How is cardiogenic pulmonary edema differentiated from acute respiratory distress syndrome (ARDS)?

Updated: Mar 27, 2020
  • Author: Eloise M Harman, MD; Chief Editor: Michael R Pinsky, MD, CM, Dr(HC), FCCP, FAPS, MCCM  more...
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To exclude cardiogenic pulmonary edema, it may be helpful to obtain a plasma B-type natriuretic peptide (BNP) value and echocardiogram. A BNP level of less than 100 pg/mL in a patient with bilateral infiltrates and hypoxemia favors the diagnosis of ARDS rather than cardiogenic pulmonary edema. The echocardiogram provides information about left ventricular ejection fraction, right ventricular function, wall motion, and valvular abnormalities. [18]

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