Is fasting required before a transvaginal ultrasound?
You will not need to fast. Are you sure it is just a transvaginal ultrasound? For a transvag, your bladder must be empty. For a transabdominal ultrasound (transducer or camera on the skin of your lower belly), you will need a very full bladder. Most facilities will not do a transvag without first doing a transabdominal scan. We always have a patient fill their bladder for a pelvic ultrasound or an early OB ultrasound. If we cannot see what we need to see (uterus and ovaries or fetus), we will have the patient empty her bladder and then do a transvag. scan. For ultrasound scans, the only time we need you to fast is when we are doing an abdominal study. This would be to evalutate the liver, gallbladder, kidneys, pancreas, spleen etc. Abdominal scans are not done transvaginally though! “Before undergoing a pelvic ultrasound, the patient may be asked to drink several glasses of water and to avoid urinating for about one hour prior to exam time. When the bladder is full, it forms a convenie
