Myoclonus-like involuntary movements under subarachnoid block completely subsided after midazolam administration in a patient undergoing cesarean section: a case report

Involuntary movement during and after neuraxial anesthesia, such as spinal and epidural anesthesia, is rarely observed. In this report, we describe a case of myoclonus-like involuntary movement of the upper extremities in a patient undergoing a planned repeat cesarean section under spinal anesthesia with bupivacaine that completely subsided after 2mg midazolam administration. The myoclonus-like movement never recurred or caused any apparent neurological side effects. No abnormal sensation or spontaneous pain of the upper extremities was observed. The patient was discharged on foot on post-operative day 3.