1. OBSERVATION
CAUSE
Decreased dynamic compliance, stable static compliance, (↑ PIP, unchanged plateau)
Increased Raw
Increased dynamic compliance, stable static compliance (↓ PIP, unchanged plateau)
Improvement of Raw from baseline
False increase in dynamic compliance, with a true decrease in static compliance (↑ in PIP and plateau)
Worsening lung/thoracic compliance (difference between PIP and plateau remains the same)
A true decrease in both dynamic and static compliance (↑ PIP and plateau)
By ↓ in compliance and increase in Raw
A false increase in dynamic compliance, with true increase in static compliance (↓ PIP and plateau)
Seen with improvement of patient’s lung/thoracic compliance (difference between PIP and plateau remains the same)
A true increase in both dynamic and static compliance (↓ in PIP and plateau)
Indicates improvement in Raw and lung/thoracic compliance (difference between PIP and plateau ↓)

2. MODE
INDICATIONS
Control Ventilation
The patient that “fights” the vent
Tetanus or other seizure activity
Complete rest for the patient for a 24 hour period
Patients with crush injuries to improve paradoxical chest wall movement
Assist Control Ventilation
Stable respiratory drive and can trigger vent
Safe for patient if they stop triggering vent
SIMV
Provide partial ventilatory support
Improve a period of rest
Ease the patient from full support towards weaning