Color Doppler duplex ultrasound of the portal venous system (portal vein, superior mesenteric vein, splenic vein)

Preparation:

• Do not eat any food for 6–8 hours before the examination.
• You may drink a small amount of still water (no more than 100–200 ml) if necessary.
• For 2–3 days before the examination, avoid foods that cause gas: beans, peas, cabbage, raw fruits, carbonated drinks, fatty dairy products, and black bread.
• If you tend to have bloating, it is recommended to take Espumisan or Simeticone (2 capsules, 3 times a day) on the day before the examination.
• Regular medication should not be discontinued, but you must inform the doctor about all medications you are taking.
• If your medication needs to be taken with food, please discuss this in advance with the ultrasound specialist.
• Avoid smoking, chewing gum, and sweet drinks before the procedure — they can stimulate bowel movements and make it more difficult to visualize the vessels.