Arterial Blood Gas AnalysisSTATIC-USNCT07625631
Static Ultrasound Guidance for Radial Arterial Puncture
A study testing Static Ultrasound-Guided Radial Arterial Puncture and Conventional Palpation Technique in people with Arterial Blood Gas Analysis, run by Sisli Hamidiye Etfal Training and Research Hospital at 1 site in Turkey (Türkiye).
Trial summary
Radial arterial puncture is a commonly performed procedure in emergency departments for arterial blood gas analysis and invasive hemodynamic monitoring. The conventional palpation technique may be associated with prolonged procedure duration and multiple puncture attempts, particularly in patients with weak arterial… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Arterial Blood Gas Analysis
- What is being tested?
- Static Ultrasound-Guided Radial Arterial Puncture and Conventional Palpation Technique
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 100 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 5 Apr 2023to 5 Jun 2023
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adult patients aged 18 years and older
- Patients requiring radial arterial puncture in the emergency department
- Patients who provided informed consent
Who cannot join
- Patients younger than 18 years
- Known vascular abnormalities or previous vascular surgery involving the puncture site
- Local infection or skin lesion at the puncture site
- Hemodynamic instability requiring immediate intervention
- Inability to provide informed consent
- Previous enrollment in the study
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Static Ultrasound-Guided Versus Conventional Palpation Techniques for Radial Arterial Puncture in the Emergency Department: A Randomized Controlled Trial
Radial arterial puncture is a commonly performed procedure in emergency departments for arterial blood gas analysis and invasive hemodynamic monitoring. The conventional palpation technique may be associated with prolonged procedure duration and multiple puncture attempts, particularly in patients with weak arterial pulsation or difficult vascular anatomy.
Ultrasound guidance has been proposed as a method to improve procedural success. This randomized controlled trial aimed to compare the static ultrasound-guided technique with the conventional palpation technique for radial arterial puncture in adult emergency department patients.
The primary outcome was puncture duration. Secondary outcomes included first-attempt success rate, total number of attempts, procedure-related complications, and patient pain scores.
Read the detailed description
Radial arterial puncture is frequently performed in emergency departments for arterial blood gas sampling and invasive arterial pressure monitoring. Although the conventional palpation technique is widely used, procedural failure, prolonged puncture duration, and repeated attempts remain common problems, especially in patients with difficult vascular access.
Ultrasound-guided vascular access techniques have demonstrated improved success rates in several vascular procedures. However, evidence regarding the effectiveness of the static ultrasound-guided method for radial arterial puncture in emergency department settings remains limited.
This prospective randomized controlled trial was conducted in the emergency department of University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital. Adult patients requiring radial arterial puncture were randomly assigned to either the static ultrasound-guided group or the conventional palpation group.
In the static ultrasound-guided group, the radial artery location was identified using ultrasonography prior to skin puncture, and the puncture site was marked externally. In the conventional group, arterial puncture was performed using anatomical landmarks and palpation alone.
The primary outcome of the study was puncture duration. Secondary outcomes included first-attempt success, total number of puncture attempts, procedure-related complications, and patient-reported pain scores.
The study aimed to evaluate whether the static ultrasound-guided technique could improve procedural efficiency and success compared with the conventional palpation technique in emergency department practice.
- Conditions
- Arterial Blood Gas Analysis
- Being tested
- Static Ultrasound-Guided Radial Arterial Puncture, Conventional Palpation Technique
- Keywords
- Ultrasound-Guided Vascular Access
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Static Ultrasound-Guided Radial Arterial PunctureProcedure or surgery
Static ultrasound guidance was used to identify and externally mark the radial artery location prior to arterial puncture.
Conventional Palpation TechniqueProcedure or surgery
Radial arterial puncture was performed using anatomical landmarks and palpation without ultrasound guidance
| Study group | Role | What they receive |
|---|---|---|
| Static Ultrasound-Guided Group | Experimental | Participants underwent radial arterial puncture using the static ultrasound-guided technique. The radial artery was identified with ultrasonography prior to puncture, and the puncture site was externally marked before needle insertion. Receives: Procedure: Static Ultrasound-Guided Radial Arterial Puncture |
| Conventional Palpation Group | Active comparator | Participants underwent radial arterial puncture using the conventional palpation technique based on anatomical landmarks and arterial pulse palpation. Receives: Procedure: Conventional Palpation Technique |
What is being measured
The primary outcome is the main question the study is designed to answer.
Puncture Duration
Measured: Immediately after the procedure
Puncture Duration
Time required to successfully complete radial arterial puncture, measured from skin contact of the needle to successful arterial blood aspiration.
Measured: At completion of the arterial puncture procedure or after a maximum of three puncture attempts
Secondary outcomes (1)
First-Attempt Success Rate
Successful radial arterial puncture achieved on the first needle insertion attempt.
Measured: During the procedure
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Jun 2026
- Study start5 Apr 2023
- Primary completion5 May 2023
- Study completion5 Jun 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Arterial Blood Gas AnalysisStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Participants were randomly assigned to either the static ultrasound-guided radial arterial puncture group or the conventional palpation group in a parallel design.
