This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
Venous air embolism is most common in which position in surgery 
Select and explain. 
A. Sitting, B. Prone, C. Lateral, D. Lithotomy
A: Sitting
Answer: A: Sitting 
Explanation: Venous air embolism is a potential hazard whenever the operative site is above the level of patients hea The "sitting" position and its modification "beach chair" position are associated with a greater incidence of venous air embolism Ref : ncbi.nlm.nih.gov/pmc/aicles/PMC2580000