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Shifting Dullness

August 18th, 2017


  • How to Elicit

  • Percuss the patient's abdomen from the umbilicus to the left flank, noting where the percussion note changes from resonant to dull. Ask the patient to roll over to their left side and repeat percussion. 
  • Interpretation

  • If ascites is present the area of resonance will move at least 3cm medially.
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