NCT06838572

Brief Summary

In this project, volunteers will be recruited to cool the superficial skin of the axillary brachial plexus away from the puncture point, resulting in local peripheral nerve cooling, and observe its impact on the pain of arterial puncture.To explore the local peripheral nerve cooling treatment can produce controllable and reversible analgesic effect even if away from the wound, and provide a new nonpharmaceutical analgesic mode for clinical.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
100

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Feb 2025

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

February 9, 2025

Completed
6 days until next milestone

Study Start

First participant enrolled

February 15, 2025

Completed
5 days until next milestone

First Posted

Study publicly available on registry

February 20, 2025

Completed
6 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 1, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 1, 2025

Completed
Last Updated

May 30, 2025

Status Verified

February 1, 2025

Enrollment Period

7 months

First QC Date

February 9, 2025

Last Update Submit

May 25, 2025

Conditions

Keywords

Skin coolingarterial punctureanalgesia

Outcome Measures

Primary Outcomes (1)

  • Visual Analogue Pain Scale (VAS) score of arterial puncture procedure

    The larger values of the Visual Analogue Pain Scale (VAS) score of local anesthetic injection and the Visual Analogue Pain Scale (VAS) score of arterial puncture catheterization were taken as the Visual Analogue Pain Scale (VAS) score of the process of arterial puncture catheterization.(VAS ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable)

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

Secondary Outcomes (23)

  • Pressure pain threshold

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

  • Pressure pain tolerance

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

  • The average perfusion

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

  • The median perfusion

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

  • The maximum perfusion

    From 0 to 3 hours after the volunteers enter the pre-anesthesia holding area.

  • +18 more secondary outcomes

Study Arms (4)

Skin cooling to 20°C

EXPERIMENTAL

The superficial skin of the right brachial plexus (superficial skin of the axillary artery at the junction of the right pectoralis major and biceps) cooled to 20°C for 15 minutes. After cooling, 1ml 2% lidocaine was injected into the superficial skin of the right radial artery. After local anesthesia, right radial artery puncture catheterization was performed. Immediately after the puncture, warm air at 35°C was applied to the cooling treatment area for 10 minutes, and the target temperature was the surface temperature of the area before cooling treatment.

Procedure: Skin cooling to 20°C

Skin cooling to 15°C

EXPERIMENTAL

The superficial skin of the right brachial plexus (superficial skin of the axillary artery at the junction of the right pectoralis major and biceps) cooled to 15°C for 15 minutes. After cooling, 1ml 2% lidocaine was injected into the superficial skin of the right radial artery. After local anesthesia, right radial artery puncture catheterization was performed. Immediately after the puncture, warm air at 35°C was applied to the cooling treatment area for 10 minutes, and the target temperature was the surface temperature of the area before cooling treatment.

Procedure: Skin cooling to 15°C

Skin cooling to 8°C

EXPERIMENTAL

The superficial skin of the right brachial plexus (superficial skin of the axillary artery at the junction of the right pectoralis major and biceps) cooled to 8°C for 15 minutes. After cooling, 1ml 2% lidocaine was injected into the superficial skin of the right radial artery. After local anesthesia, right radial artery puncture catheterization was performed. Immediately after the puncture, warm air at 35°C was applied to the cooling treatment area for 10 minutes, and the target temperature was the surface temperature of the area before cooling treatment.

Procedure: Skin cooling to 8°C

No skin cooling

PLACEBO COMPARATOR

The superficial skin of the right brachial plexus does not need to be cooled. After waiting 15 minutes, 1ml2% lidocaine was injected into the superficial skin of the right radial artery. After local anesthesia, right radial artery puncture catheterization was performed. There is no need to warm the radial artery after catheterization.

Procedure: No skin cooling

Interventions

According to the group, copper parts at a constant temperature of 20°C were placed on the superficial skin of the brachial plexus for 15 minutes.

Skin cooling to 20°C

According to the group, copper parts at a constant temperature of 15°C were placed on the superficial skin of the brachial plexus for 15 minutes.

Skin cooling to 15°C

According to the group, copper parts at a constant temperature of 8°C were placed on the superficial skin of the brachial plexus for 15 minutes.

Skin cooling to 8°C

According to the group, copper parts at room temperature (23°C) were placed on the superficial skin of the brachial plexus for 15 minutes.

No skin cooling

Eligibility Criteria

Sexall
Healthy VolunteersNo
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

  • \~ 65 years old;
  • ASA I-II level;
  • Patients with perioperative invasive arterial blood pressure monitoring;
  • Right-handed;
  • Allen test was normal (palm color quickly turned red or returned to normal within 10 seconds after release of ulnar artery pressure);
  • Participate voluntarily and be able to understand and sign informed consent.

You may not qualify if:

  • Patients with a history of musculoskeletal, vascular, neurological or psychiatric disorders;
  • Patients with a history of diabetes or other systemic diseases
  • Patients who used any analgesic medication within the month before and during the study;
  • Patients with a history of smoking, alcohol or drug addiction;
  • Paraesthesia, scar, redness, damage, rash, etc. exist in the skin of the patient in the test area;
  • Patients whose surgical area overlaps with the cooling treatment or puncture area;
  • Female subjects are menstruating.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

The Second Affiliated Hospital of Chongqing Medical University

Chongqing, Chongqing Municipality, 4000000, China

RECRUITING

MeSH Terms

Conditions

Acute PainAgnosia

Condition Hierarchy (Ancestors)

PainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsPerceptual DisordersNeurobehavioral ManifestationsNervous System Diseases

Study Officials

  • He Huang, ph.D

    The Second Affiliated Hospital, Chongqing Medical University

    STUDY CHAIR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: Prospective, randomized, patient-assessor blinded
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

February 9, 2025

First Posted

February 20, 2025

Study Start

February 15, 2025

Primary Completion

September 1, 2025

Study Completion

September 1, 2025

Last Updated

May 30, 2025

Record last verified: 2025-02

Data Sharing

IPD Sharing
Will share

The individual participant data for this study is available from the sponsor on reasonable request through email.

Shared Documents
STUDY PROTOCOL, SAP, ICF, CSR

Locations