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Related Experiment Videos

Routine transesophageal echocardiography for cerebral ischemia. Is it really necessary?

M F Warner1, K I Momah

  • 1Hoffman Heart Institute of Connecticut, St Francis Hospital and Medical Center, Hartford, USA.

Archives of Internal Medicine
|August 12, 1996
PubMed
Summary

Transesophageal echocardiography (TEE) detects cardiac embolic sources in 35% of patients with ischemic events. Routine TEE may not be cost-effective, as findings often lack specific treatment recommendations beyond aspirin or warfarin.

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Area of Science:

  • Cardiology
  • Neurology
  • Diagnostic Imaging

Background:

  • Transesophageal echocardiography (TEE) is frequently used for stroke evaluation, often ordered by neurologists without prior transthoracic echocardiography.
  • TEE is considered superior to transthoracic echocardiography for detecting cardiac sources of embolism.

Purpose of the Study:

  • To evaluate the diagnostic yield and cost-effectiveness of routine TEE in patients presenting with cerebral ischemic events.

Main Methods:

  • A retrospective review of 106 patients who underwent TEE for cerebral ischemic events over a 2-year period.
  • TEE utilized biplane or omniplane transducers with Doppler color flow imaging and saline contrast.
  • Studies and hospital charts were analyzed for cardiac/aortic embolic sources and clinical information.

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Main Results:

  • A potential cardiovascular embolic source was identified in 35% of patients.
  • Abnormalities were more frequent in patients with atrial fibrillation (53%) compared to those in sinus rhythm (28%).
  • Left atrial thrombus and spontaneous contrast were strongly associated with atrial fibrillation; aortic debris was common in sinus rhythm.

Conclusions:

  • Routine TEE may not be cost-effective for all patients with ischemic events.
  • Findings in atrial fibrillation patients often support warfarin therapy, while those in sinus rhythm may only warrant aspirin or have no clear therapeutic indication.
  • The study suggests a more selective approach to TEE in this population.