This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'A female presents with significant blood loss du&;>> postpaum haemorrhage (PPH). What would be the shock index (HR/systolic BP)? \nSelect and explain. \nA. .7-0.9, B. 0.5-0.7, C. 0.9-1.1, D. 0.1-0.5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Shock index = Hea rate/Systolic BP Normal = 0.5-0.7 If it becomes 0.9-1.1 it indicates massive blood loss and need for intensive resuscitation Ref: Fernando Arias 4e pg 391.', 'role': 'assistant'}]