de Bruin JP

ImportanceTreatments for men seeking fertility care are limited. Antioxidant supplements have been widely studied as a new treatment option, but these studies have had conflicting results.ObjectiveTo assess whether treatment of men seeking …

Study questionWhat are the costs and effects of tubal patency testing by hysterosalpingo-foam sonography (HyFoSy) compared to hysterosalpingography (HSG) in infertile women during the fertility work-up?Summary answerDuring the fertility wor…

STUDY QUESTION: Does hysterosalpingo-foam sonography (HyFoSy) prior to hysterosalpingography (HSG) or HSG prior to HyFoSy affect visible tubal patency when compared HSG or HyFoSy alone? SUMMARY ANSWER: Undergoing either HyFoSy or HSG prior…

AbstractSex steroids are converted to bioactive metabolites and vice versa by endometrial steroid-metabolising enzymes. Studies indicate that alterations in this metabolism might affect endometrial receptivity. This pilot study determined w…

The endometrial microbiota composition may be associated with implantation success. However, a 'core' composition has not yet been defined. This exploratory study analysed the endometrial microbiota by 16S rRNA sequencing (V1-V2 region) of …

BackgroundThe inability to have children affects 10% to 15% of couples worldwide. A male factor is estimated to account for up to half of the infertility cases with between 25% to 87% of male subfertility considered to be due to the effect …

STUDY QUESTION: Does hysterosalpingo-foam sonography (HyFoSy) lead to similar pregnancy outcomes, compared with hysterosalpingography (HSG), as first-choice tubal patency test in infertile couples? SUMMARY ANSWER: HyFoSy and HSG produce si…

Study questionIs a single endometrial scratch prior to the second fresh IVF/ICSI treatment cost-effective compared to no scratch, when evaluated over a 12-month follow-up period?Summary answerThe incremental cost-effectiveness ratio (ICER) …

STUDY QUESTION: Is pregnancy success rate after a concise infertility work-up the same as pregnancy success rate after the traditional extensive infertility work-up? SUMMARY ANSWER: The ongoing pregnancy rate within a follow-up of 1 year af…

ObjectiveTo study pain in women undergoing oocyte retrieval with a reduced needle (20/17 gauge) compared to a standard needle (16 gauge).DesignSingle-center randomized controlled trial.SettingFertility clinic.PatientsWomen undergoing their …

Study questionDoes endometrial scratching in women with one failed IVF/ICSI treatment affect the chance of a live birth of the subsequent fresh IVF/ICSI cycle?Summary answerIn this study, 4.6% more live births were observed in the scratch g…

Study questionWhat are the patient-reported outcomes (PROs) and patient-reported experiences (PREs) in home-based monitoring compared to those in hospital-based monitoring of ovulation for scheduling frozen-thawed embryo transfer (FET)?Summ…

Study questionDo cumulative live birth rates (CLBRs) over multiple IVF/ICSI cycles confirm the low prognosis in women stratified according to the POSEIDON criteria?Summary answerThe CLBR of low-prognosis women is ~56% over 18 months of IVF/…

STUDY QUESTION: Does pain or volume of used contrast medium impact the effectiveness of oil-based contrast during hysterosalpingography (HSG)? SUMMARY ANSWER: In women who report moderate to severe pain during HSG, the use of oil-based cont…

BackgroundIn the Netherlands, couples with unexplained infertility and a good prognosis to conceive spontaneously (i.e. Hunault > 30%) are advised to perform timed intercourse for at least another 6 months. If couples fail to conceive withi…

BACKGROUND: Tubal pathology is a causative factor in 20% of subfertile couples. Traditionally, tubal testing during fertility work-up is performed by hysterosalpingography (HSG). Hysterosalpingo-foam sonography (HyFoSy) is a new technique t…

BackgroundSuccess rates of assisted reproductive techniques (ART) are approximately 30%, with the most important limiting factor being embryo implantation. Mechanical endometrial injury, also called 'scratching', has been proposed to positi…

Study questionAre live birth rates (LBRs) after artificial cycle frozen-thawed embryo transfer (AC-FET) non-inferior to LBRs after modified natural cycle frozen-thawed embryo transfer (mNC-FET)?Summary answerAC-FET is non-inferior to mNC-FE…

BackgroundIntra-uterine insemination (IUI), in vitro fertilisation (IVF) and intracytoplasmic sperm injection (ICSI) are frequently used fertility treatments for couples with male subfertility. The use of these treatments has been subject o…

ObjectivesTo compare the effectiveness of in vitro fertilisation with single embryo transfer or in vitro fertilisation in a modified natural cycle with that of intrauterine insemination with controlled ovarian hyperstimulation in terms of a…

ObjectivesChlamydia antibody test (CAT) has been proposed to predict tubal disease. A correlation between CA-125 and the extent of endometriosis has been found by others. In this study we explored whether a combination of the two tests adds…

BACKGROUND: Multiple pregnancies are high risk pregnancies with higher chances of maternal and neonatal mortality and morbidity. In the past decades the number of multiple pregnancies has increased. This trend is partly due to the fact that…

BACKGROUND: Although in vitro fertilization (IVF) was introduced more than 30 years ago, its exact role in the spectrum of fertility treatments has never been studied in an unselected population. The aim of this study was to visualize the c…