Is Perfusion Index an Indicator of Block Success in Ultrasound-guided Infraclavicular Brachial Plexus Block

Bakirkoy Dr. Sadi Konuk Training and Research Hospital

Status: Completed

Conditions: Carpal Tunnel Syndrome; Perfusion Index

Treatments: Procedure: Infraclavicular nerve block; Procedure: Without nerve block

Study type: Interventional

Funder types: Other

Identifiers

NCT04921891

2014-86

Details and patient eligibility

About

The infraclavicular nerve block, which is frequently preferred in upper extremity surgeries, provides additional advantages such as reduction in opioid consumption by providing analgesic effect in the postoperative period as welll. The success of peripheral nerve blocks is usually assessed by subjective feedback from the patient, and patient cooperation is needed. The aim of this study is to assess whether the perfusion index level, which can be measured noninvasively, can be a predictor of the infraclavicular block success.

Full description

Thirty patients who were operated on for carpal tunnel syndrome under infraclavicular brachial plexus block were included in our study. After the procedure, at 10-minute intervals, the sensory block was assessed by a pinprick test, and the motor block was assessed by the ability to flex the hand and the forearm. In addition, PI and skin temperature were measured 0-10-20-30 minutes after the block and at postoperative 2, 4, and 6 hours. 30 minutes after the measurements, the surgical procedure was allowed to begin in patients with successful block.

Enrollment: 30 patients

Sex: All

Ages: 18 to 75 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Ages of 18-75
• Patients who will diagnose with carpal tunnel syndrome by electroneuromyography (ENMG), and will undergo unilateral surgery under elective conditions
• ASA I-II-III patients

Exclusion criteria

• Patients who will refuse this method
• Neurological deficits,
• Diabetes mellitus,
• Local anesthetic allergy,
• Morbidly obese,
• Peripheral vascular disease, coronary artery disease, or coagulopathy

Trial design

Primary purpose: Supportive Care

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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30 participants in 2 patient groups

Blocked arm

Active Comparator group

Description:

The investigators performed an infraclavicular nerve block to the operated arm group to provide anesthesia.

Treatment:

Procedure: Infraclavicular nerve block

Unblocked arm

Active Comparator group

Description:

The upper extremity without block was assigned as the control group, and a comparison was made between the two upper extremities.

Treatment:

Procedure: Without nerve block