Arthroscopic Shoulder Surgery, Interscalene Block, Suprascapular Nerve Block
Conditions
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.
Interventions
PROCEDUREISB
ISB block with 0.5% ropivicaine 15mls ( 45mg )
PROCEDUREaSSB
aSSB block with 0.5% ropivicaine 15mls ( 45mg )
PROCEDUREpSSB
pSSB block with 0.5% ropivicaine 15mls ( 45mg )
Sponsors
Changi General Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
21 Years to No maximum
Healthy volunteers
No
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)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Pulmonary function | 2 years | To assess the pulmonary function after performance of interscalene, anterior and posterior approaches to the suprascapular block |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 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) |
Countries
Singapore
Outcome results
None listed