This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2019, Subject name: Anaesthesia
Post op pulmonary complications are seen/expected in all except:- 
Select and explain. 
A. BMI>30, B. Upper abdominal surgery, C. Patient with 7 pack years of smoking, D. Age >70
A: BMI>30
Answer: A: BMI>30 
Explanation: General anesthesia produces changes in respiratory system and can cause post op pulmonary complication. Risk factor: Thoracic surgery/Upper abdomen surgery Cigarette smoker Chronic respiratory disease Emergency surgery Anesthesia time duration if more than 180 minutes Age >70 years/> 65 years Renal failure patient Poor nutritional status Significant Blood loss or blood transfusion