Roel Schats

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BACKGROUND The current study was designed to compare antral follicle count (AFC) and basal ovarian volume (BOV), the exogenous FSH ovarian reserve test (EFORT) and the clomiphene citrate challenge test (CCCT), with respect to their ability to predict poor and hyper responders. METHODS One hundred and ten regularly menstruating patients, aged 18-39 years,(More)
Based on results from a survey study in a sample of Australian parents of twins, Raj and Morley (2007) reported that questions concerning the mode of conception of twins may be offensive to parents. We looked at the willingness to reply to questions about mode of conception of twin pregnancies in a large survey study that was completed by 20,150 mothers of(More)
OBJECTIVE To investigate the success rate of proximal tubal occlusion with Essure devices in subfertile women with hydrosalpinges, and to observe the results of subsequent treatment with IVF. DESIGN Prospective, single-arm, clinical study. SETTING University hospital and teaching hospital. PATIENT(S) Ten women with uni- or bilateral hydrosalpinges(More)
BACKGROUND An optimal range of LH concentrations for achieving pregnancy has not been established. The aim of this study was to investigate the effect of various LH levels induced by different GnRH antagonist doses on IVF outcome. METHODS This was a prospective, single centre study including 144 IVF patients, stimulated with recombinant FSH from cycle day(More)
Study question: Which reproductive endocrine changes are attributed exclusively to laparoscopic ovarian drilling in polycystic ovarian syndrome (PCOS)? Summary answer: Laser evaporation specific endocrine effects were the prevention of an immediate increase of Inhibin B and the sustained decrease of testosterone, androstenedione and anti-Müllarian hormone(More)
OBJECTIVE To validate previously computed correction factors for free β-human chorionic gonadotrophin (fβ-hCG) and pregnancy-associated plasma protein-A (PAPP-A) in in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) pregnancies with hormone treatment and to determine the effect on false-positive rate (FPR). METHODS Retrospective(More)
This study aimed to compare longitudinal serum concentrations of angiogenic implantation factors between ongoing singleton and twin pregnancies after double-embryo transfer and to investigate whether these are involved in sustained double implantation. Sixteen patients with an ongoing singleton and nine patients with an ongoing twin pregnancy after(More)
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