Ultrasounds during pregnancy are done thrice: in the 12th week, 24th week and the 36th in the first , second and third trimesters respectively. A lot of people choose to skip the 3rd trimester but it is the most significant out of the three for the following reasons:
- monitor the fetus’ growth and position (breech, transverse, cephalic, or optimal)
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determine the baby’s sex
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confirm multiple pregnancies
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check for congenital abnormalities or birth defects
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examine the fetus for structural abnormalities or blood flow problems
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monitor the levels of amniotic fluid
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determine if the fetus is getting enough oxygen
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diagnose problems with the ovaries or uterus, such as pregnancy tumors
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measure the length of the cervix
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confirm an intrauterine death
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the umbilical cord was seen to be around your baby's neck in an earlier scan
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the amount of amniotic fluid is more or less than it should be