A real case: 35 years old, four years of unexplained infertility, AMH 2.9, normal FSH/LH, mild male factor — and a prior cycle with 19 oocytes, 4 mature, 79% immature, one euploid embryo, no pregnancy. The talk uses this anchor case to walk through random-start, DuoStim, triple-trigger logic and the protocol moves that turn a high-yield-low-quality cycle into something usable.
A 79% immaturity index almost always signals trigger or LH-support failure, not stimulation failure. Random-start protocols allow stimulation initiation at any cycle phase without compromising outcome, especially in oncofertility and time-pressed cycles. DuoStim doubles the oocyte yield per month and recovers cases where a single cycle did not produce a euploid embryo. Triple trigger (agonist + HCG + rLH) targets oocyte maturation in patients with prior maturation failure.
Review the maturation index before blaming the protocol — high yield with low maturity is a trigger story. Use random-start for time-sensitive cases and DuoStim when a single retrieval underperforms in older patients. Add rLH where prior maturity was low even at adequate FSH dose.
Random-start and DuoStim need careful patient counselling on workload and emotional load. Triple trigger increases complexity and cost; reserve for documented prior maturation failure. The luteinisation question with DuoStim — antagonists and progesterone monitoring — is still under debate.
A 35-year-old with normal AMH, normal FSH/LH and 4 years of unexplained infertility. Triple trigger, 19 oocytes retrieved — and 79% immaturity. The talk uses real cases to walk through random-start, DuoStim and the role of LH supplementation when standard stimulation hits a wall.
