CEFR C1

atrial appendage

noun phrase

Meaning

A small, ear-shaped pouch that projects from the upper chambers (atria) of the heart, often a site where blood clots can form.

Examples

  • The surgeon carefully examined the patient's left atrial appendage for any signs of thrombus.
  • An enlarged atrial appendage can increase the risk of stroke in individuals with atrial fibrillation.

Synonyms: auricle, ear