Study Registration Dates

• First Submitted: April 17, 2026
• First Submitted That Met QC Criteria: April 27, 2026
• First Posted (Actual): April 30, 2026

Study Record Updates

• Last Update Posted (Actual): April 30, 2026
• Last Update Submitted That Met QC Criteria: April 27, 2026
• Last Verified: April 1, 2026

More Information

Terms related to this study

• Other Study ID Numbers: STUDY00005918

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No