Chinese Journal of Pharmacovigilance ›› 2023, Vol. 20 ›› Issue (6): 709-711.
DOI: 10.19803/j.1672-8629.20220225

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One case of hyponatremia encephalopathy caused by compound polyethylene glycol electrolyte powder (Ⅱ)

XIE Anjie, WANG Changde*, CHEN Hui, ZHANG Shiqiang   

  1. Department of Neurology, Shanghai Integrated Traditional Chinese and Western Medicine Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
  • Received:2022-05-06 Online:2023-06-15 Published:2023-06-15

Abstract: Objective To explore the clinical characteristics, diagnosis and treatment of hyponatremia caused by compound polyethylene glycol electrolyte powder (Ⅱ) . Methods One case of hyponatremia caused by compound polyethylene glycol electrolyte powder (Ⅱ) was analyzed, and the related literature was summarized. Results A 62-year-old lady was hospitalized for colonoscopy due to “colonic polyps”. She drank 4 bags (68.56 g/bag) of compound polyethylene glycol electrolyte powder (Ⅱ) dissolved in 4 000 mL of warm water. Eighteen hours after treatment, the patient lost consciousness and developed convulsion of the right lower limb and urinary incontinence. Quick examination showed that blood sodium was 114 mmol·L-1. Plain CT scan of the head revealed global brain edema so that the patient was diagnosed with hyponatremia encephalopathy. After 5 hours of symptomatic treatment, the patient opened her eyes without speaking. On the third day, the patient regained consciousness, blood electrolytes returned to normal, and there were no more limb convulsions. Conclusion After polyethylene glycol powder is prescribed, clinicians should pay attention to the changes of electrolytes and other clinical complications.

Key words: polyethylene glycol electrolyte powder (Ⅱ), hyponatremia encephalopathy, epilepsy, electrolyte, low sodium, low potassium, adverse drug reaction

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