Single injection combined suprascapular and axillary nerve block: A randomised controlled non‐inferiority trial in healthy volunteers
Primary resultResult — go to the resultRatio of event rates 1.15 95% CI 0.88–1.51Authors' conclusion
For our primary outcome, the 95% CI of the difference of event ratio included the non-inferiority margin. We are therefore unable to conclude that 5 ml LA is non-inferior to 20 ml LA with respect to block success rate.
Study context
- Population
- Healthy volunteers
- Participants
- 16 vs 16
- Comparison
- 5 ml vs 20 ml
- 5 mln = 16
- 20 mln = 16reference
- Primary endpoint
- Successful shoulder block (cutaneous sensory affection of the axillary nerve and motor affection of the suprascapular nerve, >50% reduction in external rotation force by dynamometry)
Methodological detailsnon-inferiority, healthy volunteers, ultrasound guided
- Non-inferiority
- Healthy volunteers
- Ultrasound guided
Primary result
As reported in the abstract
Ratio of event rates
1.15
95% CI 0.88–1.51
Events by treatment group
Secondary outcomes
Change in lung function (spirometry)
- All mean reductions in lung function parameters non-significantly lower in the 5 ml group vs the 20 ml group
Original publication
Single injection combined suprascapular and axillary nerve block: A randomised controlled non‐inferiority trial in healthy volunteers. Acta Anaesthesiol Scand. Published 1 October 2022. doi:10.
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