Level | Causes |
---|---|
Motor neurons | Trauma/ALS |
Phrenic nerve | Critical illness polyneuropathy |
Neuromuscular junction | NMBA/myasthenia gravis/poisoning |
Diaphragm | Myotrauma |
Equation of motion | |
 ↑Rrs | Obstructive diseases (asthma/COPD) |
 ↑Ers | Restrictive diseases (ARDS) |
 ↑PEE | Dynamic hyperinflation |