| Cannula, nasal, oxygen | 54 | — |
| Cannula, nasal, oxygen / Analyzer, gas, carbon-dioxide, gaseous-phase | 9 | — |
| Cannula, nasal, oxygen / Analyzer, gas, carbon-dioxide, gaseous-phase | 10 | — |
| Catheter, nasal, oxygen | 7 | — |
| Catheter, nasal, oxygen / Cannula, nasal, oxygen | 13 | — |
| Conserver, oxygen / Cannula, nasal, oxygen | 14 | — |