This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Gynaecology & Obstetrics
The following statements are related to symphysiotomy except: 
Select and explain. 
A. The operation is done only when obstruction is anticipated, B. Isolated outlet contraction is the ideal case, C. FHS must be present, D. Ventouse is preferable to forceps for extraction
A: The operation is done only when obstruction is anticipated
Answer: A: The operation is done only when obstruction is anticipated 
Explanation: Symphysiotomy is the operation designed to enlarge the pelvic capacity by dividing the symphisis pubis. It should be done only when the obstruction is ESTABLISHED and not anticipated. -isolated outlet contraction is ideal -FHS must be present -ventouse is preferable to forceps for extraction (DC Dutta TB of obstetrics 8th edtn pg 679)