Abstract
Fifteen cases with motor paresis were operated on to implant electrodes for functional electrical stimulation. Motor paresis were caused by cerebral infarction (6 cases), intracere-bral hemorrhage (3 cases), spinal cord injury (4 cases), amyotrophic lateral sclerosis (2 cases). In every case with a distinct origin of paresis, depolarizing muscle relaxants may induce dangerous hyperkalemia. In cases with lower motor neuron lesions, non-depolariz-ing muscle relaxants may cause prolonged neuromuscular blockade. Further, care should be taken regarding cardiovascular changes due to autonomic nervous system disorders ac-companying to motor neuron lesion.
