Routine Obstetrical Ultrasound

Dr. Keith Lescale offers a routine obstetrical ultrasound (sonogram). An ultrasound uses sound waves to produce an image of the baby in the womb. A probe that emits sound waves is passed over the mother’s abdomen. These sound waves bounce off the baby at different speeds. Because the sound waves hitting bone return quicker than those hitting fluid, bones appear white and fluid appears black on the monitor.

Routine ultrasounds can be administered at different stages of pregnancy. In the first trimester viability and gestational age can be determined. A crown-rump measurement (length from the top of the baby’s head to the bottom of the tail-bone) is the best way to predict the due date of the baby.

An ultrasound in the second trimester usually between 18-22 weeks can be ordered to evaluate the number, placental position, and further evaluate the anatomy of the fetus. A routine ultrasound in the second trimester is offered to lower-risk patients. A high-risk patient would have a Level II Ultrasound.

An ultrasound in the third trimester is used to monitor the growth and positioning of the baby.

 

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