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Test Findings

Left Atrial Enlargement

October 21st, 2019


  • Look For

  • Double density sign - a double cardiac border on the right side, due to the left atrium projecting behind the right atrium
  • Splaying of the carina with superior displacement of the left main bronchus
  • Slight bulging of the upper left cardiac border
  • Causes of Left Atrial Enlargement

  • Hypertensive heart disease
  • Valvular disease - mitral stenosis, aortic stenosis, mitral regurgitation
  • Hypertrophic (obstructive) cardiomyopathy
  • Aortic coarctation
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