P L5 - sleep apnea and REM and NREM sleep

Question 1

Restful (-______) and paradoxical (_______) sleep

Answer 1

Restful – NREM
Paradoxical – REM

Question 2

Is the risk of apnea greater in REM or NREM?

Answer 2

In REM

Question 3

Is the risk of apnea greater in REM or NREM?

Answer 3

In REM

Question 4

Features of NREM sleep:
* Breathing is ______ (________ variability)
* ___________ oxygen consumption
* _____ventilation (stage IV)
* Upper airway resistance _______ significantly
during sleep

Answer 4

• Regular, decreased
• Decreased
• Hypo
• increases

Question 5

What happens to phasic and tonic activity during NREM sleep?

Answer 5

Phasic inspiratory activity is preserved
However tonic activity is depressed (reduces constriction– relaxation – passive expiration)

• Phasic inspiratory activity in upper airway
  muscles is preserved, but tonic activity is
  depressed

Question 6

In CCHS - Which region of the brain controlling respiration is most likely to be damaged? WHy?

Answer 6

The RTN – regulates CO2 chemosensitivity
— These chemosensors dont fire properly thus leading to decreased breathing.
— Causes hypoventilation and central apnea during sleep