sleep apnea is classified according to respiratory muscle efforts. 1. central, 2. obsructive, and 3. mixed. describe each:
1. central- an absence of ventilation efforts causes air movement to be absent bc the brain malfuntions in its normal signal to breathe.
2. obstructive- pharyngeal obstruction causes air movement to be absent. chest and abdominal movements are present. *most common form
3. mixed- combination of central and obstructive in one apneic episode