[Laser assisted hatching: Rouen University Hospital outcomes].
OBJECTIVE
Despite technical progress in In Vitro Fertilisation (IVF) procedure, embryo implantation rate remains low. Assisted hatching has been proposed to facilitate natural embryo hatching and implantation.


METHODS
Our study has evaluated whether laser assisted hatching improves implantation, pregnancy and live birth rates in different cases. We studied retrospectively 143 IVF cycles concerning more than 38 years old women, 166 IVF cycles after two previous implantation failures and 180 frozen-thawed embryo transfers.


RESULTS
Population characteristics were comparable in hatched and control groups. Implantation, pregnancy and live birth rates in women more than 38 years old were comparable with or without assisted hatching. Concerning repeated implantation failures, even if implantation, pregnancy and live birth rates were higher in assisted hatching group (FIV or ICSI), the differences were not significant. After frozen-thawed embryo transfers, implantation rate was significantly better with assisted hatching (19.14% vs 8.84% [p=0.02]).


CONCLUSIONS
Assisted hatching improves embryo implantation rate after frozen-thawed embryo transfer.
EA 4308 spermatogenèse et qualité du gamète male, laboratoire de biologie de la reproduction, CECOS, CHU Charles-Nicolle, 1, rue de Germont, 76031 Rouen cedex, France.
J
J
Blessmann-Roset
N
N
Rives
B
B
Clavier
J-P
JP
Milazzo
S
S
Mazurier
N
N
Mousset-Siméon
B
B
Macé
D000328:Adult; D004624:Embryo Transfer / Q000379:methods; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D007231:Infant, Newborn; D050498:Live Birth; D010062:Ovulation Induction / Q000379:methods; D011247:Pregnancy; D027724:Reproductive Techniques, Assisted / Q000706:statistics & numerical data / Q000639:trends; D012189:Retrospective Studies; D017211:Treatment Failure; D016896:Treatment Outcome