This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Plasma expanders are used in \nSelect and explain. \nA. Endotoxic shock, B. Neurogenic shock, C. Vasovagal shock, D. Anaphylactic shock', 'role': 'user'}, {'content': "Answer: A \nExplanation: During endotoxic shock,the amount of blood that can be delivered to the tissues get reduced due to loss of RBC's and decrease in blood volume which causes a decrease in blood pressure. Therefore,plasma expanders are used for the maintanence of blood volume in the body.They act by increasing osmotic pressure. Ref : SRB's manual of surgery 6th edition", 'role': 'assistant'}]