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OpenTrials
Completed

NCT Number: NCT03277326

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

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

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Key information

Conditions

Arthroscopic Shoulder Surgery Interscalene Block Suprascapular Nerve Block

Age range

21 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Changi General Hospital

Singapore, 529889

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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)

Treatment and study plan

ISB

Procedure

ISB block with 0.5% ropivicaine 15mls ( 45mg )

aSSB

Procedure

aSSB block with 0.5% ropivicaine 15mls ( 45mg )

pSSB

Procedure

pSSB block with 0.5% ropivicaine 15mls ( 45mg )

Primary outcomes

  1. Pulmonary function

    Time frame: 2 years

    To assess the pulmonary function after performance of interscalene, anterior and posterior approaches to the suprascapular block

Secondary outcomes

  1. Analgesic effects and complications

    Time frame: 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)

Sponsors and collaborators

Lead sponsor

Changi General Hospital

Other

Registry information

Official study title

Randomised, Controlled Trial Comparing Interscalene Versus Anterior and Posterior Approaches of Suprascapular Nerve Block for Shoulder Arthroscopic Surgeries

Important dates

Study start
2017
Primary completion
2018
Study completion
2018
First posted
Sep 11, 2017
Registry last updated
May 7, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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