High Frequency Oscillatory Ventilation
SensorMedics High Frequency Oscillator 3100a

SensorMedics Front Panel

Diagram displaying set up of SensorMedics circuit

        Start-up and Initiating HFOV SensorMedics Oscillator

        Initiating HFOV is the responsibility of the medical staff.

        Always ensure that the Sensormedics Oscillator is plugged into the red uninterrupted power supply (UPS).

        An oxygen analyzer is required in circuit and placed accordingly (see diagram).

        Perform circuit calibration:

15 Ensure stopper is inserted in patient Y connection (a lung is not used).

16 Turn Bias gas flow to 20 LPM. Switch machine on.

17 Turn Mean Pressure Limit to max

18 Turn Mean Pressure Adjust to max

19 Depress and hold reset. Observe PAW display for a reading of 39-43cm H2O. Adjust bias gas flow slightly to achieve this if necessary.

20 An inability to achieve this PAW means a leak in the circuit.

21 (Refer to troubleshooting

22 Initiating treatment

23 Turn Bias gas flow back to 15 LPM

24 Set frequency (Hz) to 10-15 as per medical order

25 Our default setting is 10Hz

26 Check Inspiratory-time is 33%

27 Set power on 2.

28 Determine treatment MAP. Rotate the mean pressure limit anti-clockwise to set PAW (MAP) to limit 5cm above treatment setting. Be aware if the infant later requires higher MAP levels, the limit may have to be increased.

29 Rotate Mean Pressure Adjust control anti-clockwise to set treatment MAP.

30 Note: These dials are sensitive to major adjustments.

31 If a very high MAP is required, the Bias gas flow may have to be increased to 20 LPM.

32 Set pressure alarms 2cm above and 3cm below set PAW.

33 Check inspired O2 level on O2 blender to the side of oscillator.

34 Press ‘start’ to commence HFOV on infant. Medical staff to adjust amplitude while observing chest movement.

35 Adjust Piston Control to keep the piston in a central position.

36 Turn...