View clinical trials related to Spontaneous Abortion.
Filter by:The purpose of the study is to compare the effectiveness of combination treatment (mifepristone premedication plus single-dose misoprostol) to single-dose misoprostol (standard of care) for the management of early pregnancy failure.
The overarching goal of this trial is to determine if an intervention comprising folic acid and zinc dietary supplementation improves semen quality and indirectly fertility outcomes (i.e., live birth rate) among couples trying to conceive and seeking assisted reproduction. The following study objectives underlie successful attainment of the overarching research goal: 1. To estimate the effect of folic acid and zinc dietary supplementation on semen quality parameters, including but not limited to concentration, motility, morphology, and sperm DNA integrity, relative to the placebo group. 2. To estimate the effect of folic acid and zinc dietary supplementation on fertility treatment outcomes [fertilization, embryo quality, implantation/human Chorionic Gonadotropin (hCG) confirmed pregnancy, clinical pregnancy, live birth], relative to the placebo group. 3. To estimate the association between semen quality parameters, sperm DNA integrity and fertility treatment outcomes (fertilization, embryo quality, clinical pregnancy, live birth) and to identify the best combination of semen quality parameters for prediction of clinical pregnancy and live birth. 4. To estimate the effect of folic acid and zinc dietary supplementation on fertilization rates among couples undergoing assisted reproductive technology procedures, relative to the placebo group. 5. To estimate the effect of folic acid and zinc dietary supplementation on embryonic quality among couples undergoing assisted reproductive technology procedures, relative to the placebo group.
Background: - In some countries, such as South Africa, the pesticide DDT is an important chemical for control of malaria-carrying mosquitoes. However, there is little evidence about the effects that it might have on human health. - DDT has been associated with miscarriage and fetal loss in areas with high levels of exposure, but more research is needed to determine what levels of exposure are associated with loss of pregnancies. Objectives: - To examine the relationship between pre-pregnancy levels of DDT in the blood and the loss of clinically recognized pregnancies. - To conduct a pilot study to evaluate data collection procedures for future research. Eligibility: - Women between 20 and 30 years of age who are not currently pregnant and who reside in villages in the Vhembe District in the northeastern part of South Africa. Design: - Evaluation of eligibility: 1. Short physical examination, with questionnaire about medical history, current living conditions, and daily life. 2. Several blood samples will be taken for study and to test for anemia, elevated lead levels, malaria, syphilis, and human immunodeficiency virus (HIV). - Half of the women will come from villages that are currently being sprayed with DDT, and half will come from villages that are not being sprayed. - Evaluation before and during pregnancy for subjects who become pregnant: 1. Blood and urine test, including urine pregnancy test. 2. Questions about recent menstrual history and sexual activity. 3. Questions about medical history, including treatment for malaria. - Pregnancy follow-up study, including blood draws, will be conducted regardless of whether the pregnancy is carried to term. - Researchers will assess and adjust study parameters as needed.
The primary objective of the study is to help elucidate the effects of low-dose aspirin in combination with folic acid on the incidence of live births and spontaneous abortions among a group of women who become pregnant compared to a control group.