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Updated: May 26, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation

Published on: February 28, 2012

The missing left atrial appendage.

Niamh M Kilcullen¹, James K H Woo, Suhny Abbara

¹Division of Cardiology, Massachusetts General Hospital, 55 Fruit Street, Boston, MA 02114, USA. niamhkilcullen@doctors.org.uk

Journal of Cardiovascular Computed Tomography

|January 4, 2012

Summary

This summary is machine-generated.

A transesophageal echocardiogram (TEE) failed to visualize a patient's left atrial appendage. Cardiac CT confirmed its presence, underscoring the need for multimodality imaging in complex congenital heart disease.

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Area of Science:

Cardiology
Medical Imaging

Background:

A 34-year-old man with a history of repaired tetralogy of Fallot, Stickler syndrome, and multiple cardiac surgeries (mitral, pulmonary, and tricuspid valves) was evaluated.
The patient was scheduled for biventricular ICD implantation and DC cardioversion, necessitating exclusion of left atrial and appendage thrombus.

Observation:

Transesophageal echocardiogram (TEE) was performed to assess for thrombus.
The left atrial appendage was not visualized during the TEE examination.

Findings:

Cardiac CT imaging successfully identified the left atrial appendage.
The CT provided anatomical detail explaining the TEE visualization failure.

Implications:

Multimodality imaging is crucial for comprehensive cardiac assessment in patients with complex congenital heart disease.
This case highlights potential limitations of single imaging modalities in intricate cardiac anatomies.