Motor Peripheral Neuropathy Involved Bilateral Lower Extremities Following Acute Carbon Monoxide Poisoning: A Case Report

급성 일산화탄소 중독 환자에서 발생한 양하지 말초 운동신경병증 1례

  • Choi, Jae-Hyung (Department of Emergency Medicine, College of Medicine, Soonchunhyang University) ;
  • Lim, Hoon (Department of Emergency Medicine, College of Medicine, Soonchunhyang University)
  • 최재형 (순천향대학교 의과대학 부천병원 응급의학과) ;
  • 임훈 (순천향대학교 의과대학 부천병원 응급의학과)
  • Received : 2015.05.21
  • Accepted : 2015.06.07
  • Published : 2015.06.30

Abstract

Carbon monoxide (CO) intoxication is a leading cause of severe neuropsychological impairments. Peripheral nerve injury has rarely been reported. Following are brief statements describing the motor peripheral neuropathy involved bilateral lower extremities of a patient who recovered following acute carbon monoxide poisoning. After inhalation of smoke from a fire, a 60-year-old woman experienced bilateral leg weakness without edema or injury. Neurological examination showed diplegia and deep tendon areflexia in lower limbs. There was no sensory deficit in lower extremities, and no cognitive disturbances were detected. Creatine kinase was normal. Electroneuromyogram patterns were compatible with the diagnosis of bilateral axonal injury. Clinical course after normobaric oxygen and rehabilitation therapy was marked by complete recovery of neurological disorders. Peripheral neuropathy is an unusual complication of CO intoxication. Motor peripheral neuropathy involvement of bilateral lower extremities is exceptional. Various mechanisms have been implicated, including nerve compression secondary to rhabdomyolysis, nerve ischemia due to hypoxia, and direct nerve toxicity of carbon monoxide. Prognosis is commonly excellent without sequelae. Emergency physicians should understand the possible-neurologic presentations of CO intoxication and make a proper decision regarding treatment.

Keywords

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