Safety Pop Off Valve
Manual Ventilation
Screw-down pop-off valve open with push-button valve de
-
pressed.
In this position the breathing circuit is closed but will leak at
pressures of 20-25 cm H2O. This allows enough pressure to
manually ventilate the patient without risking excessive pressure
(which can cause pulmonary damage and death).
User Error Safety (pop off valve left closed)
Screw-down pop-off valve closed with push-button valve open
In this position the breathing circuit is partially closed but will
leak at 0.5 cm H2O. This will not cause injury to the patient,
however depressing the push-button valve to ventilate the
patient would allow excessive pressure and could injure the
patient.
This setting is designed to prevent patient deaths associated
with leaving the pop-off valve closed but it is not recommended
for normal operation.
Normal Operation
Screw-down pop-off valve open with push-button valve up
In this position the breathing circuit is fully open. The manom
-
eter should read "0" with slight fluctuations during respiration.
Squeezing the rebreathing bag should not create pressure in the
breathing circuit.
