Proximal vs Distal Radial Artery Cannulation

Comparison of Proximal and Distal Cannulation of the Radial Artery by Ultrasonography in Adult Patients Undergoing Elective Surgery

Intraarterial cannulation is important for continuous blood pressure monitoring and blood gas analysis throughout the surgical procedure and in intensive care patients. Ultrasonography (USG) has gained popularity in vascular cannulations and facilitates intraarterial interventions. Radial artery is one of the most preferred arteries. Our aim in this study is to compare proximal and distal radial artery cannulations by USG in terms of procedural success, procedure time and complications.

Study Overview

• Status: Completed
• Conditions: Radial Artery Cannulation; Arterial Catheterization
• Intervention / Treatment: Other: Proximal arterial cannulation; Other: Distal arterial cannulation

Detailed Description

After the patients are admitted to the operating room, routine monitoring (electrocardiography, noninvasive blood pressure and peripheral oxygen saturation) will be performed. After appropriate vascular access is provided to the patients, the induction phase of general anesthesia will begin. Anesthesia induction will be left to the choice of the primary anesthesiologist and no protocol will be followed. In case of >25% drop in blood pressure, 0.1 mcg/kg noradrenaline will be administered intravenously. After the appropriate position is given to the arm of the patient to be treated, radial artery cannulation will be performed with USG obeying asepsis rules. Patients will be divided into 2 groups by closed envelope method. The first group will be the patients who will be cannulated at the level of the distal radius (styloid process) and the second group will be the patients who will be cannulated proximally by measuring 5 cm from the styloid process. Demographic and clinical characteristics of the patients will be recorded. Catheterization success rates, procedure duration, number of interventions, vessel diameter, hematoma at the site of intervention on the 1st postoperative day, circulatory disturbance will be examined.

• Study Type: Interventional
• Enrollment (Actual): 60
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Istanbul, Turkey, 34899
    • Marmara University Pendik Training and Research Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: No

Study Population

18-75 year old patients who will undergo elective surgery under general anesthesia at Marmara University Training and Research Hospital.

Description

Inclusion Criteria:

• Elective surgery
• American Society of Anaesthesiologists (ASA) physical status I-III

Exclusion Criteria:

• Emergency surgery
• ASA IV or above
• Peripheral vascular disease
• Vasopressor use
• Anatomical abnormality at the cannulation site
• Infection at the cannulation site
• Coagulation defect

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Group P; Radial arterial cannulation from the proximal part of the artery 5 cm proximal to the level of the styloid process.	Other: Proximal arterial cannulation; Radial arterial cannulation from the proximal part of the artery 5 cm proximal to the level of the styloid process.
Active Comparator: Group D; Radial arterial cannulation from the distal part of the artery at the styloid process.	Other: Distal arterial cannulation; Radial arterial cannulation from the distal part of the artery at the styloid process.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Success	Radial artery catheterization success rates will be compared between the groups.	From the preinduction period in the operating theater to the postoperative day one.

Collaborators and Investigators

• Sponsor: Marmara University
• Investigators: Principal Investigator: Ruslan Abdullayev, Marmara University Department of Anesthesiology and Reanimation

Study record dates

Study Major Dates

• Study Start (Actual): October 25, 2024
• Primary Completion (Actual): June 30, 2025
• Study Completion (Actual): June 30, 2025

Study Registration Dates

• First Submitted: October 24, 2024
• First Submitted That Met QC Criteria: October 24, 2024
• First Posted (Actual): October 26, 2024

Study Record Updates

• Last Update Posted (Actual): July 3, 2025
• Last Update Submitted That Met QC Criteria: June 30, 2025
• Last Verified: June 1, 2025

More Information

Terms related to this study

• Other Study ID Numbers: 09.2024.653

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No