THE MERCK MANUAL: The Merck Manual of Diagnosis and Therapymultimedia

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  • Cardiovascular Examination
  • Pulmonic Stenosis Murmur

    The murmur becomes audible only with inspiration (“in”) because inspiration decreases intrathoracic pressure, drawing more blood into the right ventricle and increasing right ventricular outflow.

    Recording provided by Jules Constant, MD.

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