There are several reasons why individuals take the exams. Some do it to raise their chances of getting jobs in the field they want. Others do it because they are interested in the subject and want to become an RN. Yet others do it as a part of their NNAX training. If your reason is one of these, then you should learn about the respiratory system before taking your test.
First, understand how the lungs work. In order to breathe, the lungs must fill with air. Air is transported through the blood to the capillaries in the body. The air then travels through the tubes called bronchioles to reach the lungs where air is breathed in.
Air is continually passing through the lungs. In some individuals, the system does not function very well and does not transport enough air to get there. This is known as obstruction. If the system is functioning properly, air will enter the lungs and be breathed in.
Second, understand the meaning of the symbols on the exam chart. In the upper portion of the chart, you will see the letter “R” followed by numbers that correspond to different areas of the body. The leftmost numbers will represent the organ that the individual uses to take in air. The center line represents the nose. The rightmost number corresponds to the mouth and the deepest number represents the lungs.
When the test is administered, there are two tubes that are placed in the patient’s nostrils. A device called a cannula is inserted into the nose so the physician can pull it out. A light will then come on and the physician will find areas in the throat and bronchioles where the patient’s breath is free from obstruction. He or she will then place the cannula into one of those areas and pull it out after a few moments.
During the test, the EKG will read as follows: low (zero), medium (the bar moves up to the top but remains the same position when it is lowered again), and highs (the bar moves down but stays the same position when it is raised again). Your reaction time will differ depending on which zone you are in. You will not only know your results but also where you are in the range. For instance, if you are somewhere between the lows and the highs, you will be having difficulty in both directions.
Next comes the part of proper breathing. It is important for people to understand how proper breathing should take place. You can do this during a normal breathing pattern by simply taking in and exhaling breaths with your lips and nose. During the test, however, you will be instructed to hold your breath and to concentrate on how each breath is being held. Proper breathing will aid the person in correctly moving air through his or her lungs and into his or her cells.