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A Case of Metabolic Alkalosis due to Pyloric Stenosis Associated with Hyperventilation Attack Tsutomu Araki 1 , Shogo Nishihara 1 , hiroaki Takimoto 1 , Yohei Tofuku 1 1Department of Internal Medicine, Saiseikai Kanazawa Hospital Keyword: 代謝性アルカローシス , 代償性高CO2血症 , 過換気発作 , metabolic alkalosis , compensatory hypercapnia , hyperventilation attack pp.1025-1028
Published Date 2001/10/15
DOI https://doi.org/10.11477/mf.1404902369
  • Abstract
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 A 26-year-old woman was admitted because of hyperventilation attack. Arterial blood gas analyses revealed metabolic alkalosis (pH 7.536. HCO3- 35.7mEq/l, Base excess +12.9mEq/l) with normocapnia (PCO2 42.2 mmHg) during attack and marked hypercapnia (PCO2 60.9mmHg) after attack. Based on the persistence of vomiting before admission and laboratory data on admission (dehydration, hypokalemia and hypochloremia), metabolic alkalosis due to gastric juice losses and compensatory hypercapnia were diagnosed. Gastroscopy and gastography revealed pyloric stenosis with ulcers, which was the cause of the vomiting. Arterial blood gas analysis findings were normalized (pH 7.388, PCO2 42.0mmHg, HCO3- 25.3mEq/l, Base excess +0.7 mEq/l) ten days after admission by intravenous infusion of saline plus KCI and oral administration of antiulcer drugs. This is a rare case of metabolic alkalosis associated with hyperventilation attack, and compensatory hypercapnia is thought to have been transiently pseudonormalized by hyperventilation to normocapnia on admission.


Copyright © 2001, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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