CareFusion AVEA - Sensitivity; Start; Stop

116 Chapter 4: Monitors, Displays and Maneuvers Operator's manual
L2786 Rev. M
Sensitivity
The maneuver sensitivity establishes the level below PEEP that the airway pressure must
drop, which determines the onset of a patient effort. This allows the clinician to set the
maneuver appropriate to patient ability.
Range: 0.1 to 5.0 cmH
2
O
Resolution: 0.1 cmH
2
O
Default: 3.0 cmH
2
O
Note:
Excessively high setting of the maneuver sensitivity can affect the accuracy of timing for P100 determination.
Start / Stop
The maneuver begins when the START key is actuated. The maneuver will be immediately
terminated should the operator activate the STOP key and normal ventilation will resume.
Note:
If the Start key is activated during a mandatory inspiratory breath the maneuver will not commence until the ventilator
cycles into exhalation and the minimum expiratory time of 150 msec has elapsed.
Alarms
All currently available alarms shall be active during the MIP / P
100
maneuver except Apnea Interval and
Low PEEP.
To Perform a MIP / P100 Maneuver:
The MIP / P100 maneuver allows the measurement of the Maximum Inspiratory Pressure (MIP) achieved by the patient
during an expiratory hold maneuver. The ventilator can also measure the P100 value which is the maximum inspiratory
pressure achieved in the first 100 milliseconds of the maneuver.
From the Maneuvers Screen select MIP P100
The MIP maneuver screen allows the operator to set:
Duration – This is the time period that ventilation is suspended to conduct the maneuver. Once the Start button is
depressed normal ventilation will be suspended until the Duration time period has elapsed or the operator presses the
Stop button.
Sensitivity – This sets the sensitivity threshold that the ventilator uses to begin the timer for the P100 maneuver. The
default position is 3 cmH
2
O but can be adjusted by the operator to assure accuracy in patients with minimal inspiratory
effort.