How would you write the objective portion of a SOAP note describing the abdomen of a patient with ascites?

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How to Document Ascites on Physical Examination in a SOAP Note

The objective portion of a SOAP note for a patient with ascites should document abdominal distension, flank dullness with shifting dullness on percussion, and quantify the severity as Grade 1 (detectable only by imaging), Grade 2 (visible distension), or Grade 3 (massive/tense ascites). 1

Essential Physical Examination Findings to Document

Inspection

  • Abdominal contour: Document whether the abdomen is distended, full, or bulging
  • Severity grading 1:
    • Grade 1: Not visible on inspection (detected only by imaging)
    • Grade 2: Moderate ascites with visible abdominal distension
    • Grade 3: Massive or tense ascites with profound abdominal distension

Percussion

Flank dullness is the most sensitive finding and should always be documented 2:

  • Percuss from the midline laterally toward the flanks with the patient supine
  • Document the location where tympany transitions to dullness
  • Note if the tympany-dullness interface is higher than normally found on the lateral abdomen

Shifting dullness (83% sensitivity, 56% specificity) 2:

  • Document whether dullness shifts when the patient rolls from supine to lateral decubitus position
  • This is the most reliable bedside test for ascites

Fluid wave (less useful) 2, 1:

  • While this test is more specific, it is cumbersome and performs less well than shifting dullness
  • Generally not necessary to document if shifting dullness is present

Additional Critical Findings

Jugular venous distension 2:

  • Must document presence or absence to differentiate cardiac ascites from cirrhotic ascites
  • JVD present = suggests heart failure as cause
  • JVD absent = more consistent with cirrhosis

Stigmata of chronic liver disease (if present):

  • Spider angiomata, palmar erythema, jaundice, splenomegaly, caput medusae

Sample Documentation Format

Objective:

  • Abdomen: Distended with Grade 2 ascites. Flank dullness present bilaterally extending to the mid-axillary line. Positive shifting dullness on lateral positioning. No fluid wave tested. Bowel sounds present. No tenderness to palpation. No palpable masses or organomegaly appreciated through fluid.
  • Cardiovascular: No jugular venous distension at 45 degrees.

Important Clinical Caveats

In obese patients 2:

  • Physical examination for ascites is problematic and less reliable
  • Document that ultrasound confirmation may be needed
  • Note: Slowly enlarging abdomen over months to years suggests obesity rather than ascites

Minimum fluid required for detection 2, 1:

  • Approximately 1,500 mL must be present before flank dullness is detectable on physical examination
  • Ultrasound can detect as little as 100 mL

If no flank dullness is present 2:

  • The patient has less than 10% chance of having ascites
  • Document this negative finding clearly

What NOT to Document

Avoid documenting the "puddle sign" as it is cumbersome and performs poorly compared to shifting dullness 2.

References

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