Barium Swallow

Why it is needed?

A series of x-rays are taken to examine the flow of the contrast to see if there is backflow from the stomach to the oesophagus (gastroeorophgeal reflux). It also tells us if the there is a narrowing of the oesophagus (stricture), movement of the liquid, pouches, polyps and hiatus hernia.

What preparation do I need?

You will need to stop eating and drinking for about 4-6 hours before the swallowing test. You will be asked to drink barium which tastes chalky. You may be asked to hold your breath at certain times during the test.

How long does it take?

The test usually takes about 30 minutes.

Is there any risk?

Barium may cause constipation. The stools may be lighter in colour due to the presence of barium. Please drink adequate amount of fluid to help the bowel movement. You may also be given a laxative to help with this. It may also cause brief abdominal discomfort which should subside over time. There is also a risk of allergy reaction from the barium. In very rare case, it can cause aspiration (barium escape into the lung). Barium swallow/meal procedure involves radiation. The radiation dose for barium study is about 0.27 mSV. The average annual radiation dose from natural background sources is 3.0 mSv.