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Research shows that routine obstetric ultrasound before 24 weeks' gestational age can significantly reduce the risk of failing to recognize multiple gestations and can improve pregnancy dating to reduce the risk of labor induction for post-dates pregnancy. There is no difference, however, in perinatal death or poor outcomes for infants. [3]
Spalding's sign is a sign used in obstetrics. [1] It is named for Alfred Baker Spalding. [2] [3]It is an indicator of fetal death. [4] When fetal death has occurred loss of alignment and overriding of the bones of cranial vault occur due to shrinkage of cerebrum, [5] abdominal sonar examination may reveal an overriding of the fetal cranial bones. [6]
Cervical weakness. Cervical weakness, also called cervical incompetence or cervical insufficiency, is a medical condition of pregnancy in which the cervix begins to dilate (widen) and efface (thin) before the pregnancy has reached term. Definitions of cervical weakness vary, but one that is frequently used is the inability of the uterine cervix ...
The gestational sac is the large cavity of fluid surrounding the embryo. During early embryogenesis, it consists of the extraembryonic coelom, also called the chorionic cavity. The gestational sac is normally contained within the uterus. It is the only available structure that can be used to determine if an intrauterine pregnancy exists until ...
Uterine rupture is when the muscular wall of the uterus tears during pregnancy or childbirth. [ 3] Symptoms, while classically including increased pain, vaginal bleeding, or a change in contractions, are not always present. [ 1][ 2] Disability or death of the mother or baby may result. [ 1][ 3] Risk factors include vaginal birth after cesarean ...
Head hair becomes coarse and thicker. Birth is imminent and occurs around the 38th week after fertilization. The fetus is considered full-term between weeks 37 and 40 when it is sufficiently developed for life outside the uterus. [ 14][ 15] It may be 48 to 53 cm (19 to 21 in) in length when born.
Gestational age. In obstetrics, gestational age is a measure of the age of a pregnancy taken from the beginning of the woman's last menstrual period (LMP), [ 1] or the corresponding age of the gestation as estimated by a more accurate method, if available. Such methods include adding 14 days to a known duration since fertilization (as is ...
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