What is an OB ultrasound and what does it do?

It creates images of an embryo or fetus inside a woman's uterus, as well as the mother's uterus and ovaries.

A Doppler ultrasound may also be an important part of an obstetrical ultrasound exam.

Doppler ultrasound is a special technique that checks blood flow in blood vessels, like the main arteries and veins in the body. During an obstetrical ultrasound, the examiner may look at blood flow in the umbilical cord or, in some cases, measure blood flow in the fetus or placenta.

Obstetrical ultrasound is helpful for several reasons, including:

Checking if there is a living embryo or fetus.

Estimating how far along the pregnancy is.
Checking for birth defects in the baby.
Seeing where the baby is positioned.See where the placenta is positioned.
Find out if there are more than one baby.
Checking how much amniotic fluid surrounds the baby.
Checking if the cervix is opening or shortening.
Look at how the baby is growing.
Evaluate the baby's overall condition.

The doctor or technician may use a transvaginal ultrasound to take a closer look at an early pregnancy.

A thin, lubricated probe is gently inserted into your vagina. For a transvaginal ultrasound, only the tip of the probe goes in.

Why get an obstetric ultrasound?

Obstetric ultrasounds are usually done every three to four weeks to monitor the fetus and uterus throughout pregnancy.

First-trimester obstetric ultrasound:

To confirm a viable pregnancy, the first ultrasound scan is performed. You can perform the procedure in two ways: either through the abdomen, where the transducer is placed on the skin, or through the vagina, where a more miniature transducer is inserted. At times, both may be performed together. It is best carried out before 13-14 weeks of pregnancy. A first-trimester ultrasound examination can aid in the diagnosis of a miscarriage early on and the existence of multifetal gestations (multiple fetuses such as twins or triplets). A first-trimester ultrasound also helps assess the mother's reproductive system for anatomical abnormalities and pathologies.

Second- and third-trimester obstetric ultrasound:

Second- and third-trimester ultrasounds help check the baby's growth and anatomy. They can also show the baby's position, the amount of amniotic fluid, where the placenta is, the baby's heartbeat, the spine, and any possible problems.

If fetal anomalies are identified between 18 and 20 weeks of gestation, pregnancy termination is still possible. Ultrasound scanning the fetus to move it helps in assessing fetal health, determining the delivery mode, and estimating the fetal weight and amniotic fluid. Fetal growth assessments are usually done every three to four weeks.

Who performs the test?

A trained or certified ultrasonographer performs the ultrasound.

How long does it take?

The exam usually takes about 30 minutes.

How to prepare for an obstetric ultrasound?

Preparing for a trans-abdominal or transvaginal ultrasound is usually simple. Some doctors may ask you to have a full bladder, especially if your ultrasound is after 18 weeks. If you are having a transvaginal ultrasound, you will be asked to empty your bladder just before the test. This helps reduce discomfort and makes it easier to see your pelvic organs. The ultrasound equipment is not disposable, so it is important to go to a clinic that follows good hygiene practices. The transducers are cleaned before and after each use to prevent infection. For trans-abdominal ultrasounds, disposable wipes are used to clean the transducer, which is then placed on your skin. For transvaginal ultrasounds, a disposable cover is used on the transducer. After the ultrasound, you can go home and return to your normal activities right away.

What happens during the Obstetric Ultrasound?

The technologist will explain the exam and may ask about your medical history. You will lie on your back or side on a padded table. Warm gel will be applied to your abdomen to help the sound waves. A small transducer will be moved over your abdomen, and a video monitor will show images of your organs and blood vessels.

You may need to change positions so more scans can be taken.

You should lie very still during the scan. You may be asked to take a deep breath and hold it for a few seconds. This helps the sonographer see your organs and structures more clearly.

If you need a transvaginal ultrasound, you will be asked to empty your bladder. You will then lie on your back with your feet in stirrups.

A thin, lubricated probe will be gently placed into your vagina. Only the tip of the probe goes in. You will need to stay very still during the procedure.

What to expect after the exam?

A radiologist will review your images, and your doctor will get a final report within 24 to 48 hours.

Why choose Tender Palm Super-Speciality Hospital for Obstetric Ultrasound in Lucknow, India?

Tender Palm Super-Speciality Hospital offers advanced Obstetric Ultrasound in Lucknow, India. Our experienced radiologists and obstetric specialists use advanced ultrasound technology to provide accurate and detailed pregnancy scans. We ensure timely evaluation, clear imaging, and reliable reports to support safe pregnancy monitoring and care. With trusted maternity services and affordable pricing, our OB Ultrasound cost is suitable for patients seeking high-quality pregnancy diagnostics in Lucknow, India.