How does a dating scan work

    We at MUMS understand that the first few months of pregnancy can be quite an anxious time for many women with various concerns as to whether the pregnancy is developing normally or that it may result in a miscarriage or even an ectopic pregnancy. Work out your due date Make and save your birth plan Maternity and paternity benefits Print your to-do list When pregnancy goes wrong. Premature or ill babies Premature baby: mum's story Premature baby: dad's story. It is also important to help us to plan your care appropriately. How does a dating scan work [PUNIQRANDLINE-(au-dating-names.txt)

    By 6 to 7 weeks gestation the fetus is clearly seen on trans-vaginal ultrasound and the heart beat can be seen at this early stage 90 to beats per minute under 6 to 7 weeks, then to beats per minute as the baby matures. Ultrasounds performed during the first 12 weeks of pregnancy are generally within 3 - 5 days of accuracy.

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    The most accurate time is between 8 and 11 weeks gestation. This is because the fetus is growing so quickly that there is a big difference in size from week to week.

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    However, the accuracy of the ultrasound examination is always dependent on the skill of the sonographer and the quality of the equipment. The EDD from the early dating scan is used - if the last menstrual period is not known or is unreliable, or the dating scan differs from the last menstrual period dating by more than 5 days. Ultrasound examinations from 12 to 22 weeks are regarded as being within 10 days of accuracy or up to 10 days earlier or 10 days later than the woman's calculated due date.

    Ultrasounds performed after 22 weeks gestation cannot be used to estimate the how does a dating scan work date of the baby because the size no longer reflects the age very well.

    My First Trimester Screening

    Even average babies can differ by up to 2 to 3 "weeks of growth". These scans are only used to estimate the due date of your baby if this is all you have to go on. If you have more than one ultrasound during your pregnancy, giving you 'multiple dates', then the earliest ultrasound estimate should be used, because it will be more accurate.

    We will always try to scan trans-abdominally first but if we need to do an internal scan then this will not be harmful in any way to the baby and would be discussed prior to having the scan. Ultrasound scans are painless but the gel used within the examination can feel a little cold and you may feel a little discomfort when the ultrasound probe presses on your tummy how does a dating scan work you meet people in detroit a very full bladder.

    An ultrasound scan typcally takes approximately 10 minutes to complete and the images seen will determine whether a Trans-Vaginal ultrasound scan internal is needed. Your ultrasound scan will be carried out by one of our highly qualified professionals in a caring and comfortable environment. During your scan we will explain the findings to you and following your scan we will give you your images and detailed report. If we cannot see a heartbeat then this is either due to the pregnancy being too early this is the commonest reason or that the pregnancy is found to be not viable.

    From this measurement we can work out how many weeks and days preganant you are this early measurement is approximate for dating. At this stage often the baby can be seen making small movements usually past 8 weeks which are amazing to see.

    Dating scan

    MUMS is a private pregnancy and scanning clinic, you can self-refer and arrange an appointment at your convenience. Occasionally during the scan, a miscarriage might be diagnosed even though you might still 'feel pregnant'. This first routine scan is carried out for the following reasons: to confirm when the baby is due: the early scan helps us to work out the date when your baby is due. We might suggest a different date from that indicated by your last period.

    Early Pregnancy Scan (6 -14 weeks)

    This is because not all pregnancies are conceived exactly 14 days after the first day of the last period. If your pregnancy is the result of assisted conception, we would normally calculate the delivery date from the date of your treatment.

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