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Early Detection of Supraclavicular Brachial Plexus Block Failure Using Infrared Thermography and Perfusion Index

NCT07092891 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 80

Last updated 2025-07-30

No results posted yet for this study

Summary

Successful peripheral nerve blockade is fundamental to modern regional anesthesia, particularly for upper limb surgeries. Ensuring the efficacy of a nerve block early in the perioperative period is critical, as delayed recognition of block failure may lead to intraoperative pain, the need for additional sedation or general anesthesia, and overall poorer patient outcomes. Conventional methods for assessing block success, such as sensory testing with pinprick or cold stimuli and motor assessment using strength scales, require patient cooperation and often take 15-30 minutes to yield definitive results. These delays are especially limiting in fast-paced surgical environments or when early decisions regarding anesthesia management are necessary.

Emerging non-invasive monitoring technologies offer promising alternatives for the early, objective assessment of block efficacy. Infrared Thermography (IRT) measures skin surface temperature, which increases due to sympathetic nerve blockade-induced vasodilation.

Conditions

  • Regional Anaesthsia
  • Brachial Plexus Blocks

Interventions

PROCEDURE

Ultrasound-Guided Supraclavicular Block

Ultrasound-guided supraclavicular brachial plexus block using a high-frequency linear ultrasound probe-real-time visualization of the brachial plexus for precise anesthetic delivery.

DRUG

Bupivacaine Hydrochloride 0.5 % Injectable Solution

30 mL used for supraclavicular brachial plexus block

DEVICE

Ultrasound

Imaging for block placement

DEVICE

Infrared Thermography Camera

Skin temperature monitoring

DEVICE

Pulse Oximeter

Perfusion Index monitoring

Sponsors & Collaborators

  • Assiut University

    lead OTHER

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-08-15
Primary Completion
2026-08-01
Completion
2026-09-01

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07092891 on ClinicalTrials.gov