Breas VIVO 55 Ventilator: Setting up the patient circuit for non-invasive ventilation

This patient circuit is the equipment required to set up a patient with COVID-19 on a VIVO 55 non-invasive ventilator (or CPAP machine).

Patient interface

  • The patient interface is a full-face, non-vented mask which fits over the patient’s nose and mouth and secured using straps
  • Ensure the mask is not too loose or too tight
  • The elbow of the mask should be blue; this means that there is no exhalation valve which is important for infection control in COVID-19

Two antibacterial-viral filters

  • The first filter sits immediately after the patient interface, and filters the air that the patient exhales
  • The second filter, at the machine end of the circuit, filters the air that is delivered to the patient

Leak port (exhalation valve)

  • The valve attaches to the antibacterial-viral filter and ensures the patient does not re-breath their waste gases
  • The exhalation valve MUST follow the antibacterial-viral filter in the circuit to prevent unnecessary aerosolisation of the patient’s exhaled breath

End-tidal CO2 monitor

  • The end-tidal CO2 monitor monitors the carbon dioxide that the patient is exhaling
  • It comes in two parts; the airway adapter (single patient use) and the sensor that connects to the ventilator

Standard 22mm circuit tubing

  • The standard 22mm circuit tubing connects the end-tidal CO2 monitor to the machine-end filter

FiO2 sensor

  • The FiO2 sensor provides a measurement of the FiO2 being delivered to the patient
  • It connects to the patient air outlet on the right side of the ventilator, and the cable connects to the FiO2 monitoring sensor input on the right side of the ventilator
Mark as Understood

© Institute of Clinical Science and Technology (ICST) 2020