This is an automatically translated article.
The article is professionally consulted by Master, Doctor Lam Thi Kim Chi - Radiographer - Department of Diagnostic Imaging - Vinmec Danang International General Hospital.General abdominal ultrasound is one of the routine examinations, using ultrasound waves to build and reconstruct images of internal body structures. Abdominal ultrasound can assess damage to organs such as liver, bile, urinary system, reproductive system, spleen, and pancreas. So, do you have to fast before the abdominal ultrasound?
1. Does abdominal ultrasound require fasting?
In emergency cases, the patient does not need to fast or fast.With the prepared case, before the abdominal ultrasound, the patient should fast for at least 6-8 hours. It is advisable to have an ultrasound in the morning because overnight sleep will help the previous meal to be fully digested. Especially in patients with suspected or history of gallbladder disease, fasting helps to make ultrasound results more accurate. Undigested food can interfere with sound waves, making it difficult for doctors to get clear images.
There are many factors affecting the quality of ultrasound such as: obesity, food in the stomach and air in the intestinal tract. Therefore, in order for the abdominal ultrasound process to obtain accurate results, the patient should only eat light meals, eat easy-to-digest foods, and limit eating foods that are difficult to digest, greasy and easy to cause bloating. .
For example, during an ultrasound of the gallbladder, liver, pancreas, or spleen, the patient may be asked not to eat fat the night before the test until after the procedure. However, the patient can drink water and any medication as directed.
Với trường hợp đã chuẩn bị sẵn, trước khi siêu âm ổ bụng, bệnh nhân nên nhịn ăn ít nhất 6 - 8 giờ
2. Abdominal ultrasound, is it necessary to hold urine?
About 30 - 60 minutes before the ultrasound, the patient should drink a lot of water and hold back straining urine. Withholding urination causes the bladder to stretch, which helps a lot in observing the intra-abdominal images. Especially when ultrasound of the uterus, prostate, pelvic organs and lower abdomen... Do not try to drink too much water at once, causing the stomach to dilate, affecting the ultrasound results.3. Notes when performing abdominal ultrasound
When performing an abdominal ultrasound, the patient should wear comfortable clothing so that it can be performed easily. The patient will lie on the examination bed, pull the shirt up to the chest and pull the pants low to the pubic bone. Therefore, women going for abdominal ultrasound should not wear skirts. Don't be afraid to take off your clothes or perform an ultrasound as these are common medical procedures. The doctor will apply the gel on the abdomen, spread it evenly and place the ultrasound transducer probe on the abdomen. The patient lies on his back, the procedure takes less than 20 minutes, and there are no pain or risks. The gel is transparent and easy to wipe off after the ultrasound is done. At the end of the ultrasound process, the patient will be asked to put on his clothes and wait for the ultrasound results according to the instructions of the medical staff. Abdominal ultrasound is completely harmless to the health of the patient. There were no cases where abdominal ultrasound could not be performed. In certain situations where the patient is unable to remain still during the ultrasound or the skin and soft tissue infection is present, the ultrasound should be limited. For transvaginal ultrasound (only performed in sexually active women): the patient must empty the bladder completely before the ultrasound. The doctor will use a transducer device to expose, emit high-frequency sound waves and record images of abdominal ultrasound results on the display screen. Ultrasound is not X-ray, does not use ionizing radiation, so it is quite safe for humans. Abdominal ultrasound may be used during routine physical examination because it is a safe, routine test. Regular health check-ups should be carried out every 3-6 months.
Đối với siêu âm đầu dò âm đạo bệnh nhân phải đi tiểu hết để bàng quang không còn nước tiểu trước khi siêu âm
MSc Doctor Lam Thi Kim Chi graduated with a Master's degree in Radiology - Hue University of Medicine and Pharmacy and has over 6 years of experience as a radiologist. Dr. Chi used to work at Da Nang Obstetrics and Gynecology Hospital before working as a radiologist at Vinmec Danang International General Hospital as it is today.
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