Dating scan how much water to drink
This may be to visualise an area not seen adequately on a previous scan; to check the baby's growth; or to see where the placenta is located before delivery of the baby.
We will send a report of your scan to the person who referred you for your ultrasound.
The LMP is used because most women know when their last period was, but may not know when they actually conceived.
•check your baby's heartbeat •check whether the pregnancy is intrauterine (not ectopic) •confirm the identification of a single or multiple pregnancy •measure baby to confirm gestation and provide you with an estimated due date (EDD) •allow you to more accurately plan for additional tests such as Nuchal Translucency A full bladder is required for this scan.
But ultrasounds can also lift the lid on a few worries you might be having. The main reason for the ultrasound is to work out how many weeks pregnant you are, and to estimate your due date.
The length of your pregnancy is calculated from the first day of your last menstrual period (LMP), even though you don't actually conceive until 14 days after your LMP, and later than this if your cycle is longer than 28 days.
This does not necessarily mean that there is something wrong; many scan findings just need a 'second look' for reassurance.
The sonographer will inform you of any such uncertain findings and discuss what your options are.