This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diagnosis in Obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'During 1st stage of labor, FHR should be auscultated in low risk pregnancy after every: \nSelect and explain. \nA. 10 mins, B. 15 mins, C. 30 mins, D. 45 mins', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is c, i.e. 30 minutesAuscultation of fetal heart sounds is a very good way of intrapartum fetal monitoring. Fetal heart sounds should be auscultated as here. 1st stage2nd stageLow riskevery 30 minsevery 15 minsHigh riskevery 15 minsevery 5 mins', 'role': 'assistant'}]