CSW2 obstructive sleep apnoea Flashcards
1
Q
What are the 2 ways OSA arises?
A
Collapse of upper airway
Reduced efferent activity from brainstem respiratory control neurones
2
Q
What causes upper airway collapse in OSA?
A
Decrease in muscle tone
3
Q
What is intrathoracic pressure in OSA?
A
negative intrathoracic pressure
4
Q
What is the definition of apnoea?
A
Cessation of breathing (which causes intermittent hypoxia)
