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Subclinical hyperthyroidism is a risk factor for poor functional outcome after ischemic stroke

Frank Arne Wollenweber1, Vera Zietemann, Andreas Gschwendtner

  • 1Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University, Marchioninistr. 15, 81377 Munich, Germany.

Stroke
|March 14, 2013
PubMed

Insights

Subclinical hyperthyroidism increases the risk of poor functional outcomes after ischemic stroke. This condition is linked to greater disability and dependency three months post-stroke.

Area of Science:

  • Endocrinology
  • Neurology
  • Cardiovascular Medicine

Background:

  • Subclinical hyperthyroidism is linked to adverse cardiovascular events like stroke.
  • The impact of subclinical hyperthyroidism on stroke functional outcomes is not well understood.

Purpose of the Study:

  • To investigate the association between subclinical thyroid dysfunction and functional outcomes after ischemic stroke.
  • To determine if subclinical hyperthyroidism is a risk factor for poor recovery post-stroke.

Main Methods:

  • 165 ischemic stroke patients were prospectively studied.
  • Patients were categorized into subclinical hyperthyroidism, subclinical hypothyroidism, and euthyroid groups based on thyroid-stimulating hormone levels.
  • Functional outcomes (modified Rankin Scale, Barthel Index) were assessed at 3 months post-stroke.

Main Results:

  • Subclinical hyperthyroidism was present in 11.5% of patients.
  • Patients with subclinical hyperthyroidism showed a significantly increased risk of functional disability (OR, 3.95) and dependency (OR, 9.12) at 3 months.
  • These associations remained significant after adjusting for multiple confounders.

Conclusions:

  • Subclinical hyperthyroidism is an independent risk factor for poor functional outcomes following ischemic stroke.
  • Early detection and management of subclinical thyroid dysfunction may be crucial for stroke recovery.
Abstract

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