Can I Have a B-ultrasound After Eating?

Whether B-ultrasound can be performed after eating depends on the examination site. Generally, abdominal B-ultrasound requires fasting, while examination of the breasts, thyroid, heart, and other areas can be performed after eating.

Whether to eat before B-ultrasound depends on the site to be examined. If it is an abdominal examination, B-ultrasound cannot be performed after eating, and fasting is required for 8 hours before the examination. This is because organs such as the liver, gallbladder, and pancreas may undergo changes due to eating, which can affect the accuracy of the examination results. Some organs may even undergo positional changes, such as the spleen moving backward and upward after a full meal, affecting visualization. Therefore, it is best to be fasting. For B-ultrasound examinations of other areas, such as the breasts, thyroid, heart, etc., they are generally not affected by diet and can be performed after eating. In general, according to the different examination sites and projects, it is necessary to follow the doctor's advice and requirements. If there are any doubts, please consult the doctor before the examination.

1. Wear loose clothing. When checking the heart, you should rest for a while, take off your shoes, lie flat on the examination bed, undo the buttons of your upper clothes, expose your chest, and let the doctor examine it.

2. Fasting may be required. When examining deep organs that are susceptible to interference from digestive tract gases, fasting examination or strict intestinal preparation is needed. For example, it is best to avoid milk, soy products, sugars, and other easily fermented and gas-producing foods for 3 days before the examination of the liver, gallbladder, and pancreas in the abdominal cavity. Have a light diet the night before the examination and fasting on the day of the examination.

3. Timing of B-ultrasound examination. If the patient needs to undergo gastrointestinal or biliary X-ray radiography at the same time, the ultrasound examination should be performed before the X-ray radiography or after 3 days of the above radiography.

4. Holding urine. When examining organs such as the uterus and its accessories, bladder, prostate, etc. in the pelvic cavity, it is necessary to retain urine in the bladder before the examination. You can drink about 1000 milliliters of boiled water 4 hours before the examination and do not urinate 2-3 hours before the examination.