A clinical observation of deltoid motor response in interscalene brachial plexus block in children

Objective To provide a clinical reference that deltoid motor response be an endpoint in interscalene brachial plexus block with PNS in children.Methods Sixty children scheduled for upper limbs surgery under interscalene brachial plexus block with PNS were randomly divided into group A:endpoint of deltoid motor response; group B:endpoint of biceps motor response;group C:endpoint of deltoid and biceps motor response.The threshold current of stimulation,time to acquirement of endpoint,time to onset of motor block in cooperative children and effect of nerve block were compared among the groups.Results The threshold current of stimulation,time to onset of motor block in cooperative children and effect of nerve block had no significant difference among the groups (P0.05).Time to acquirement of endpoint in groups A and B was significantly longer than in group C (P0.05).Conclusion Deltoid motor response endpoint can indicate accurate needle placement in interscalene brachial plexus block in children.