216 Appendix D: Monitor Ranges and Accuracies Operator's manual
L2786 Rev. M
P
tp
PEEP The difference between the corresponding airway
and esophageal pressures at the end of the
expiratory hold during an AutoPEEP maneuver.
Requires an inspiratory hold
−60 to 120
cmH
2
O
± 2 cmH
2
O or ± 5%, whichever is greater
MIP The maximum negative airway pressure that is
achieved by the patient, during an expiratory hold
−60 to 120
cmH
2
O
± 2 cmH
2
O or ± 5%, whichever is greater
P
100
The negative pressure that occurs 100 ms after an
inspiratory effort has been detected.
−60 to 120
± 2 cmH
2
O or ± 5%, whichever is greater
Display Description Range Accuracy
WOB
V
The summation of airway pressure (P
AW
) minus the
baseline airway pressure (PEEP
AW
) times the
change in tidal volume to the patient (∆V) during
inspiration, and normalized to the total inspiratory
0.00 to 20.00
Joules/L
+ 10%
WOB
P
Patient Work of Breathing (WOB
P
), normalized to
the total inspiratory tidal volume. Patient work of
breathing is defined as the summation of two work
components: work of the lung and work of the chest
wall. Requires an esophageal balloon.
0.00 to 20.00
Joules/L
+
10%
WOB
I
The work performed by the patient to breathe
spontaneously through the breathing apparatus, i.e.
the E.T. tube, the breathing circuit, and the demand
flow system. Requires a tracheal catheter.
0.00 to 20.00
Joules/L
+ 10%
Note:
Monitored values are displayed as BTPS