Effects of Atrial Fibrillation Screening According to Thyroid Function: Post Hoc Analysis of the Randomized LOOP Study - Summary - MDSpire

Effects of Atrial Fibrillation Screening According to Thyroid Function: Post Hoc Analysis of the Randomized LOOP Study

  • By

  • Daniel Camillo Spona

  • Diana My Frodi

  • Lucas Yixi Xing

  • Emilie Katrine Kongebro

  • Ketil Jørgen Haugan

  • Claus Graff

  • Søren Højberg

  • Derk Krieger

  • Axel Brandes

  • Lars Køber

  • Morten S Olesen

  • Andreas Andersen

  • Sofie Hædersdal

  • Ruth Frikke-Schmidt

  • Jesper Hastrup Svendsen

  • Søren Zöga Diederichsen

  • September 4, 2024

  • 0 min

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Objective:

To explore the effects of atrial fibrillation (AF) screening based on thyroid-stimulating hormone (TSH) levels and its impact on stroke risk, particularly in identifying patients who may benefit from screening.

Key Findings:
  • AF detection was approximately three times higher in the ILR group compared to usual care across TSH tertiles.
  • In the lowest TSH tertile, screening was associated with a reduced risk of stroke or SE (HR 0.52) and cardiovascular death (HR 0.54).
  • No significant effects were observed in participants with higher TSH levels.
Interpretation:

Low TSH levels may indicate a greater benefit from AF screening in reducing stroke risk, while higher TSH levels may not provide the same advantage, suggesting a need for tailored screening strategies.

Limitations:
  • Findings are exploratory and require further validation.
  • The study design was not prespecified for TSH analysis, which may introduce biases.
Conclusion:

TSH may serve as a useful marker to identify patients who could benefit from AF screening, potentially reducing the risk of overdiagnosis and overtreatment.

Original Source(s)

Effects of Atrial Fibrillation Screening According to Thyroid Function: Post Hoc Analysis of the Randomized LOOP Study

  • by Daniel Camillo Spona, Diana My Frodi, Lucas Yixi Xing, Emilie Katrine Kongebro, Ketil Jørgen Haugan, Claus Graff, Søren Højberg, Derk Krieger, Axel Brandes, Lars Køber, Morten S Olesen, Andreas Andersen, Sofie Hædersdal, Ruth Frikke-Schmidt, Jesper Hastrup Svendsen, Søren Zöga Diederichsen

  • September 4, 2024

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