Oper
ation
29
5
5.3.2 Ventilation with conventional tubes
1 Induce total intravenous anesthesia (TIVA).
2
Intubate patient as usual with tube of choice.
3 Oxygenate patient as preferred to allow deepening of anesthesia.
4 Connect tube to CTA of Evone when anesthesia is deepened.
5 Start ventilation in FCV
®
mode. A triangular pressure curve appears on the screen (Fig 5.6).
6 If needed adapt ventilation settings:
- FiO
2
as preferred
- EEP as preferred
- Peak to adjust Tidal Volume
- Inspiratory Flow to adjust Minute Volume.
Note that spontaneous breathing is not possible when the CTA is connected to
the conventional adult endotracheal tube.
5.3.3 Handling obstructions
1 Stop ventilation.
2 Fiercely flush the pressure lumen and/or ventilation lumen with 2-5 mL saline
followed by ~15 mL air.
3 In case secretions are still present in ventilation lumen, remove secretions using
a suction catheter.
Note that the airway needs to be open.
4 Purge lumen again with 2 mL saline followed by air.
5 In case of Tritube: slightly turn Tritube to avoid any tracheal wall contact and inflate cuff.
6 Re-start ventilation.
Warning: Do not use a closed suction catheter in combination with Evone.
