A nurse will closely watch your child during the test. A machine called an oximeter will monitor the heart rate and the percent of oxygen level in the blood. This is done with a small probe that fits on your child's finger or toe just like a Band-Aid. If there is a problem, the test will be stopped and your child will be cared for as needed.
Each child responds differently to sedation, and there is a risk with any of these medicines that the breathing can slow down even to the point of stopping.
If your child stops breathing, he / she will be helped to breathe until he / she wakes up enough to breathe normally. The care described below is needed less than 1 percent of the time.
Sometimes a child requires oxygen, usually with a small tube placed under the nose or a mask.
Sometimes a child is congested or coughing and the back of the throat or the nose will be cleaned by suction through a small mouth tube.
Sometimes a child's windpipe relaxes or they snore and a plastic piece called an airway is placed in the mouth to pull the tongue forward and open up the throat.
Very rarely a child will actually stop breathing. In this case, your child will be helped to breathe with a bag and mask or, rarely, with a tube into the airway.
Some children react in the opposite way to sedation. Instead of falling asleep easily, they begin to thrash and kick and cry. Most children do not do this, but you should be prepared for this in case your child responds this way.
If this happens, the test may be canceled and you will need to bring your child back another day for the test to be done with a different sedation medicine.
Most often when children respond this way, they are able to get to sleep. In this case, they often wake up the same way. The child may be held down to keep him / her from getting hurt and another medicine may be given to help the child fall back to sleep.
After falling back to sleep, the child will be allowed to wake up on his/her own when the sedation medicine has naturally worn off (usually 1-3 hours). After waking up again, most children are calm.