Gynaecology & Obstetrics General 1dda2777 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 High-Yield Explanation In IVF, LH surge from pituitary is blocked to allow scheduling of egg collection.