BACKGROUND There is increasing use of cryopreservation in IVF. This study compared singletons born after cryopreservation with singletons born after fresh IVF cycles and singletons born to women in the general population. METHODS Data were collected for Swedish IVF treatments during the years 2002-2006. All singletons from single embryo transfer (SET) and double embryo transfer (DET) after cr...

STUDY QUESTION Are childhood measures of phenotype associated with peri-conception parental, IVF treatment and/or embryonic characteristics of IVF children? SUMMARY ANSWER Birthweight, childhood body mass index (BMI) and height of pre-pubertal IVF children were strongly associated with peri-conception factors, including follicular and embryonic characteristics. WHAT IS KNOWN ALREADY A growi...

this study was undertaken to compare the efficiency of fresh and frozen-thawed buck semen on in vitro fertilization (ivf) of goat oocytes. cumulus oocytes complexes (cocs) were collected by aspiration of 2-6 mm diameter follicles, which were obtained from slaughterhouse. upon grading, only normal quality cocs were maturated in tcm-199 for 48 hours. the percentage of cocs reached to the m-ii sta...

During the last few decades in vitro production of mammalian embryos and assisted reproductive technologies such as embryo transfer, cryopreservation, and cloning have been used to produce and propagate genetically superior livestock. However, efficiencies of these technologies remain low. For these technologies to become more commercially viable, the efficiencies must improve. Despite this imp...

BACKGROUND IVF treatments carry a high risk of twin pregnancy which confers a higher risk to the mother and child than singletons. Increased use of elective single embryo transfer (eSET) can reduce this twin rate. We aimed to utilize a previously published data set and statistical model based on routinely collected clinical data to predict the outcomes of policies that increase the proportion o...

BACKGROUND The two main complications associated with the use of assisted reproduction techniques, ovarian hyperstimulation syndrome and multiple pregnancies, could be eliminated by milder ovarian stimulation protocols and the increased use of a single embryo transfer (SET) policy. A retrospective, cohort study was performed in private infertility centre to evaluate the embryological and clinic...

effect of cervical mucus aspiration with insulin syringe on pregnancy rate in art cycles     a. aflatoonian md1*, m. asgharnia md 2, n.tabibnejad gp3     1- associated professor, dept. of gynecology, university of medical sciences and research and clinical center of infertility, yazd, iran   2- assistant professor, dept. of gynecology, guilan university of medical sciences, rasht, iran   3- gen...

Aim: This study was conducted to investigate placenta-associated plasma protein (PAPP-A) and free human chorionic gonadotropin (B-hCG) levels after blastocyst transfer versus cleavage-stage embryo transfer. 
 Materials method: A total of 449 women were included in this rerospective sudy. The consisted two groups: Group 1: pregnant conceived by intracytoplasmic sperm injection (ICSI) proced...

BACKGROUND As embryo selection is not allowed by law in Switzerland, we need a single early scoring system to identify zygotes with high implantation potential and to select zygotes for fresh transfer or cryopreservation. The underlying aim is to maximize the cumulated pregnancy rate while limiting the number of multiple pregnancies. METHODS In all, 613 fresh and 617 frozen-thawed zygotes wer...

Routinely, a bolus of 5.000-10.000 IU human chorionic gonadotropin (hCG) is used for the final follicular maturation and ovulation as a standard method. HCG has the same effect of luteinizing hormone (LH) with long half-life. It has the long lutheotrophic effect which increases the risk of ovarian hyper stimulation syndrome (OHSS). Recently, gonadotropin-releasing hormone agonist (GnRH-a) trigg...