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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
08:10

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Atrial fibrillation. Left atrial fibrosis--a promising stroke risk factor?

Fiorenzo Gaita1, Alessandro Blandino

  • 1Cardiology Division, Department of Internal Medicine, San Giovanni Battista Hospital, Corso Bramante 88, Turin, Italy. gaitaf@libero.it

Nature Reviews. Cardiology
|April 20, 2011
PubMed

Insights

Left atrial fibrosis, identified via MRI, is linked to stroke history in atrial fibrillation patients. Incorporating histopathological data improves stroke risk assessment beyond clinical factors alone.

Area of Science:

  • Cardiology
  • Radiology
  • Pathophysiology

Background:

  • Current stroke risk stratification for atrial fibrillation primarily relies on clinical data.
  • The role of left atrial pathophysiological properties, such as fibrosis, is underappreciated in predicting stroke risk.

Discussion:

  • Left atrial fibrosis, visualized using delayed-enhancement MRI, demonstrates a significant association with a prior history of stroke.
  • This finding underscores the importance of integrating histopathological information into stroke risk models.

Key Insights:

  • Left atrial fibrosis detected by MRI is a novel biomarker for stroke risk in atrial fibrillation.
  • Histopathological assessment complements clinical scoring systems like CHADS2-VASc.

Outlook:

  • Future research should explore the prognostic value of left atrial fibrosis in predicting future stroke events.
  • Developing targeted therapies based on atrial fibrosis could mitigate stroke risk in atrial fibrillation patients.

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