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9.1.2 Required conditions for use
Make sure the following conditions are met before attempting
a P/V Tool maneuver.
• The patient must be intubated and ventilated but not
breathing spontaneously. Some patients can require heavy
sedation or neuromuscular blockade to prevent spontane-
ous breathing efforts.
• There must be no gas leak throughout the entire system
composed of the ventilator, the breathing circuit, and the
ventilated patient.
• Nebulization must be deactivated.
• The flow sensor must perform optimally.
• Total respiratory system compliance must be a minimum of
5 ml/cmH2O. (The P/V Tool maneuver does not function
correctly with the IngMar infant lung model.)
• The P/V Tool is inactive in SPONT, NIV, NIV-ST, nCPAP-PS and
in Backup modes.
• The P/V Tool is inactive
Flow sensor calibration
needed
Alarm is active.
9.1.3 Indication for use
As long as the required conditions are met and no contraindi-
cations exist, the P/V Tool maneuver may be performed on any
patient.
The P/V Tool maneuver is particularly valuable for use with
restrictive lung “stiff lung” diseases (for example, ALI or ARDS
patients).
Be careful when performing the P/V Tool maneuver on patients
with obstructive “soft lung” diseases (for example, COPD). Set
Ptop
low to prevent generation of excessive volumes.
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