Horner's syndrome after supraclavicular nerve block through catheter - A rare case report

ABSTRACT: Horner’s syndrome happens due to ipsilateral sympathetic cervical chain paralysis that maybe caused by surgery, drugs specially with high concentrations of local anesthetics, compression on the chain by hematoma or tumor, also inadequate positioning of the patient during the surgery. incidence rate is 100% in patients undergoing brachial plexus interscalene block and can rarely in patients with other types of blocks as supraclavicular blocks. Keywords: Horner’s syndrome, ipsilateral sympathetic, cervical chain