906-0731-01-05 Rev. C ZOLL Ventilator Operator’s Guide 4-9The following table gives the options and ranges for the Vt parameters:PIP (Peak Inspiratory Pressure) -- Pressure ManagementIn volume targeted modes, the primary field shows the delivered PIP as outline text. In pressuretargeted modes, the PIP target is displayed and is adjustable. The PIP High Limit, PIP LowLimit, and PEEP are also available as secondary parameters.During the exhalation phase, the ventilator opens the exhalation valve when the pressure isabove the PEEP setting, and closes it when below the setting.In Bilevel Ventilation Mode, the ventilator provides noninvasive ventilation with the ability tomanage the patient by adjusting the IPAP and EPAP parameters.Caution Set the trigger level to minimize the work of breathing for the patient and preventauto-triggering. Set the Vt alarms to bracket average tidal volume so that the unit detects pendingrespiratory failure (low tidal volumes) and excessive leaks (high tidal volumes).Spontaneous/Assisted Breath TriggerThe Spontaneous/Assisted Breath Trigger is preset to -2.0 cm H2O and can be adjusted from-6.0 to -0.5 cm H2O below the baseline (PEEP) pressure. In order to initiate a spontaneous orassisted breath, the patient must generate -2.0 cm H2O. When the pressure drop is detected, anassisted breath is delivered.The trigger automatically adjusts when the PEEP is changed.Parameter Window Options /RangeAvailability/Notes ModelsPrimary Value Vtml50 to 2000 Volume Target: Control SettingPressure Target: MeasuredAllSecondaryAlarm Limits High Vt 50 to 2000,OffLow Vt 5 to 500,OffVt Context MenuTubing Compli-ance (CT)Default : Off OFF, Adult,InfantAuxiliary Box AllAdult Default: 1.60 0 to 3.50 The changed value is notretained when the device isturned OFFAllInfant Default: 0.50 0 to 2.00 AllComplianceVolume (ml)(Measuredvalue )0 to 349 All
