Respiratory failure Flashcards
1
Q
What is type 1 respiratory failure?
A
- too little oxygen
2
Q
What is type 2 respiratory failure?
A
- too little oxygen
- too much carbon dioxide
3
Q
Define hypoxaemia?
A
- low levels of O2 in blood
4
Q
Define hypercarbia?
A
- high levels of CO2 in blood
5
Q
What causes respiratory acidosis?
A
- high levels of CO2
6
Q
Vaso_______ is used.to try match VQ when V is much lower than Q
A
- Vasoconstriction
7
Q
What are the chemoreceptors responsible for respiratory rate in a normal person?
A
- CO2 chemoreceptors
8
Q
What causes hypoxic drive?
A
- chronic hypercarbia
- loss of sensitivity to co2 chemoreceptors
- o2 chemoreceptors drive respiration
- too much o2 give –> reduction in response rate
9
Q
define shunting?
A
- perfusion without ventilation
10
Q
define dead space?
A
- ventilation without perfusion
