Total System Compliance and Pneumothorax (PK2) Flashcards
1
Q
Total system compliance equation
A
1/TSC = 1/Cl + 1/Cw
2
Q
What is the relationship between total system compliance and FRC?
A
Zero distending pressure equilibrium position of TSC = FRC
3
Q
When does pneumothorax occur?
A
- When the lung perforates
- If there is a penetrating wound in the chest wall
4
Q
What happens in a pneumothorax?
A
Air enters and fills the pleural space from the lung or atmosphere
5
Q
What happens to the position of the lungs and thoracic cage in a pneumothorax?
A
- Lungs collapse
- Thoracic cage expands
6
Q
Types of pneumothorax
A
- Primary spontaneous pneumothorax
- Secondary pneumothorax
- Traumatic pneumothorax
- Tension pneumothorax
7
Q
Which type of pneumothorax is associated with respiratory disease (COPD, asthma)?
A
Secondary pneumothorax
8
Q
What causes traumatic or tension pneumothorax?
A
- Blunt or penetrating chest trauma
- Mechanical ventilation
