Available in three sizes, Sentri™ permits the sampling of exhaled carbon dioxide in non-intubated patients during the administration of supplementary oxygen. By delivering oxygen through one prong and sampling exhaled gas from the other, the nasal cannula provide end tidal values comparable to those achieved with intubated patients. Nasal cannula may be more appropriate for paediatric patients when high oxygen flows may dilute the CO2
sample and give a low (or no) value.
Microstream is a registered trademark of Oridion 1987 Ltd.