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
During 1st stage of labor, FHR should be auscultated in low risk pregnancy after every: 
Select and explain. 
A. 10 mins, B. 15 mins, C. 30 mins, D. 45 mins
C: 30 mins
Answer: C: 30 mins 
Explanation: 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