<prompt> Severe pulmonary edema is seen when PCWP rises above?5 mm Hg10 mm Hg15 mm Hg25 mm Hg  <response>: Answer is D 25 mm Hg: Respiratory Care Anatomy and Physiology: Foundations for Clinical Practice Elsevier Health Sciences, 2013 126 Severe Pulmonary Edema is seen when PCWP rises above 25mm Hg. Hyrrostatit Pulmonaryfia and PCWP Interpretation 6-12 mm Hg Normal No Pulmonary Edema 12-18mm HgMild Increase May or may not be associated with Pulmonary Edema Early Interstitial pulmonary edema may be seen 18 - 25 mm Hg Moderate Increase Usually associated with Interstitial Pulmonary Edema 25 mm Hg Severe increase Usually associated with Alveolar Pulmonary Edema 