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Related Experiment Videos

Left atrial appendage function in patients with atrial flutter

H Omran1, W Jung, R Rabahieh

  • 1Department of Medicine, University of Bonn, Germany.

Heart (British Cardiac Society)
|December 10, 1997
PubMed
Summary
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Patients with atrial flutter and intermittent atrial fibrillation show depressed left atrial appendage function and increased spontaneous echo contrast, indicating a higher thromboembolic risk compared to pure atrial flutter.

Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Atrial flutter can be associated with atrial fibrillation, a known risk factor for thromboembolic events.
  • Echocardiographic markers may help differentiate thromboembolic risk in these patients.

Purpose of the Study:

  • To compare echocardiographic markers of thromboembolic risk between patients with pure atrial flutter and those with atrial flutter and intermittent atrial fibrillation.

Main Methods:

  • Prospective 12-month follow-up of patients with atrial flutter to detect intermittent atrial fibrillation.
  • Transthoracic and transesophageal echocardiography to assess left atrial and appendage dimensions, emptying velocities, and emptying fraction.
  • Evaluation for spontaneous echo contrast.

Main Results:

Related Experiment Videos

  • Patients with atrial flutter and intermittent atrial fibrillation had significantly larger left atrial chamber and appendage areas compared to those with pure atrial flutter.
  • Lower left atrial appendage emptying fractions and velocities were observed in patients with intermittent atrial fibrillation.
  • A higher incidence of spontaneous echo contrast was noted in patients with atrial flutter and intermittent atrial fibrillation.

Conclusions:

  • Left atrial appendage function is impaired in patients with atrial flutter and intermittent atrial fibrillation.
  • Increased spontaneous echo contrast suggests a higher thromboembolic risk in this subgroup.
  • These findings support the need for adequate anticoagulant therapy in patients with atrial flutter and intermittent atrial fibrillation.