- Masking
- None (open label)
- Enrolment
- 100 participants (actual)
Sponsor and investigators
- Lead sponsor
- Sisli Hamidiye Etfal Training and Research Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, adem melekoğlu, Sisli Hamidiye Etfal Training and Research Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07625631
- Sponsor's protocol ID
- SHEAH-ED-2026-001
- Other IDs
- 3870
- Acronym
- STATIC-US
- Status last verified
- May 2026
- First submitted
- 21 May 2026
- Last updated
- 4 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No: Individual participant data are not planned to be shared because of institutional data protection policies and patient confidentiality considerations.
Study at a glance
From the registry record, last updated by the sponsor on 4 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Static Ultrasound-Guided Versus Conventional Palpation Techniques for Radial Arterial Puncture in the Emergency Department: A Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT07625631
- Acronym / sponsor ID
- STATIC-US / SHEAH-ED-2026-001
- Conditions
- Arterial Blood Gas Analysis
- Keywords
- Ultrasound-Guided Vascular Access
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 100 participants (actual)
- Lead sponsor
- Sisli Hamidiye Etfal Training and Research HospitalUniversity, hospital or other
- Study start
- 5 Apr 2023 (actual)
- Primary completion
- 5 May 2023 (actual)
- Study completion
- 5 Jun 2023 (actual)
- First posted
- 4 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Radial arterial puncture is a commonly performed procedure in emergency departments for arterial blood gas analysis and invasive hemodynamic monitoring. The conventional palpation technique may be associated with prolonged procedure duration and multiple puncture attempts, particularly in patients with weak arterial pulsation or difficult vascular anatomy.
Ultrasound guidance has been proposed as a method to improve procedural success. This randomized controlled trial aimed to compare the static ultrasound-guided technique with the conventional palpation technique for radial arterial puncture in adult emergency department patients.
The primary outcome was puncture duration. Secondary outcomes included first-attempt success rate, total number of attempts, procedure-related complications, and patient pain scores.
Detailed description
Radial arterial puncture is frequently performed in emergency departments for arterial blood gas sampling and invasive arterial pressure monitoring. Although the conventional palpation technique is widely used, procedural failure, prolonged puncture duration, and repeated attempts remain common problems, especially in patients with difficult vascular access.
Ultrasound-guided vascular access techniques have demonstrated improved success rates in several vascular procedures. However, evidence regarding the effectiveness of the static ultrasound-guided method for radial arterial puncture in emergency department settings remains limited.
This prospective randomized controlled trial was conducted in the emergency department of University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital. Adult patients requiring radial arterial puncture were randomly assigned to either the static ultrasound-guided group or the conventional palpation group.
In the static ultrasound-guided group, the radial artery location was identified using ultrasonography prior to skin puncture, and the puncture site was marked externally. In the conventional group, arterial puncture was performed using anatomical landmarks and palpation alone.
The primary outcome of the study was puncture duration. Secondary outcomes included first-attempt success, total number of puncture attempts, procedure-related complications, and patient-reported pain scores.
The study aimed to evaluate whether the static ultrasound-guided technique could improve procedural efficiency and success compared with the conventional palpation technique in emergency department practice.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- Participants were randomly assigned to either the static ultrasound-guided radial arterial puncture group or the conventional palpation group in a parallel design.
| Arm | Type | Receives |
|---|---|---|
| Static Ultrasound-Guided Group | Experimental | Procedure: Static Ultrasound-Guided Radial Arterial PunctureParticipants underwent radial arterial puncture using the static ultrasound-guided technique. The radial artery was identified with ultrasonography prior to puncture, and the puncture site was externally marked before needle insertion. |
| Conventional Palpation Group | Active comparator | Procedure: Conventional Palpation TechniqueParticipants underwent radial arterial puncture using the conventional palpation technique based on anatomical landmarks and arterial pulse palpation. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Adult patients aged 18 years and older
- Patients requiring radial arterial puncture in the emergency department
- Patients who provided informed consent
Key exclusion criteria (6 listed)
- Patients younger than 18 years
- Known vascular abnormalities or previous vascular surgery involving the puncture site
- Local infection or skin lesion at the puncture site
- Hemodynamic instability requiring immediate intervention
- Inability to provide informed consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Static Ultrasound-Guided Radial Arterial PunctureStatic ultrasound guidance was used to identify and externally mark the radial artery location prior to arterial puncture. | Procedure or surgery | Static Ultrasound-Guided Group |
| Conventional Palpation TechniqueRadial arterial puncture was performed using anatomical landmarks and palpation without ultrasound guidance | Procedure or surgery | Conventional Palpation Group |
Primary outcome
Puncture Duration
Time frame: Immediately after the procedure
Puncture Duration
Time frame: At completion of the arterial puncture procedure or after a maximum of three puncture attempts
Time required to successfully complete radial arterial puncture, measured from skin contact of the needle to successful arterial blood aspiration.
1 secondary outcome
First-Attempt Success Rate
Time frame: During the procedure
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Jun 2026.
- Şişli Hamidiye Etfal Training and Research HospitalLink provided by the sponsor.
- Individual participant dataSharing planned: No. Individual participant data are not planned to be shared because of institutional data protection policies and patient confidentiality considerations.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Static Ultrasound-Guided Radial Arterial Puncture and Conventional Palpation Technique in people with Arterial Blood Gas Analysis, run by Sisli Hamidiye Etfal Training and Research Hospital at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Puncture Duration (time frame: Immediately after the procedure). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Jun 2026.