With the entrainment of oxygen in a ventilator, an FiO₂ sensor is necessary to monitor the patient’s inspired oxygen concentration (FiO₂).

The FiO₂ sensor has three components. Installation involves the following steps:

1. Connect the FiO₂ sensor to the middle of the T-piece adapter
2. Connect the sensor cable to the top of the FiO₂ sensor
3. Connect one end of the T-piece to the patient circuit outlet on the right side of the VIVO 55 ventilator
4. Connect the white FiO₂ sensor cable to the white FiO₂ outlet, found on the right side of the device

On installation of a new oxygen cell, the machine should be calibrated:

1. Assemble the FiO₂ sensor, as above
2. Connect an oxygen supply to the oxygen inlet on the right side of the device
3. Switch on the ventilator
4. To access the calibration in the menu, select the ‘others’ menu, and locate the ‘FiO₂/ CO₂ calibration’ option
5. Follow the on-screen instructions to calibrate the FiO₂ sensor

Once the FiO₂ sensor has been set up and calibrated, the machine will give a FiO₂ reading when the ventilator is running. The FiO₂ sensor will need changing approximately every 6-months.

It’s important to note, oxygen should only be entrained while the device is running.