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Pure motor monoparesis of the leg after carbon monoxide intoxication
  1. Yasutaka Tajima,
  2. Chika Satoh,
  3. Hiroaki Yaguchi,
  4. Yasunori Mito
  1. Department of Neurology, Brain Science Center, Sapporo City General Hospital, Sapporo, Japan
  1. Correspondence to Dr Yasutaka Tajima, Department of Neurology, Brain Science Center, Sapporo City General Hospital, N11 W13 Chu-o-ku, Sapporo 060-8604, Japan; yasutaka.tajima{at}doc.city.sapporo.jp

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A woman in her late 40s with no medical history presented as comatose (Glasgow Coma Scale (GCS) score, 8) after a suicide attempt, where she inhaled the fumes of burning charcoal for approximately 4 h. On admission, her blood pressure was 108/70 mm Hg, and her heart rate was 118 bpm. Her carbon monoxide (CO)–haemoglobin concentration was 34%. Blood examinations did not show any evidence of drug overdose. Supportive mechanical ventilation was employed, and she became alert after 48 h. A physical examination revealed no abnormal findings except for left leg weakness, and a neurological examination demonstrated hyperactive left knee tendon and Achilles tendon reflexes. The plantar reflex was easily elicited on the left side. She could not move her left knee or ankle joints (manual …

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