Table 2.
0 | 1 | 2 | Total | |
---|---|---|---|---|
Bubbles | Not present | Intermittent | Continuous | |
Circuit | Contaminated (e.g. mold, biofilm, dirt) | Clean but small diameter (<10 mm) | Clean and wide diameter (≥10 mm) | |
Prongs | Too small | Too large | Occlusive fit | |
Airway | Blocked | Partially blocked | Open with bilateral breath sounds | |
Pressure | Air leak | Intermittent | Maintained at set level |
Table re-used with permission from Oxford Press. “Contaminated” refers to the presence of mold, biofilm, dirt, etc.