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Obstetric ultrasonography, or prenatal ultrasound, is the use of medical ultrasonography in pregnancy, in which sound waves are used to create real-time visual images of the developing embryo or fetus in the uterus (womb). The procedure is a standard part of prenatal care in many countries, as it can provide a variety of information about the ...
[2] [48] Follow-up one week after the procedure is recommended to undergo ultrasound evaluation for fetal viability and assess healing of the puncture site. [48] Post-procedural pain and discomfort should be minimal and temporary and may be managed with acetaminophen. [2]
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 ...
Most people only need a couple of ultrasounds during pregnancy, but in certain situations, you may need more. Your preference, provider's standard protocol, ultrasound machine access, medical ...
With obstetric ultrasonography the gestational sac (intrauterine fluid collection) can be visualized at 4.5 to 5 weeks gestation, the yolk sac at 5 to 6 weeks gestation, and fetal pole at 5.5 to 6 weeks gestation. Ultrasound is used to diagnose multiple gestation, which cannot be diagnosed based on the presence of hCG in urine or blood. [15]
Fetal viability typically occurs at about 24 to 25 weeks of gestation. [2] When the fetus is in between the ages of 24–34 weeks, a glucocorticoid is given to the patient about 24 hours before the procedure to stimulate lung maturity. An ultrasound is performed before the procedure to view the position of the fetus and may be used during the ...
The procedure often takes two days; the first day is for testing, and the procedure happens on the second day. The fetuses are evaluated, first by ultrasound , then often by testing the amniotic fluid and chorionic villus sampling ; these tests help determine which fetuses are accessible for the procedure, and whether any fetuses are unhealthy.
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