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To consider the risk of intercourse without contraception during infertility treatment.
Leiden University Medical Center. PATIENT(S): An infertile couple underwent IVF for tubal pathology. INTERVENTION(S): Transfer of one embryo during a natural cycle. MAIN OUTCOME MEASURE(S): Human leukocyte antigen typing, histochemical analysis of the fetal membranes, neonatal and maternal clinical outcomes. RESULT(S): A dizygotic twin pregnancy was confirmed after birth by human leukocyte antigen typing of both fetuses and mother and by histochemical analysis of the dividing fetal membranes. This suggests a pregnancy of concurrent IVF and spontaneous conception. Pregnancy was complicated by preeclampsia and intrauterine growth retardation of both fetuses. CONCLUSION(S): We state that couples should abstain from intercourse without contraception during infertility treatment to prevent multiple gestation and its related complications for mother and fetuses.
Department of Obstetrics, Leiden University Medical Center, Leiden, The Netherlands.
This article was published in the following journal.
Name: Fertility and sterility
To determine whether the incidence of hypertensive disorders is different in monozygotic compared to dizygotic twin pregnancies.
Single embryo transfer (SET) has been recommended to avoid multiple births following assisted reproductive technology (ART) procedures. Many studies have shown that frozen embryo transfer may yield be...
The purpose of this study was to compare pregnancy outcomes of in vitro fertilization (IVF) singletons diagnosed with vanishing twin syndrome with control pregnancies originating as singleton pregnanc...
Catheter injection speed affects depth and placement of the embryo into the uterine cavity and is shown to be highly variable in, and between, subjects in a manually performed embryo transfer. In an e...
The optimal method to prepare endometrium before frozen embryo transfer (FET) is not yet established. We retrospectively studied 4496 FET and detailed pregnancy and miscarriage rates in three groups o...
The purpose of this study is to determine whether embryo transfer on day 3 versus day 5 shows a significant difference in implantation, clinical pregnancy, live birth, miscarriage and mult...
The present study is designed to test the hypothesis that acupuncture, before and after embryo transfer, significantly improves pregnancy rates, compared to embryo transfer with sham acupu...
During IVF treatment, acupuncture at the time of embryo transfer may improve the pregnancy rate. This study aims to compare IVF pregnancy between two groups of patients that received eithe...
The embryo transfer implies transportation from the incubator where they have been at 37 ° C, to the transfer catheter inside a laminar flow hood whose working surface is also maintained ...
The objective of the present randomized controlled study is to compare clinical effectiveness and safety of freezing all embryos followed by frozen-thawed embryo transfer (FET) compared to...
A condition occurring in the female offspring of dizygotic twins (TWIN, DIZYGOTIC) in a mixed-sex pregnancy, usually in CATTLE. Freemartinism can occur in other mammals. When placental fusion between the male and the female FETUSES permits the exchange of fetal cells and fetal hormones, TESTICULAR HORMONES from the male fetus can androgenize the female fetus producing a sterile XX/XY chimeric "female"(CHIMERISM).
The techniques used to select and/or place only one embryo from FERTILIZATION IN VITRO into the uterine cavity to establish a singleton pregnancy.
Passage of blood from one fetus to another via an arteriovenous communication or other shunt, in a monozygotic twin pregnancy. It results in anemia in one twin and polycythemia in the other. (Lee et al., Wintrobe's Clinical Hematology, 9th ed, p737-8)
Methods of detecting genetic etiology in human traits. The basic premise of twin studies is that monozygotic twins, being formed by the division of a single fertilized ovum, carry identical genes, while dizygotic twins, being formed by the fertilization of two ova by two different spermatozoa, are genetically no more similar than two siblings born after separate pregnancies. (Last, J.M., A Dictionary of Epidemiology, 2d ed)
Results of conception and ensuing pregnancy, including LIVE BIRTH; STILLBIRTH; SPONTANEOUS ABORTION; INDUCED ABORTION. The outcome may follow natural or artificial insemination or any of the various ASSISTED REPRODUCTIVE TECHNIQUES, such as EMBRYO TRANSFER or FERTILIZATION IN VITRO.
Obstetrics and gynaecology
Fertility Menopause Obstetrics & Gynaecology Osteoporosis Women's Health Obstetrics and gynaecology comprises the care of the pregnant woman, her unborn child and the management of diseases specific to women. Most consultant...
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