ARDS is due to a defect in:: (A) Type I pnemocytes, (B) Type2 pnemocytes, (C) Clara cells, (D) Endothelial cells
Answer is D. ARDS is intiated by injury of pnemocytes and pulmonary endothelium setting in motion a viscious cycle of increasing inflammation and pulmonary damage.(ref Robbins 9th/672)