Mutations in a potassium channel (Kir2.6) causes susceptibility to thyrotoxic hypokalemic periodic paralysis

Devon P. Ryan, Magnus R. Dias da Silva, Tuck Wah Soong, Bertrand Fontaine, Matt R. Donaldson, Annie W.C. Kung, Wallaya Jongjaroenprasert, Mui Cheng Liang, Daphne Hc Khoo, Jin Seng Cheah, Su Chin Ho, Harold S. Bernstein, Rui M.B. Maciel, Robert H. Brown, Louis J. Ptáček

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Hypolalemic periodic paralysis is an uncommon complication of thyrotoxicosis. It usually affects men of Oriental origin and presents with acute and profound muscle weakness especially of the lower extremities. We report a 46 year old man from Kuwait with sudden paralysis of both legs. Physical examination showed signs of thyrotoxicosis and laboratory tests revealed severe hypokalemia, very low serum thyroid-stimulating hormone and very high free thyroxin. The motor deficit regressed within 8 hours of 80 mmol of KCI infusion. Awareness of such a problem is essential to avoid life threatening cardiac arrhythmia. Once recognized the treatment is simple and the prognosis is excellent.

Original languageEnglish
Pages (from-to)70-72
Number of pages3
JournalQatar Medical Journal
Volume9
Issue number2
DOIs
StatePublished - 2000
Externally publishedYes

Keywords

  • Hypokalemia-Periodic Paralysis
  • Thyrotoxicosis-Thyroxin

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