This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'Severe pulmonary edema is seen when PCWP rises above? \nSelect and explain. \nA. 5 mm Hg, B. 10 mm Hg, C. 15 mm Hg, D. 25 mm Hg', 'role': 'user'}, {'content': 'Answer: D \nExplanation: 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 Pulmonary=fia and PCWP Interpretation 6-12 mm Hg (Normal) No Pulmonary Edema 12-18mm Hg(Mild 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', 'role': 'assistant'}]