If you think that you might have a problem with sleep apnea, then here are a few very important facts that you should read while you are on hold with your doctor making an appointment to have it checked out. 1. There are three forms of sleep apnea. The first is called central sleep apnea or CSA, the next obstructive sleep apnea or OSA, and the last is complex or mixed sleep apnea. This last form is a combination of the symptoms of central and obstructive sleep apnea. 2. Though you might not realize this, sleep apnea affects not only…