Interscalene vs Anterior and Posterior Suprascapular Nerve Block for Shoulder Arthroscopic Surgeries

Not Applicable

Completed

• Conditions: Arthroscopic Shoulder Surgery; Interscalene Block; Suprascapular Nerve Block
• Interventions: Procedure: aSSB; Procedure: pSSB; Procedure: ISB

• Registration Number: NCT03277326
• Lead Sponsor: Changi General Hospital

Brief Summary

To compare ISB vs anterior and posterior approaches of suprascapular block in terms of lung function and analgesia

Detailed Description

Interscalene block (ISB) is commonly used to provide pain control for shoulder surgeries. However, it is associated with several side effects, in particular, a high incidence of phrenic nerve blockade.

The suprascapular nerve block (SSB) has been proposed as an alternative to the ISB as it has a lower likelihood of causing phrenic nerve blockade. There are 2 commonly used approaches for the suprascapular nerve block, anterior and posterior. The anterior approach may still result in some degree of impairment of lung function.

The primary aim is to assess the pulmonary function after performance of ISB, aSSB and pSSB. Secondary outcomes are analgesic effects and incidence of adverse effects of these blocks.

Study Timeline

• Study Start: 2017-08-30
• Study First Submitted: 2017-09-07
• Study First Submitted QC: 2017-09-07
• Study First Posted: 2017-09-11
• Primary Completion: 2018-06-11
• Study Completion: 2018-07-07
• Status Verified: 2019-05
• Last Update Submitted: 2019-05-05
• Last Update Posted: 2019-05-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 60

Inclusion Criteria

• Patients scheduled for elective arthroscopic shoulder surgery under general anaesthesia
• Patients 21 years old and above
• American Society of Anesthesiologists (ASA) physical status 1 to 3
• BMI 18-35 kg/m2

Exclusion Criteria

• Patients unable to give consent or inability to communicate/ cooperate
• Patients with chronic use of strong opioids (morphine, oxycodone)
• Patients with allergy to local anaesthetics or any drugs included in the study
• Patients with contraindications for regional anaesthesia such as coagulopathy
• Patients with pre-existing neurological deficits in upper limb/ phrenic nerve palsy
• Patients with pre-existing lung disease (COPD, uncontrolled asthma)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
aSSB	aSSB	Anterior Suprascapular Block
pSSB	pSSB	Posterior Suprascapular Block
ISB	ISB	Interscalene brachial plexus block

Primary Outcome Measures

Name	Time	Method
Pulmonary function	2 years	To assess the pulmonary function after performance of interscalene, anterior and posterior approaches to the suprascapular block

Secondary Outcome Measures

Name	Time	Method
Analgesic effects and complications	2 years	Analgesic effect (pain scores, opioid consumption, opioid related side effects), degree of motor blockade and incidence of adverse effects of blocks (Horner's syndrome, hoarseness of voice)

Trial Locations

Locations (1)

Changi General Hospital; 🇸🇬 Singapore, Singapore