preparation for ultrasound is minimal. generally if internal organs such as the gallbladder are to be examined patients are requested to avoid eating and drinking with the exception of water for six to eight hours prior to the examination. this is because food causes gallbladder contraction minimizing the size which would be visible during the ultrasound. in preparation for examination of the baby and womb during pregnancy it is recommended that mothers drink at least four to six glasses of water approximately one to two hours prior to the examination for the purpose of filling the bladder. the extra fluid in the bladder moves air-filled bowel loops away from the womb so that the baby and womb are more visible during the ultrasound test.
how do patients prepare for an ultrasound?