2020
Live birth after a freeze-only strategy versus fresh embryo transfer in three randomized trials considering progesterone concentration
Yu Y, Zhao S, Li Y, Niu Y, Wei D, Zhang S, Chen ZJ, Zhang H, Legro RS. Live birth after a freeze-only strategy versus fresh embryo transfer in three randomized trials considering progesterone concentration. Reproductive BioMedicine Online 2020, 41: 395-401. PMID: 32600942, DOI: 10.1016/j.rbmo.2020.04.021.Peer-Reviewed Original ResearchConceptsLive birth rateFresh embryo transferProgesterone concentrationsEmbryo transferOvulatory womenRandomized trialsBirth rateHuman chorionic gonadotrophin (HCG) administrationFresh embryo transfer groupCleavage-stage embryo transferFreeze-only strategyHigh ovarian responseInitial embryo transferPolycystic ovary syndromeChorionic gonadotrophin administrationEmbryo transfer groupFrozen embryo transferSingle blastocyst transferBetween-group differencesClinical pregnancyGonadotrophin administrationHCG administrationOvarian responseOvary syndromePrimary outcome
2019
Frozen versus fresh single blastocyst transfer in ovulatory women: a multicentre, randomised controlled trial
Wei D, Liu J, Sun Y, Shi Y, Zhang B, Liu J, Tan J, Liang X, Cao Y, Wang Z, Qin Y, Zhao H, Zhou Y, Ren H, Hao G, Ling X, Zhao J, Zhang Y, Qi X, Zhang L, Deng X, Chen X, Zhu Y, Wang X, Tian L, Lv Q, Ma X, Zhang H, Legro R, Chen Z. Frozen versus fresh single blastocyst transfer in ovulatory women: a multicentre, randomised controlled trial. The Lancet 2019, 393: 1310-1318. PMID: 30827784, DOI: 10.1016/s0140-6736(18)32843-5.Peer-Reviewed Original ResearchConceptsFrozen single blastocyst transferFresh single blastocyst transferSingle blastocyst transferElective single embryo transferRisk of pre-eclampsiaFrozen blastocyst transferBlastocyst transferLivebirth rateSevere ovarian hyperstimulation syndromePre-eclampsiaOvulatory womenPregnancy rateEmbryo transferOvarian hyperstimulation syndromeAcademic fertility centreFrozen-thawed single blastocyst transferHigher risk of pre-eclampsiaIn vitro fertilisationIncreased risk of pre-eclampsiaFrozen embryo transferExtended embryo cultureSingle embryo transferFertility centreHyperstimulation syndromeLower pregnancy rate