The two main categories of sleep apnea include OSA (Obstructive Sleep Apnea) or CSA (Central Sleep Apnea). Here, learn more about the two sleep apnea types, pathogenesis, and diagnostic testing. More than 18 million American adults have one of the two sleep apnea types – obstructive sleep apnea or central sleep apnea – where breathing repeatedly stops and starts during sleep. It is thought to be associated with a drop in arterial oxyhemoglobin saturation and/or an … [Read more...]