Fetus Transabdominal View vs. Transvaginal View
Transabdominal View
During the early 1st trimester of pregnancy, most OB ultrasounds are best performed with a full bladder to clearly visualize both uterus and fetus. However, a full bladder is not necessary during the 2nd and 3rd trimester because over the duration of the pregnancy, the fetus will show growth and development that can be well seen clearly through ultrasound without a full bladder.
Transvaginal View
There is a different approach for viewing the fetus and gestational sac during the 1st trimester of pregnancy. Transvaginal ultrasound is an invasive procedure, where the transducer (wand) is inserted into the vagina to get a close up view of the uterus, fetus and cervix of the female pelvis. This is a painless procedure that requires an empty bladder during examination. Transvaginal ultrasound is not necessary during the 2nd or 3rd trimester of pregnancy.
What are Obstetric Ultrasound Scans?
An Obstetric Ultrasound is the same as a baby sonogram or baby ultrasound. Measurements of the Crown-rump length, Biparietal diameter, Femur length, Abdominal Circumference and more are made during this scan.
Why is an Obstetrics Ultrasound Important?
An ultrasound is the primary tool a lot of physicians rely on for overall evaluation of the baby fetus. During each trimester, an ultrasound is performed to evaluate the condition of the fetus and to ensure proper growth and development.