Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Abnormalities in the capnogram.
| Abnormality | Setting | |
|---|---|---|
| Inspiratory phase (0) | CO2 > 0% | Rebreathing |
| Phase I | Increased length of phase I | Increased dead space Excessive PEEP |
| Phase II | Decreased phase II slope | Decreased perfusion (PTE, excessive PEEP, low cardiac output) |
| Phase III | Increased phase III slope | Inhomogeneous V/Q:
|
| α angle | Increased angle | The same situations that increase the slope of phase III |
| β angle | Increased angle | Reinhalation of alveolar gas: malfunctioning expiratory valve |
