Application of Intermittent Training in Radial Artery Puncture and Catheterization Skills Under Ultrasound-Guided Line Guidance

NCT07248683 | Not Yet Recruiting

• 1 other identifier: Haoyao Ren--2025-11
• Study Type: interventional
• Target: 30
• Locations: 0 countries
• Sites: N/A

Brief Summary

This study aims to investigate medical students' mastery of radial artery puncture and catheterization skills guided by the midline on ultrasound when using scenario simulation combined with intermittent training, and to compare this approach with traditional teaching methods.

Conditions

Learning and Memorization of Radial Artery Puncture and Catheterization Guided by Ultrasound Midline

Outcome Measures

Primary Outcomes (3)

• First Attempt Catheterization Success Rate

  The percentage of cases where the operator successfully punctures the target vessel (specifically the radial artery in my study) on the first attempt and advances the catheter to the desired position. This process requires no additional puncture attempts, catheter adjustments, or encounters procedural failure (such as unsuccessful vessel entry, guidewire/catheter entanglement, abnormal positioning, or immediate complications like hematoma formation).

  The fourteenth day after the unified training

• First-Attempt Radial Artery Catheterization Success Rate

  First-Attempt Success Rate of Radial Artery Catheterization Guided by Ultrasound Median Line

  The 14th day after training

• Incidence of complications

  Incidence of Complications in Radial Artery Puncture and Catheterization Guided by Ultrasound Midline

  The 14th day after training

Study Arms (2)

Interval Training Group

EXPERIMENTAL

All participants underwent centralized training. The intermittent retraining group performed fixed-interval repeated training, executing the same tasks daily on days 3, 7, and 14.

Other: Intermittent Retraining

Non-interval retraining

EXPERIMENTAL

Through centralized training, it was confirmed that all trainees had mastered the steps of radial artery puncture and catheterization guided by the midline ultrasound. A test validated the students' proficiency in this procedure. The non-intermittent retraining group will not undergo intermittent training during the following week.

Other: Non-interval retraining

Interventions

Intermittent Retraining OTHER

Through basic skills training and testing, it was confirmed that all trainees had mastered the procedural steps for radial artery puncture and catheterization guided by ultrasound midline imaging. Testing also validated the students' proficiency in performing this procedure. The intermittent retraining group underwent repeated training at fixed intervals, performing the same tasks daily on days 3, 7, and 14.

Interval Training Group

Non-interval retraining OTHER

Through basic skills training and testing, it was confirmed that all trainees had mastered the procedural steps for radial artery puncture and catheterization guided by ultrasound midline imaging. Testing also validated the students' proficiency in performing this procedure. The non-intermittent retraining group did not repeat the same tasks.

Non-interval retraining

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may not qualify if:

• Training Stage: Resident physicians who have not yet independently performed ultrasound-guided radial artery puncture and catheterization procedures.
• Willingness to Learn: Voluntary participation in this "Ultrasound-Guided Radial Artery Catheterization" training program with full understanding of the research content.
• Informed Consent: Have signed a written informed consent form agreeing to participate in this study and comply with protocol requirements.
• Basic Requirements: Possess good hand-eye coordination and learning ability, capable of cooperating to complete the entire training course and data collection.
• Skill Level: Residents who achieved a high pre-test performance score or demonstrated consistent success in performing ultrasound-guided radial artery catheterization prior to the study.
• Cognitive or Motor Impairment: Residents with severe cognitive dysfunction, motor impairment, or a history of psychiatric disorders that may compromise training efficacy assessment.
• Time Commitment and Compliance: Individuals unable to guarantee completion of the prescribed training program, practical exercises, and follow-up evaluations.
• Other Conditions: Participants deemed unsuitable for this study by the investigator due to other reasons (e.g., rotation schedule conflicts, inability to coordinate personal time, etc.).
• Age: Generally ≥18 years old. Clinical Indications: Patients requiring invasive arterial pressure monitoring via radial artery puncture and catheterization due to surgical procedures, critical condition monitoring, or blood gas analysis.
• Vascular Criteria: Palpable radial artery pulse on the puncture side, negative modified Allen test (or adequate ulnar artery compensation as determined by current guidelines).
• Informed Consent: Patient or authorized family member fully understands the study purpose and procedures, and has signed a written informed consent form.
• Cooperation Capacity: Able to cooperate throughout the radial artery puncture and catheterization procedure.
• Circulatory Impairment: Severe shock, hypovolemic state, or anticipated difficulty with radial artery puncture.
• Coagulation Abnormalities: Significant bleeding tendency, marked thrombocytopenia, or ongoing anticoagulant/antiplatelet therapy without discontinuation.
• Abnormal vascular anatomy: Preliminary ultrasound assessment indicates severe tortuosity, malformation, excessively narrow diameter, or other significant anatomical variations in the radial artery that may compromise puncture success or safety.

Sponsors & Collaborators

• General Hospital of Ningxia Medical University: lead

Central Study Contacts

Zhihua Wang, PhD

CONTACT

86-0951-18295111380; 846522050@qq.com

Haoyao Ren, MS

CONTACT

86-0951-18509342993; 736695348@qq.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Purpose: OTHER
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 18, 2025
• First Posted: November 25, 2025
• Study Start: November 20, 2025
• Primary Completion: February 28, 2026
• Study Completion: February 28, 2026
• Last Updated: November 25, 2025

Record last verified: 2025-08