Monozygotic twinning in the IVF era: is it time to change existing concepts?

Bös-Mikich, Adriana

doi:10.1007/s10815-018-1364-5

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…However, dizygotic twin and triplet pregnancies can also be encountered post-eSET [ 3 ]. Both monozygotic and dizygotic pregnancies can occur in the setting of fresh embryo transfers, in natural or modified natural frozen embryo transfers (FET), and rarely in medicated FET cycles [ 4 , 5 ]. Such events challenge the twinning dogma proposed by Corner [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Multiple Gestation after Elective Single-Embryo Transfer: A State-of-the-Art Review of Literature and Suggested Mechanisms

Zhaffal,

Al Jafari,

Salame

2024

Journal of Pregnancy

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Background. Elective single-embryo transfers are being increasingly used to curb the increase in multiple gestation rates. However, it has been documented that single-embryo transfers could still result in twins and on rarer occasions in triplet pregnancies. Main Body. A literature review was done to highlight the possible mechanisms leading to embryonic splitting. In this review, the incidence of zygotic splitting was addressed and the notion of chorionicity was explained. Risk factors for zygotic splitting and suggested mechanisms for both twin and higher order pregnancies were suggested and discussed. Conclusion. The hypotheses that we have so far remain unproven due to the rarity of zygotic splitting as well as the ethicolegal considerations of human embryo research. The presence of such incidents necessitates extensive counselling of the couple.

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