NCT04925505

Perfusion Index for Predicting Brachial Plexus Block Success Under General Anesthesia

Usefulness of Pulse Oximeter Perfusion Index for Predicting the Success of Interscalene Brachial Plexus Blockade Under General Anesthesia

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 70 (actual)
• Sponsor: Korea University Guro Hospital · Academic / Other
• Sex: All
• Age: 20 Years – 70 Years
• Healthy volunteers: Not accepted

Summary

This study was designed to determine whether the success or failure of interscalene brachial plexus block under general anesthesia can be predicted using perfusion index (PI).

Detailed description

The success of peripheral nerve blocks is usually evaluated by assessment of sensory and motor function; however, this method cannot be applied in the patient who has uncheckable mental status, e.g. general anesthesia, or who is uncommunicable, e.g. different language user. The perfusion index (PI) is a numerical value for the ratio between pulsatile and non-pulsatile blood flow measured by a special pulse oximeter, and PI had been proved as a useful tool for evaluation of successful supraclavicular nerve block in awake patients as an objective method. With the use of ultrasound guidance in skilled hands, it is a reasonable option to perform neuraxial and peripheral regional blocks in sedated or anesthetized patients. However, there has been no evidence of applying PI for predicting the success of nerve block in general anesthetized patients.

Conditions

• Disorder of Shoulder

Interventions

Type	Name	Description
PROCEDURE	Interscalene brachial plexus blocks with ultrasound guidance under general anesthesia	Ultrasound-guidance, interscalene brachial plexus blocks, in-plane technique, perineural injection, 0.5% ropivacaine 12.5ml and 0.2% lidocaine 12.5ml

Timeline

• Start date: 2021-06-03
• Primary completion: 2024-05-27
• Completion: 2024-07-05
• First posted: 2021-06-14
• Last updated: 2025-01-03

Locations

1 site across 1 country: South Korea