View clinical trials related to Early Pregnancy.
Filter by:To evaluate the detection of hCG in the early pregnancy urine samples by Human chorionic gonadotropin (HCG) test system.
This clinical trial consisted of lay user study and method comparison study. Method comparison study: evaluate the clinical performance by comparing the results of new device and FDA cleared device (the comparator) tested on the same sample by professionals. Lay user study: evaluate the usability of by comparing the results of new device on the same sample tested by professionals and lay user, and by lay users complete the questionnaire.
Maternal age is an important factor affecting the pregnancy process and its results. Adverse obstetric outcomes such as preterm birth, stillbirth, and infant mortality are more common in women older than 35 years and younger than 20 years compared to women aged 20-29. Adolescent pregnancies have been associated with an increased risk of adverse pregnancy outcomes such as preterm birth, low birth weight, perinatal death, and maternal mortality. Advanced maternal age pregnancies were associated with higher rates of maternal hypertension and diabetes, and progressively worsening perinatal outcomes such as stillbirth, preterm birth, and low birth weight. Although the investigators' region has high birth rates, as far as they have observed, the rates of early and advanced maternal age are also quite high. the investigators' aim in this study is to determine the absolute effects of early and advanced maternal age on pregnancy and to investigate the pregnancy outcomes of these mothers.
Kisspeptins are a family of neuropeptides that are critical for the puberty initiation and female fertility. The investigators aimed to investigate in this study kisspeptin levels in early pregnancy, ectopic pregnancy, and early pregnancy loss.
Although one fourth of pregnant women experience at least 1 abortion, yet only 50% of causes are identified. Pregnancy loss can result from viral, bacterial, and other infections. It can reach the fetoplacental units through blood born or local spread. Lower genital tract infections- a potentially preventable infections- was suggested as a cause of spontaneous miscarriage. It was reported in 15 and 66% of early and late miscarriages respectively. These infections are also commonly encountered among apparently healthy looking pregnant women with an overall prevalence of 40-54%. If left untreated it can lead to premature rupture of the membranes, preterm birth, low birth weight, Fetal loss, neonatal ophthalmic and pulmonary damage.
Impaired vitamin B12 (B12) status during pregnancy is associated with increased risk of birth defects and common complications (e.g. intrauterine growth restriction, neural tube defects), and possibly immune function impairment. The newborns and infants of B12-deficient mothers have low B12 stores at birth, further exacerbated by a very low concentration of B12 in breast milk that may hinder their growth and development. In regions such as Bangladesh, many women of reproductive age have inadequate B12 status, probably due to low intake of animal source food. Vitamin B12 intake and status in pregnancy and lactation is potentially insufficient to prevent impaired child development and immune function related to inadequate B12 status. The investigators hypothesize that prolonged vitamin B12 supplementation through fortified milk starting from early pregnancy up to 6 mo-postpartum will improve: (1) biomarkers of vitamin B12 status in mothers-infant pairs (2) vaccine specific adaptive immunity in infants; (3) neurological and cognitive function in infants.
In this study physiological data is measured using wearable sensors as well as hormonal and ultrasound measurements of growing follicles/ ovulation in a group of endocrinologically healthy women with regular cycles, who aim for a spontaneous pregnancy. These women were recruited to generate reliable data on changes of the measured physiological parameters in a healthy menstrual cycle, as well as to evaluate physiological changes associated with early pregnancy. All pregnancies beginning during the study period are to be monitored to their natural end, in order to evaluate how the same nine physiological parameters are changing during pregnancy, how strong the variations of the parameters during pregnancy are, and whether they could be associated with early onsets of pregnancy complications such as premature birth or pre-eclampsia. This will be highly valuable to develop study protocols for the specific evaluation of the screening potential of pregnancy complications.
This study aims to investigate average gestational week in which mothers feel the babies'movements for the first time and maternal-fetal factors affecting this time.
This study will explore the influence of social and environmental factors, such as stress, nutrition, health status, etc., on women's reproductive function. Married Mayan women 16-42 years of age who live in the rural highlands of Guatemala and who have given birth to at least one child are eligible to participate in this study. Participants are interviewed about their demographic, social, family, personal, health, reproductive and economic situations. They have saliva and urine samples collected three times a week for up to 1 year. Their nutritional and health status is assessed monthly.