Is it too early for a major change? A critical objection to the freeze all policy

Excerpt

In vitro fertilization (IVF) has created an opportunity for numerous couples who would otherwise never have had a chance to get pregnant. Subsequently, embryo cryopreservation and frozen embryo transfer (FET) was successfully introduced into all IVF programs from mid 1980s [1]. The rationale on which freezing the surplus embryos is based is essentially to avoid repeating all the stressful and expensive steps of an IVF procedure in case of implantation failure with the fresh embryo transfer. If the outcome of the fresh embryo transfer is a healthy delivery, then the frozen embryos are available for a future sibling conception. Another less common indication for embryo freezing is in case of impending severe ovarian hyperstimulation syndrome (OHSS) in which all embryos are frozen. Similar situations arise in case of fluid collection in endometrial cavity, endometrial bleeding or related infrequent problems. All these indications for freezing all or super-numerary embryos are consistent with the statements of Declaration of Helsinki [2]. …