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Cervical Scan

What is a cervical scan?

The cervical scan is an ultrasound test that is used to check the length of your cervix during pregnancy. The cervix is the passage at the opening of your womb. It will change as the pregnancy progresses in order to keep your baby safe and then to prepare for the delivery. We can measure the cervix during a trans-vaginal ultrasound to ensure it is within the normal range. If it is too short, then you may be at risk of complications such as a premature delivery.

Why this scan?

  • Checks the length of the cervix
  • Assesses the risk of premature birth
  • Investigate symptoms such as loss of amniotic fluid

What you will receive

  • Results of the cervical length measurement
  • Full ultrasound report for your maternity notes
  • Scan pictures for your medical records

When Should You Have a Cervical Scan?

The cervical scan is usually recommended if you are at risk of a premature delivery or there is reason to believe your cervix might be weaker than normal. Your midwife or obstetrician may refer you to us for a cervical scan if you have previously given birth early or had any issues with your cervix. You may need a cervical length scan if you were diagnosed with cervical incompetence during a previous pregnancy or you’ve had cervical surgery in the part. Cervical scans can also be performed to investigate symptoms such as loss of amniotic fluid.

The results will tell us whether your cervix is within the normal range for this stage in your pregnancy. If it is, then is should reassure you that you are at no higher risk of complications or early delivery. If an issue is detected, then there are steps your antenatal care team can take to reduce the risks. You will need to discuss the results with your obstetrician or midwife.

What to Expect

  • Cervical scans are usually performed between 17 and 21 weeks, but they can be done at any time between 14 and 36 weeks. We often recommend having two scans a few weeks apart, so we can monitor any changes in the cervix.
  • We will need to perform a trans-vaginal ultrasound to get clear pictures of your cervix. A slim ultrasound probe will be inserted into your vagina, so you’ll need to remove the lower half of your clothing. You should also empty your bladder when you arrive at the clinic for your appointment.
  • The cervix should usually be more than 25mm long at 17-21 weeks. If we find that it is shorter than expected, then you may be at higher risk of a premature delivery. Your sonographer will be able to discuss the results with you and you should talk to your midwife or obstetrician too as you may need treatment to reduce the risk.

Arranging Your Cervical Scans

If you need to arrange a cervical length scan in Cheshire, it’s easy to book an appointment through our online system. The scan will be performed by one of our experienced sonographers, who will be ready to answer any questions during or after the appointment.

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Clinic Locations

Visit our clinic in Central London and Cheshire

THE BIRTH COMPANY - LONDON

137 Harley Street, London W1G 6BF
Nearest Underground Tube Stations

Baker Street
Regent’s Park
Great Portland Street

THE BIRTH COMPANY - CHESHIRE

Alderley Edge Medical Centre, Talbot Road, Alderley Edge, Cheshire, SK9 7HR
Nearest Overground Train Station

Alderley Edge