Combined Suprascapular and Axillary Nerve Blocks for Arthroscopic Shoulder Surgery

Not Applicable

Completed

• Conditions: Axillary Nerve Block; Arthroscopic Shoulder Surgery; Suprascapular Nerve Block
• Interventions: Procedure: Suprascapular nerve- axillary nerve block combination; Procedure: Subacromial infiltration

• Registration Number: NCT03212443
• Lead Sponsor: Diskapi Teaching and Research Hospital

Brief Summary

Arthroscopic shoulder surgery is associated with severe pain postoperatively. Regional nerve block adding to general anesthesia might improve the quality of postoperative analgesia. The aim of the study is to compare the subacromial local anesthetic infiltration and the suprascapular-axillary nerve blocks combination for intraoperative sevoflurane consumption, postoperative analgesia and analgesic consumption.

Detailed Description

After informed consent and with ethics approval, 60 ASA 2-3 patients scheduled for elective arthroscopic shoulder surgery will be included in this study. Patient will be divided to two groups by using computer -generated list for randomization. In group A, the surgeon will apply 20 ml of 0.250% bupivacaine to the subacromial region at the end of the procedure. In Group B, suprascapular (10 ml of 0.250% bupivacaine ) and axillary block (10 ml of 0.250% bupivacaine) will be performed with ultrasound and nerve stimulator guidance before induction of anesthesia. In all patients after standard and BIS (Bi spectral index) monitorization general anesthesia will be induced with remifentanil (10mcg iv), propofol (2.5 mg/kg iv) and rocuronium (0.5mg/kg iv). After intubation, anesthesia will be maintained with 50% O2 and N2O mixture. Hemodynamic parameters, BIS values, end-tidal sevoflurane consumption will be recorded by blind investigator. Postoperative visual analog scale (VAS) values, postoperative analgesic consumption (Tramadol, patient controlled analgesia), complications will be recorded.

Study Timeline

• Study First Submitted: 2017-07-04
• Study First Submitted QC: 2017-07-06
• Study First Posted: 2017-07-11
• Study Start: 2017-08-10
• Primary Completion: 2018-02-25
• Study Completion: 2018-03-22
• Status Verified: 2018-08
• Last Update Submitted: 2018-08-06
• Last Update Posted: 2018-08-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 46

Inclusion Criteria

• American society of anesthesia physical status (ASA) 1,2 patients
• Elective arthroscopic shoulder surgery

Exclusion Criteria

• ASA 3,4 patients
• Coagulation abnormality
• Body mass index >30
• Preexisting neurological deficit Local anesthetic allergy history Diabetes

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Group B	Suprascapular nerve- axillary nerve block combination	In Group B, suprascapular (10 ml of 0.250% bupivacaine ) and axillary block (10 ml of 0.250% bupivacaine) will be performed with ultrasound and nerve stimulator guidance before induction of anesthesia
Group A	Subacromial infiltration	In group A, the surgeon will apply 20 ml of 0.250% bupivacaine to the subacromial region at the end of the procedure

Primary Outcome Measures

Name	Time	Method
Postoperative VAS scores	Through postoperative period, an avarage of 30 minutes	Ranging from 0: no pain to 10: worst pain

Secondary Outcome Measures

Name	Time	Method
sevoflurane consumption	5th, 10th,20th,30th,40th,50th minutes after induction of anesthesia	End tidal sevoflurane concentration values assesment during the surgery

Trial Locations

Locations (1)

Derya Ozkan; 🇹🇷 Ankara, Turkey