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The presence of a "T-sign" at the inter-twin membrane-placental junction is indicative of monochorionic-diamniotic twins (that is, the junction between the inter-twin membrane and the external rim forms a right angle), whereas dichorionic twins present with a "lambda (λ) sign" (that is, the chorion forms a wedge-shaped protrusion into the ...
A multiple pregnancy (e.g., twins, triplets, etc.) is counted as 1. Parity, or "para", indicates the number of births (including live births and stillbirths) where pregnancies reached viable gestational age. A multiple pregnancy (e.g., twins, triplets, etc.) carried to viable gestational age is still counted as 1. [3]
A review of 128 cases by T.S.P. Tien found that the mean age of women with lithopedia was 55 years at the time of diagnosis, with the oldest being 100 years old. The lithopedion was carried for an average of 22 years, and in several cases, the women became pregnant a second time and gave birth to children without incident.
Signs and symptoms of pregnancy are common, benign conditions that result from the changes to the body that occur during pregnancy. Signs and symptoms of pregnancy typically change as pregnancy progresses, although several symptoms may be present throughout. Depending on severity, common symptoms in pregnancy can develop into complications ...
Additionally, entanglement may cause one twin to become stuck in the birth canal during labor and expulsion. [1] Cord entanglement happens to some degree in almost every monoamniotic pregnancy. [1] Cord compression: One twin may compress the other's umbilical cord, potentially stopping the flow of nutrients and blood and resulting in fetal ...
Transvaginal scans usually provide clearer pictures during early pregnancy and in obese women. Also used is Doppler sonography which detects the heartbeat of the fetus. Doppler sonography can be used to evaluate the pulsations in the fetal heart and bloods vessels for signs of abnormalities. [5]
During pregnancy, women of an average pre-pregnancy weight (BMI 18.5-24.9) should expect to gain between 25–35 pounds (11–16 kg) over the course of the pregnancy. [32] Increased rates of hypertension, diabetes, respiratory complications, and infections are prevalent in cases of maternal obesity and can have detrimental effects on pregnancy ...
There are three purposes of prenatal diagnosis: (1) to enable timely medical or surgical treatment of a condition before or after birth, (2) to give the parents the chance to abort a fetus with the diagnosed condition, and (3) to give parents the chance to prepare psychologically, socially, financially, and medically for a baby with a health problem or disability, or for the likelihood of a ...