Compliance Flashcards
1
Q
What is the equation for compliance?
A
C = Delta V/ Delta P
2
Q
What is the definition of elastance?
A
reciprocal of compliance
3
Q
What are 3 obstructive diseases?
A
bronchitis
asthma
emphysema
4
Q
What is a restrictive lung disease?
A
fibrosis
5
Q
What are the typical values for the intrapleural pressure (PIp) at the end of expiration and end of inspiration?
A
end of expiration = 5 cm H20
end of inspiration = 30 cm of H20
6
Q
What is compliance?
A
Measure of how easily an applied pressure induces a volume change
7
Q
What are the characteristics of a compliance curve?
A
Non-linear
Represents quiet breathing
8
Q
What are the 3 causes of reduced chest wall compliance?
A
Old age
Obesity
Scar Tissue
9
Q
What happens to tidal volume with reduced chest wall compliance?
A
decreased tidal volume
