BACKGROUND The risk of placenta previa may be increased in pregnancies conceived by assisted reproduction technology (ART). Whether the increased risk is due to factors related to the reproductive technology, or associated with maternal factors, is not known. METHODS In a nationwide population-based study, we included 845,384 pregnancies reported to the Medical Birth Registry of Norway betwee...

background: spontaneous occurrences of multifetal pregnancies always have been a medical problem. the risks of perinatal morbidity and mortality and maternal morbidity increase with enhancement of the number of fetuses. in our prospective experimental study, the outcome of twin pregnancy after assisted reproductive technologies (art) with and without multifetal pregnancy reduction (mfpr) is com...

background: improvement of assisted reproductive technique (art) results in higher pregnancy rates from positive beta hcg to take home baby statistics. despite developments in culture media allowing blastocyst stage transfer, some centers apply second, third and sometimes fourth day post injection for embryo transfer. this study aimed to compare their reproductive outcomes.   methods : this pro...

Background We sought to determine the association between factors that affected clinical pregnancy and live birth rates in patients who underwent in vitro fertilization (IVF) and received intracytoplasmic sperm injection (ICSI) and/or laser assisted hatching (LAH), or neither. MaterialsAndMethods In this retrospective cohort study, the records of women who underwent IVF with or without ICSI and...

Endometriosis is a physiological state in which endometrial tissue is present outside the uterine cavity. The prevalence rate is estimated to be between 10 to 15% in women in reproductive age and is often associated with infertility. Despite extensive studies, no mechanisms of the endometriosis-connected infertility have been found. Only two types of treatment are currently recommended-either s...

OBJECTIVE To examine the safety and effectiveness of assisted reproduction using sperm washing for HIV-1-serodiscordant couples wishing to procreate where the male partner is infected. DESIGN AND METHODS A retrospective multicentre study at eight centres adhering on the European network CREAThE and involving 1036 serodiscordant couples wishing to procreate. Sperm washing was used to obtain mo...