Which pulmonary findings are characteristic of childhood obstructive sleep apnea (OSA)?

Updated: Feb 13, 2019
  • Author: Mary E Cataletto, MD; Chief Editor: Denise Serebrisky, MD  more...
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Obtain blood pressure measurements to assess for hypertension. Listen to the pulmonic valve closure component of S2. Unlike in adults, in healthy young children, the pulmonary valve closure sound in the left second interspace can be a little louder than the aortic closure sound heard over the right second interspace. Listen for an unusually loud snappy pulmonary closure sound, which may indicate pulmonary hypertension. Assess for evidence of heart failure.

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