Comparison of Short-Axis and Long-Axis Internal Jugular Vein Cannulation for First-Pass Success

July 2, 2026 updated by: Ahmad, University of Health Sciences Lahore

Comparison Between Short Axis and Long Axis For Cannulation Of Internal Jugular Vein in Terms Of First Pass Success

To compare the frequency of first pass success by short axis versus long axis for cannulation of internal jugular vein.

Study Overview

Detailed Description

This randomized controlled trial aims to compare the effectiveness of short-axis and long-axis ultrasound-guided approaches for cannulation of the internal jugular vein (IJV) in terms of first-pass success. Central venous catheterization is a commonly performed procedure for invasive monitoring and administration of medications and fluids. Ultrasound guidance has improved the safety and success of IJV cannulation compared with traditional landmark-based techniques; however, uncertainty remains regarding the optimal ultrasound imaging approach.

A total of 60 eligible patients undergoing IJV cannulation will be enrolled and randomly allocated into two equal groups. Participants in Group A will undergo ultrasound-guided IJV cannulation using the short-axis approach, while participants in Group B will undergo cannulation using the long-axis approach. All procedures will be performed by the researcher under direct supervision using standardized ultrasound-guided techniques.

The primary objective is to compare the frequency of first-pass success between the two approaches. First-pass success is defined as successful IJV cannulation with a single skin puncture and without needle redirection. Baseline demographic and clinical characteristics will be recorded before the procedure. The findings of this study may help identify the preferred ultrasound-guided technique for maximizing first-pass success during IJV cannulation and potentially reducing procedure-related complications associated with multiple cannulation attempts.

Study Type

Interventional

Enrollment (Estimated)

10

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

    • Punjab Province
      • Lahore, Punjab Province, Pakistan, 54000
        • National Hospital and Medical Center
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Age 25-70 years.
  • Either male or female gender.
  • Undergoing cannulation of IJV.

Exclusion Criteria:

  • Patients who will be on hemodialysis therapy through double lumen catheter in IJV, assessed by reviewing previous medical records.
  • Patients who will have history of previous insertion of IJV line, assessed by reviewing previous medical records.
  • Patients with history of neck surgery, assessed by reviewing previous medical records.
  • Uncooperative patient.
  • Platelet count < 50,000/mm3.
  • International normalized ration 3 times upper normal limit (1.1).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Group A (Short-Axis Approach)
In this approach, IJV will be visualized by placing the transducer in a transverse orientation on the patient neck at the level of the cricoid cartilage. The needle will be inserted at 60° to the vertical and will be advanced toward the vein employing gentle aspiration on the attached syringe. Entry to the vein will be confirmed by visualizing indentation of the anterior wall of the vein followed by blood in the syringe and by visualizing the tip of the needle inside the vein. Guide wire will be passed followed by dilator insertion and finally central vein line.
Internal jugular vein cannulation performed under ultrasound guidance using the short-axis approach. The transducer is placed in a transverse orientation at the level of the cricoid cartilage, allowing visualization of the internal jugular vein and carotid artery during needle insertion.
Active Comparator: Group B (Long-Axis Approach)
In this approach, the probe will be centered on the IJV and rotated through 90° in a clockwise direction resulting in long axis image of the vein. The needle insertion point will be directly beneath the most proximal end of the ultrasound probe. The needle will be inserted at 30° to the vertical and will be advanced toward the vein employing gentle aspiration. Entry to the vein will be confirmed by visualizing needle entry into the vein followed by aspiration of blood in the syringe. Guide wire will be inserted followed by dilator insertion and finally central vein line.
Internal jugular vein cannulation performed under ultrasound guidance using the long-axis approach. The transducer is rotated to obtain a longitudinal view of the internal jugular vein, allowing continuous visualization of the needle during vessel cannulation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
First-Pass Success Rate of Ultrasound-Guided Internal Jugular Vein Cannulation
Time Frame: Assessed during the cannulation procedure (within 5 minutes of initiation of cannulation).
First-pass success rate of ultrasound-guided internal jugular vein cannulation, defined as successful venous cannulation with a single skin puncture and needle pass.
Assessed during the cannulation procedure (within 5 minutes of initiation of cannulation).

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Total Cannulation Success Rate
Time Frame: Assessed during the procedure (within 15 minutes).
Total cannulation success rate, defined as successful placement of the internal jugular venous catheter.
Assessed during the procedure (within 15 minutes).
Number of Needle Passes Required for Successful Cannulation
Time Frame: Recorded during the procedure.
Total number of needle insertion attempts required to achieve successful ultrasound-guided internal jugular vein cannulation.
Recorded during the procedure.
Incidence of Hematoma Formation at the Cannulation Site
Time Frame: Assessed immediately after the procedure and within 24 hours.
Occurrence of hematoma at the internal jugular vein cannulation site following ultrasound-guided catheter insertion.
Assessed immediately after the procedure and within 24 hours.
Incidence of Posterior Vessel Wall Puncture
Time Frame: Assessed during the procedure.
Occurrence of unintended puncture of the posterior wall of the internal jugular vein during ultrasound-guided cannulation.
Assessed during the procedure.
Incidence of Pneumothorax Following Cannulation
Time Frame: Assessed within 24 hours following cannulation.
Occurrence of pneumothorax associated with ultrasound-guided internal jugular vein cannulation.
Assessed within 24 hours following cannulation.
Overall Procedure-Related Complications
Time Frame: Assessed during the procedure and up to 24 hours after cannulation.
Frequency of procedure-related adverse events, including hematoma, posterior vessel wall puncture, pneumothorax, or other complications occurring during or after ultrasound-guided internal jugular vein cannulation.
Assessed during the procedure and up to 24 hours after cannulation.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Chair: Shahida Khawaja, MBBS, FCPS, National Hospital and Medical Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

October 1, 2026

Primary Completion (Estimated)

April 1, 2027

Study Completion (Estimated)

April 1, 2027

Study Registration Dates

First Submitted

June 25, 2026

First Submitted That Met QC Criteria

July 2, 2026

First Posted (Actual)

July 9, 2026

Study Record Updates

Last Update Posted (Actual)

July 9, 2026

Last Update Submitted That Met QC Criteria

July 2, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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