What is Sleep Apnea
There are three types of sleep apnea. (1) Obstructive sleep apnea is caused when the upper airway becomes blocked during sleep. This blockage greatly reduces or completely stops airflow, and is usually accompanied by loud snoring.
(2) Central sleep apnea is a type of sleep apnea that is caused when the brain does not send signals to the respiratory muscles needed to breathe during sleep. This type of sleep apnea is not accompanied by snoring.
Sometimes, a person can have both obstructive and central sleep apneas, which is called (3) complex sleep apnea syndrome.