What is an ultrasound of a foetus ?

An ultrasound of the foetus is a test done during pregnancy that employs sound waves to provide an image of the child inside the womb. Because it can give your doctor crucial knowledge about the growth and development of your unborn child, an ultrasound is a typical component of prenatal treatment in the United States. It can also assist your doctor in detecting any potential issues that your baby could be having. ‌ 

You'll recline on a table for the 2d ultrasound while having some gel placed on your abdomen. Sound waves will be sent into your womb by a tiny instrument called a transducer, which will be moved over your skin and pressed on your abdomen. After that, pictures are gathered and displayed on a screen.‌After the examination is over, the gel will be removed, and your doctor will go over the results with you. If you would like to take the ultrasound with you, you can order printed copies. If your doctor wants to learn more about the health of your baby, he or she may occasionally request extra tests.

Various Stages of Pregnancy and Ultrasound 

The first trimester: which lasts from the first day of your last period (often before you become pregnant) to 13 weeks, is when your first 2d ultrasound is performed. Your doctor will determine whether you are pregnant and how far along you are during the initial ultrasound. 

Second trimester: To assess your baby's growth and development, an ultrasound is performed in the second trimester (14 to 26 weeks). Also, you can learn your due date and whether you are expecting more than one child. 

Third trimester: A third trimester ultrasound may be recommended (27 to 40 weeks). Your doctor might want to know your baby's position, expected weight, and whether or not your baby is developing as predicted at this time.

When can ultrasound be used to determine a baby's gender? 

Around the conclusion of the first trimester and during the second trimester, an ultrasound can be used to identify the baby's gender. Inform your ultrasound specialist in advance if you want to learn the gender of your unborn child or if you prefer to leave it a surprise until the child is delivered. ‌The further along in your pregnancy you are, the more accurately you can predict the gender of your unborn child. At 11 weeks, the accuracy can range from 70.3% to 98.7% to 100%, and at 13 weeks of gender test, it can reach 100%. The earliest that sex may be determined using an ultrasound and a technique known as the "nub theory" is eleven weeks.

The nub theory 

A genital tubercle, often known as a "nub," is present between the legs of all newborns. From 11 to 13 weeks of gender test, the nub generally begins to form. If the nub points at an angle of more than 30 degrees against the spine, the baby is a boy, according to the nub theory. If the nub is perpendicular to the spine or if it is angled against the spine at a lesser than 10-degree angle, the baby is a female.In a controlled investigation, the nub theory was used to determine the gender of 93% of the 656 singleton (one baby) pregnancies.

Getting Ready for an Ultrasound 

You'll receive instructions from your doctor on how to get ready for your 2d ultrasound. Before the test, you could be instructed to drink up to six glasses of water to fill your bladder. This improves the vision of the baby on the ultrasound images for your doctor. You might be told to wait to urinate until the test is finished. ‌ 

When being scanned, you could be requested to change into a medical gown. Although the scanning is usually pleasant, let the technician know if you feel any discomfort. Typically, your 2d ultrasound takes 30 minutes to complete.