First of all, we have to ask our doctor in detail about the professional advice he/she gives before performing the lung function test, which means that we have to listen to the doctor well and follow his/her instructions. If you have been taking asthma medication, you may want to ask your doctor to determine how long you should stop taking it, generally three days. And some of the foods that can affect the accuracy of the test results, such as tea, coffee, cola, and other foods that have a bronchodilator effect, should not be eaten. If you have any questions about the use of these foods or medicines, you should ask your doctor as soon as possible to avoid delays.
In fact, the lung function test, which most people have done, is to blow into a machine, and that's what we often do in college to measure lung capacity. But this spirometry test we have is only one aspect of a pulmonary function test, and a complete pulmonary function test will be much more complicated than that. Before the test, first the doctor will demonstrate how to use this specialized medical equipment in front of you, and then that's when you'll have to learn by heart.
The first point is that there's a chance you won't be able to breathe through your nose, you'll probably have to breathe through your mouth. Because there's a chance that your nose could get caught in some kind of clamp by the doctor. And then the second thing you have to try to keep your mouth closed when you're doing the equipment test, otherwise it's going to leak and then you're potentially going to have to redo it. And then you have to read and understand the instructions that the doctor gives you about when to breathe in and when to breathe out.
But you don't want to be overly nervous when you're having the test, or it could affect one of your results, too. It's reasonable to say that if everything goes smoothly, it can be done in about a few minutes. And unlike other tests, such as gastroenteroscopy, which can be damaging to the body, it is not damaging to the body, and everything will go very smoothly, but in order to complete this pulmonary function test, there has to be a good cooperation between you and your doctor, and this aspect is definitely something that requires your cooperation.