This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
which position is best in patients suspecting air embolism 
Select and explain. 
A. Supine, B. Left Lateral, C. Trendelenberg, D. BC
D: BC
Answer: D: BC 
Explanation: For venous air embolism the Trendelenburg or left lateral positioning of a patient with an air-lock obstruction of the right ventricle may move the air bubble in the ventricle and allow blood flow under the bubble Ref Davidson edition23rd pg 622