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J R Soc Med. 1987 February; 80(2): 74–76.
PMCID: PMC1290673

Hyperthyroidism in elderly patients with atrial fibrillation and normal thyroid hormone measurements.


The results of a study to investigate possible underdiagnosis of hyperthyroidism in the elderly are reported. Four out of 24 patients with atrial fibrillation for which there was no obvious cause and who had normal thyroid hormone measurements were found to have subnormal thyrotropin responses to thyrotropin-releasing hormone and abnormal thyroid scans. The implications of this finding are discussed.

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Selected References

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  • Symons C. Thyroid heart disease. Br Heart J. 1979 Mar;41(3):257–262. [PMC free article] [PubMed]
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  • Davies AB, Williams I, John R, Hall R, Scanlon MF. Diagnostic value of thyrotrophin releasing hormone tests in elderly patients with atrial fibrillation. Br Med J (Clin Res Ed) 1985 Sep 21;291(6498):773–776. [PMC free article] [PubMed]
  • Caldwell G, Kellett HA, Gow SM, Beckett GJ, Sweeting VM, Seth J, Toft AD. A new strategy for thyroid function testing. Lancet. 1985 May 18;1(8438):1117–1119. [PubMed]

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