Doctor, do B ultrasound on an empty stomach, can you drink water Do an examination first

1.Ultrasound examination of the liver and gallbladder is required to not eat for 8 hours before the examination and not drink water for 6 hours in order to have an accurate examination.

Otherwise, there will be errors in the ultrasound examination, which will cause the doctor to make an incorrect judgment. 2.Ultrasound examination of the digestive system:

Detection of deep organs susceptible to gas disturbance in the digestive tract is required with fasting examination or rigorous bowel preparation. Patients should eat a light diet 1 night before the examination, and should fast and dehydrate on an empty stomach on the same day. 3.

** B ultrasound examination: It is stipulated that when doing ** examination, if the pelvic uterus and its appendages, bladder, and other organs are examined, bladder urine needs to be kept before the examination, and about 1000 ml of boiled water can be drunk 2 hours before the examination, and do not urinate 2-4 hours before the examination.

Hello, do B ultrasound need to be fasting.

This question needs to be done by you to do a B-ultrasound examination.

If you are doing a physical examination, for example, if you are doing a physical examination, such as the examination of the hepatobiliary pancreas, especially the gallbladder, then you need to prepare on an empty stomach. Because if you eat or what you eat, it will have a big impact on the effect of our examination. Of course, if you are performing, such as thyroid or lower limb veins, or some other solid organs, you do not need to fasting, so you need to see which one of the items you are examining, if the examination items are mentioned earlier, such as the liver, gallbladder, spleen and pancreas, you need to prepare for fasting.

Pregnant women generally do not need to have an empty stomach for B-ultrasound, and B-ultrasound diet will not affect the data. In addition, if it is a B-ultrasound examination in the first trimester, it is necessary to hold urine in advance and accumulate a certain amount of urine in the bladder to see clearly.

"Fasting" generally refers to not consuming calories, such as eating staple foods, meat, eggs, milk and other foods, without strictly restricting water intake. Therefore, on the day of the physical examination, you can drink a small glass of water (about 200 ml) after waking up to ensure the necessary water for the human body. However, sugary drinks should be limited, otherwise the results of blood glucose tests will be affected.

It is best not to drink water, which will affect the results of the examination.

Hello, in the pregnancy examination after pregnancy, some examinations need to be fasted and blood tests are done. Some follow-up tests do not require fasting. Preconception check-ups require fasting blood tests.

Requires fasting. In this case, it is not possible to drink water, pay attention to rest, pay attention to keeping warm, strengthen nutrition, go to public places less to prevent colds, and supplement an appropriate amount of calcium, iron and zinc and other trace elements after the medium term.

Generally speaking, you should not drink water during the fasting physical examination.

The requirement for fasting is to abstain from food and water for 10 to 12 hours, and avoid the effects that eating may have on the results of the physical examination.

If you feel very thirsty, you can also drink a small amount of water to ensure the normal water of the body**, but not too much, so as not to dilute the blood and affect the results of the physical examination. In addition, if there is a chronic disease that requires long-term**, you should ensure that you take the medicine normally, without interruption, and you can take it with a small amount of water.

There are a few other things to keep in mind during the physical examination:

1. Three days before the physical examination, you should not participate in the dinner, too sweet, too salty, too greasy food should be avoided, no alcohol, try to eat vegetarian. Fasting is generally required after 8 o'clock in the evening, and early bedtime is required.

2. On the day of the physical examination, do not eat breakfast, and take blood and abdominal ultrasound examination on an empty stomach. The medical examination center arranges breakfast for medical examination.

3. When performing **B ultrasound for women and B ultrasound for men, you need to hold urine.

4. Women need to urinate when they have a ** examination.

5. Women should not do ** examination and laboratory urine examination during menstruation; Pregnant women should not have x-rays.

6. After venous blood drawing, press the puncture point of the needle with a cotton ball for two minutes, and do not rub it to prevent the formation of hematoma.

7. When undergoing physical examination, you should be naturally relaxed, have a peaceful mind, and provide the doctor with real medical records and your own physical condition or feelings.

8. When the examination results indicate that there is an "abnormality", do not shy away from the disease, consult the doctor in time, and conduct a review or ** according to the doctor's advice.

9. Insist on completing the prescribed physical examination items to avoid missing the diagnosis.

As the name suggests, you can't eat anything, and it's best not to brush your teeth.

Can't drink water, can't go to the toilet.

You can't drink water, and it's best not to eat or drink.

In ultrasound examination, ultrasound waves are emitted to the human body, and ultrasound signals reflected from organs and tissues in the body are recorded, so as to make a diagnosis of the disease. Ultrasound has poor penetration of gas, and almost all of it is reflected back after being emitted, but ultrasound has good penetration of water.

A woman's uterus and appendages are located between the bladder and rectum and are surrounded by the large and small intestines. Before ultrasound, if a woman drinks a lot of water and her bladder is full of urine, the ultrasound will pass through the urine and display a clear image of the uterus and appendages on the fluorescent screen of the ultrasound machine, so that the results will be more accurate.

During ultrasound examination, if there is no urine in the woman's bladder, or there is too little urine, then there will be a lot of gas in front of the uterus and adnexa, so that the ultrasound cannot penetrate, and it will be reflected back, affecting the results of the examination. Therefore, it makes sense to drink more water before the ultrasound examination to fill the bladder, so that the results of the examination can be more accurate.

What should patients do to prepare for abdominal ultrasound?

1. Fasting and watering. The dinner of the day before the examination should be based on light and less residue food, and the night should be fasted after eating. On the morning of the examination, breakfast and water should be abstained to ensure that the examination is done on an empty stomach in the morning.

This is mainly to reduce the interference of gastrointestinal contents to the ultrasound beam and ensure that the gallbladder and biliary tract are filled with sufficient bile. Sometimes, even if people are fasting from eating or drinking, they still have a large amount of gas in the gastrointestinal tract. These patients should be taken orally to reduce swelling tablets 1-2 days before the examination, which has a certain effect on eliminating intestinal gas.

2 Two days before the "B-ultrasound", gastrointestinal barium swallow and cholangiography should be avoided. For patients who present for digestive disorders, sometimes doctors prescribe both a barium swallow fluoroscopy and a B-ultrasound examination, and it is best for the patient to have a B-ultrasound examination followed by a barium swallow imaging. Because if there is barium in the gastrointestinal tract, it not only affects the ultrasound imaging of the gallbladder and pancreas, but also is prone to misdiagnosis.

3 When doing urinary system ultrasound examination, especially ureteral and bladder ultrasound examination, you should drink 400-600 ml of warm water 1-2 hours before the examination, and wait for the bladder to be full before the examination. If the patient needs to receive a digestive and urological test at one time, it is best to check that the morning urine is not passed on the same day, so that the bladder can be full without drinking water.

Fasting is not required for ultrasound.

Chengdu Xinhua.

Hello! B-ultrasound, as a simple, practical and effective examination method, has been more and more widely used.

Ultrasound has a high resolution of tissue structures, while ultrasound waves are impermeable and almost total reflection at very contrasting interfaces such as solid-gas or liquid-gas. If after eating, some gas can be swallowed with food, so that intestinal gas increases, some foods such as soy products themselves are also easy to produce gas, in the abdominal ultrasound, the penetration of sound waves is limited, the image presentation is not clear, so when doing abdominal ultrasound, fasting is often required.