OBSTETRIC TECHNOLOGY
This section explains some common obstetrical tests and procedures .
Ultrasound
An ultrasound is a medical procedure in which highfrequency , low-power sound waves are reflected ( echoed ) back when they strike the uterus , placenta , the mother ’ s internal organs , or the baby . These echoes are converted to an electronic signal that is processed for display on a video screen . The resulting image allows you and your physician to see your baby and his or her internal organs .
Ultrasounds are performed for a variety of reasons . The information most commonly sought during an ultrasound evaluation is noted below :
• The number of babies you ’ re carrying
• Possible abnormalities . While most fetal abnormalities can be detected , it is NOT possible to detect all structural abnormalities of the fetus .
• Nuchal translucency measurement . This test measures the fat pad on the back of the baby ’ s neck between 10 and 13 weeks . An enlarged pad may be a very early sign of Down syndrome .
• Fetal heart activity
• The position of the baby in the uterus
• The fetal age , by measuring the head , abdomen , and extremities
• The amount of amniotic fluid around the baby
• Location of the placenta
Your abdomen will be covered with a lubricant gel . The ultrasound transducer will be moved over your abdomen to check the baby . In early pregnancy , additional information may be obtained by using a vaginal transducer , which is a small probe that is placed inside the vagina .
Ultrasound , unlike X-rays , is not harmful to the embryo , baby , or the mother . All patients will have a least two ultrasounds : one for dating the fetus and one to see the anatomy .
The cost of an ultrasound is usually covered by insurance . However , some insurance companies may refuse to pay for an ultrasound unless it is medically necessary . Insurance companies will not pay for an ultrasound done for the purpose of determining the sex of the baby . uabmedicine . org 33