Gynaecology & Obstetrics Pituitary down-regulation is done in IVF because of all except A To prevent ovarian hyperstimulation syndrome B To prevent endogeneous LH surges C To prevent premature ovulation D To cause oocyte maturation and ovulation π‘ Explanation Pituitary down-regulation is done in IVF because of all except β Correct Answer: D. To cause oocyte maturation and ovulation