RESUMEN
In order to reduce the number of multiple pregnancies following IVF, the Belgian government agreed to reimburse laboratory expenses for six IVF cycles up to the age of 42 years, in exchange for restriction of the number of embryos replaced. Data on assisted reproduction outcome before and after the introduction of this new legislation were analysed retrospectively in terms of implantation, pregnancy and multiple pregnancy rates. After the introduction of the new law, the percentage of single embryo transfer increased from 14 to 49%. Implantation rates were 25.9 and 23% respectively. There was no difference in the overall pregnancy rate before and after the introduction (36 versus 37%). Twin pregnancies, however, decreased from 19 to 3%. These findings indicate that elective single embryo transfer significantly decreases the twin pregnancy rate without a reduction in the overall pregnancy rate.
Asunto(s)
Transferencia de Embrión , Fertilización In Vitro , Técnicas Reproductivas Asistidas/legislación & jurisprudencia , Bélgica , Implantación del Embrión , Femenino , Humanos , Embarazo , Índice de Embarazo , Embarazo Múltiple/estadística & datos numéricos , Estudios Retrospectivos , Resultado del Tratamiento , GemelosRESUMEN
Although the wish for a child may be ambivalent in women with anorexia or bulimia nervosa, the prevalence of eating disorders in fertility clinics is probably underestimated. Motivated by the wish for a child, these couples may be reluctant to reveal a history of an eating disorder and/or show resistance to some therapy for this disorder. Nevertheless, in our opinion, the eating disorder must be in full remission before any fertility treatment can start, if treatment is still necessary at that moment. Illustrated with some case examples, we will discuss the major problems and clinical strategies in the management of these complex cases, based upon the experience in our own fertility clinic.