Can saline injection protect phrenic nerve? - A randomised controlled study.

ABSTRACT:

Background and aims

Various methods were attempted to reduce the incidence of phrenic nerve palsy during interscalene brachial plexus nerve block. Mechanism of phrenic palsy was presumed to be due to the spread of local anaesthetic anterior to the anterior scalene muscle. We hypothesised that by injecting saline in this anatomical location prior to performing an interscalene block might reduce the incidence of phrenic palsy.

Methods

This was a double-blinded randomised controlled study performed in a single-centre, university-teaching hospital. A total of 36 patients were randomised to either group C (conventional group) or group S (saline group). Ultrasound-guided interscalene block was administered with 20 ml of 0.25% levo-bupivacaine in both groups. Ten ml of normal salin

SUBMITTER: Srinivasan KK 

PROVIDER: S-EPMC8252997 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature