Does Saline Injection Around Phrenic Nerve Reduce Incidence of Diaphragmatic Paresis Following Interscalene Block?

• Status: Completed
• Trial end date: 2019-11-01
• Target enrollment: 0
• Participant gender: All

Summary

Hemi-diaphragmatic palsy is a common undesirable effect of interscalene block, with an incidence of up to 100%. Mechanism of palsy is thought to be related to spread of local anaesthetic anterior to the anterior scalene muscle. We hypothesize that by injecting saline in this anatomical location prior to performing an interscalene block the incidence of phrenic palsy will be reduced.

• Phase: Phase 4
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: The Adelaide and Meath Hospital, incorporating The National Children's Hospital
• Treatments: Levobupivacaine

Criteria

Inclusion Criteria:

• Patients undergoing surgery on shoulder, humerus, or clavicle

Exclusion Criteria:

• Patient refusal

• Allergy to local anaesthesia

• Severe coagulopathy

• Contralateral phrenic nerve palsy

• Local infection

• Moderate to severe pulmonary dysfunction (GOLD II, II, IV)