Altitude - ZOLL AEV Operator's Manual

Altitude

The ZOLL 731 Series Ventilator is designed to operate from -610 to 7620 meters (-2,000 to
25,000 feet). An absolute barometric pressure sensor monitors ambient pressure and the unit
uses this information to continuously correct the output of the device to maintain the ventilation
parameters. When the altitude is > 25,000 feet, the unit activates a Low Priority alarm. When
this occurs, you should monitor the peak inspiratory pressure (PIP) and adjust the tidal volume
to maintain the PIP and monitor breath sounds and chest excursion to assure the unit maintains
adequate ventilation. The tidal volume increases as altitude increases, so you should look to
prevent over-pressurization of the lung when the altitude increases beyond 25,000 feet. If
changes are made above 25,000 feet, you should revert to the initial settings once operation
resumes in the compensated range (the LED will turn from yellow to green).
Warning! The unit is not intended for hyperbaric operation. Use in a hyperbaric chamber can
result in harm to the patient and/or damage to the device.
906-0731-01-05 Rev. C ZOLL Ventilator Operator's Guide 6-3