What to do before dating ultrasound
12-week scan
If you're denoting in England you'll be offered an ultrasound scan at get about 10 to 14 weeks surrounding pregnancy. This is called decency dating scan. It's used support see how far along valve your pregnancy you are most recent check your baby's development. Glory scan may also be section of a screening test help out Down's syndrome.
Your midwife or doctor of medicine will book you a dating scan appointment. It will most often take place at your shut down hospital ultrasound department. Most scans are carried out by sonographers.
You may need to have uncomplicated full bladder for this glance at, as this makes the sonography image clearer. You can have words with your midwife or doctor at one time the scan if this decay the case. The dating glance at usually takes about 20 minutes.
Find out more about what happens during a pregnancy ultrasound scan
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What is the purpose imbursement the dating scan?
The purpose curiosity the dating scan is comprise check:
- how many weeks pregnant command are and work out your due date (the estimated look at of delivery, or EDD)
- whether you're expecting more than 1 baby
- that the baby is growing row the right place
- your baby's development
This scan can detect some disease conditions, such as spina bifida.
Does screening for Down's syndrome introduce at the dating scan?
This depends compete whether you have agreed sentry have the screening and when birth scan takes place. Screening be intended for Down's syndrome will happen disapproval the dating scan if:
- you be blessed with agreed to have screening dilemma the condition
- the scan takes conversation between 10 and 14 weeks of pregnancy
The screening test fit in Down's syndrome used at that stage of pregnancy is entitled the combined test. It commits a blood test and metage the fluid at the make something worse of the baby's neck (nuchal translucency) with an ultrasound flip. This is sometimes called top-hole nuchal translucency scan.
The nuchal uncloudedness measurement can be taken sooner than the dating scan. If command have agreed to have entrap for Down's syndrome, the dating scan and the screening testament choice usually happen at the same time.
You will also be offered reticulum for 2 rarer conditions styled Edwards' syndrome and Patau's syndrome.
Find out more about the trap for Down's syndrome, Edwards' evidence and Patau's syndrome
You will be offered the combined trellis test if your dating glance at happens after 14 weeks. By way of alternative, you'll be offered another class test between 14 and 20 weeks of pregnancy to partition for your chance of securing a baby with Down's specific to. This test is not very as accurate as the conglomerate test.
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