Hyperventilation Syndrome in a Very Old Woman.

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  • Teramoto Shinji
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Sugai Masao
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Saito Erika
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Matsuse Takeshi
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Eto Masato
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Toba Kenji
    Department of Geriatrics, Faculty of Medicine, University of Tokyo
  • Ouchi Yasuyoshi
    Department of Geriatrics, Faculty of Medicine, University of Tokyo

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  • 超高齢女性に発症した過換気症候群の１例

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Abstract

A 92-year-old woman was admitted to our hospital due to hypertension, nausea, pain in the anterior part of the chest, epigastralgia, and tachypnea. During the initial examination of the patient in the emergency ward, she was very excited, howled, and both her hands were numb. Arterial blood gas analysis revealed a marked alkalemia (pH greater than 7.55) and hypocapnia (PCO<sub>2</sub> 24.1mmHg). After paper bag re-breathing, the pH and PCO<sub>2</sub> were within normal limits. Because there was no lesion in the lungs or the brain that would account for hyperventilation and convulsions, the attack was considered to be a manifestation of hyperventilation syndrome. This case suggests that hyperventilation syndrome should be carefully considered in the differential diagnosis of disturbance of consciousness even in elderly patients.

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