One of the problems of in vitro fertilization is that it can increase the risk of thrombotic problems after the birth of the child. A recent study (Human Reproduction 29; 611-617,2014) appears to confirm this, since the incidence of thrombosis was 27.9 per 10,000 pregnancies in the case of in vitro fertilization and 17.5 per 10,000 in the control group. The risk of suffering a thromboembolic event during pregnancy was also greater in multiple pregnancies compared with singleton pregnancies. This study shows that there are more post-partum thromboembolic events after in vitro fertilization.
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