A dating scan might be recommended to confirm your due date if you are unsure of your last menstrual period or your date of conception. It is usually offered to pregnant women from 10 weeks to 13 weeks gestation, but can be carried out any time from 6 weeks.


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If you have had bleeding during your pregnancy or you have had previous miscarriages , your doctor or midwife may recommend an early dating scan from 6 to 10 weeks gestation. If you choose to have a dating scan, it will most probably be your first scan. You will need to get a referral from your doctor or midwife for a dating scan.

Importance of first trimester scan for first time pregnancy

A dating scan is carried out by ultrasound. A sonographer, who is usually a radiographer or a midwife trained in ultrasound, will complete your scan. If the scan is after 10 weeks, ultrasound recordings are usually made through your abdomen. The sonographer will put gel on your abdomen and move a hand-held device called a transducer, back and forward over your skin. In some situations, such as when the scan is completed before 10 weeks of gestation or you are overweight, you may also need a vaginal scan. Your sonographer will let you know if this is needed. For an abdominal dating ultrasound, you will need to have a full bladder.

You may be asked to drink some water and not go to the toilet beforehand because a full bladder helps to push your womb up to give a better picture.

For a vaginal scan, you can have an empty bladder. This will provide a fairly accurate estimate of how many weeks pregnant you are.

Why would I have a dating scan?

But it is important to remember that only a few women go into labour on their due date, so it can be more helpful to think about the month in which you are expecting your baby, rather than the exact day. Information on pregnancy ultrasound scans including when they are taken, what it can be used for, dating scans, anomaly scans, plus links to trusted resources.


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This Dads Guide to Pregnancy article covers early pregnancy scans and screening, plus normal fetal development and early miscarriage for men, by men. In the second trimester of pregnancy, you may be offered to have an morphology scan anomaly scan. Learn about what it looks for and when it is performed.

Viability and First Trimester Ultrasound

A nuchal translucency scan is part of the ultrasound scan that may give an indication of chromosomal abnormality. Learn more about how and when it is performed. During your pregnancy, you will be offered a number of tests and scans. The aim is always to check on the health of you and your baby, but it can sometimes be overwhelming and confusing.

Handy infographic that shows what you can expect at each antenatal appointment during your pregnancy. In the meantime, we will continue to update and add content to Pregnancy, Birth and Baby to meet your information needs.

This information is for your general information and use only and is not intended to be used as medical advice and should not be used to diagnose, treat, cure or prevent any medical condition, nor should it be used for therapeutic purposes. The information is not a substitute for independent professional advice and should not be used as an alternative to professional health care. The list of scans to be done during pregnancy usually varies from person to person. A low-risk pregnancy may have four or five scans during the entire pregnancy.

Here is a list of the routine scans:.

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Right from the time you conceive your baby till the time of delivery, your growing baby goes through several stages of development from a fertilized egg to a garlic bulb size baby in the womb before he or she is born. The early scan can reveal some fantastic things about fetal development in the womb. This is the gestation sac. The expert can identify the location of the sac to determine whether it is in your uterus or not.

This is to make sure that there is no sign of an ectopic pregnancy. She may ask you to come back for another scan in one or two weeks. At this time, the head to bottom length of the embryo is measured to calculate your due date.

First Trimester Scans For Your Growing Baby | Being The Parent

It will grow rapidly in the coming weeks. In the next few weeks,the doctor may advise you for an early morphology scan NT scan.


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The doctor will then take note of your entire health history and perform a full physical and pelvic exam. Usually at this time, your doctor may perform an ultrasound scan to confirm the pregnancy. The ultrasound scan is one of the routine tests conducted during pregnancy which determines the normal development of your baby and detects any fetal abnormalities as well. This is also done to calculate the due date and determine the heartbeat of the baby.

It is delightful to see the little blob with a heartbeat that will soon become your baby! Interestingly, the ultrasound scan also helps your doctor to understand how many babies you are carrying and if there are twins, the scan will help to identify whether they are identical or not. Once you sail smoothly through the first trimester, it is time for you to enter the second trimester with your baby.

The material on this website is provided for educational purposes only and is not to be used for medical advice, diagnosis or treatment, or in place of therapy or medical care.