Covidien Puritan Bennett 560 User Manual page 140

Glossary
LED
Light Emitting Diode; used as indicator lights on the ventilator's front panel.
lpm
Litres Per Minute (a unit of volume flow rate).
Machine Hours
Counter for the total ventilation time since manufacture or the last CPU board change.
Mains
AC power supply.
Max Leak
The maximum alarm setting of a high leakage threshold. An alarm will be triggered in the event the
calculated leakage is exceeded.
Max Rtot (Total breath rate)
The maximum alarm setting to prevent hyperventilation or ventilator autotriggering. The HIGH
RATE alarm will be triggered if the total breath rate exceeds the maximum limit set.
Max P (Maximum Inspiration Pressure)
Max P allows the ventilator to adjust the inspiratory pressure up to a maximum limit in order to
reach the target tidal volume (Vt Target).
Mbar
An abbreviation for "millibar" which is a unit of measure for atmospheric pressure.
Mean Airway Pressure
Average patient pressure during each breath.
Minimum Exhalation Time
Minimum exhalation time before allowing the patient inspiratory trigger.
Minimum Inspiratory Time
Minimum inspiratory time before allowing the patient to exhale.
M Vol (
Minute Volume)
Flow delivered at each breath to the patient is measured by the inspiratory flow sensor and that
measurement is used to calculate minute volume (Vt x Rtot)
Nurse Call
This function allows for remote alerts of ventilator alarm conditions (for example, when the
ventilator is in an isolation room)
P A/C (Pressure Assist /Control)
A ventilator mode which provides machine-initiated breaths delivered at a clinician-set pressure,
inspiratory time, and rate.
Patient Breath
Breathing cycle initiated by the patient.
G-4
User's Manual