Page "Acute respiratory distress syndrome" Paragraph 19

Any cardiogenic cause of pulmonary edema should be excluded.

This can be done by placing a pulmonary artery catheter for measuring the pulmonary artery wedge pressure.

However, this is not necessary and is now rarely done as abundant evidence has emerged demonstrating that the use of pulmonary artery catheters does not lead to improved patient outcomes in critical illness including ARDS.