Dating scan how much water to drink
Pelvic ultrasound scans assess the uterus and ovaries in women.
We recommend that you finish drinking 750mls of water an hour prior to the exam.
An ultrasound scan sends sound waves through your womb (uterus). The echoes are then turned into an image on a screen that shows your baby’s position and movements.
Hard tissues, such as bone, reflect the most sound waves and so make the biggest echoes.
The first is known as the ‘dating scan’ because it helps to show how many weeks pregnant you are, it can also check your baby's development.
Additionally you may be offered a special ultrasound called a ‘nuchal translucency scan’ (NT) which in combination with a blood test is used to screen for Down’s syndrome.
If your doctor has requested a scan of these structures, you will be required to fast. Renal ultrasound scans assess the kidneys, bladder and prostate (in men).
If you have any other concerns or questions, feel free to contact us at our practices Abdomen: Fast for 8 hours prior to exam. Pelvis, Kidney, Bladder, Pregnancy: Patients must have a full bladder.It is offered when you are around 11 to 14 weeks pregnant.In some areas the dating scan and the NT scan will be carried out together.Qscan offers dating scans, Nuchal Translucency Screening Tests, Morphology and Third Trimester scans.
For full details on preperation requirements and scan information, please download the Patient Information Flyer PDF on this page.We recommend that you finish drinking 1 litre of water an hour prior to the exam.