624074/07 7-25
PetCO
2
(mmHg/
Torr/kPa)
Monitoring 2 End-tidal CO
2
pressure.
The maximum partial pressure of CO
2
exhaled
during a tidal breath (just before the start of
inspiration). It represents the final portion of air
that was involved in the exchange of gases in
the alveolar area. Under certain conditions, it
represents a reliable index of CO
2
partial pres-
sure in the arterial blood.
Note: Inaccurate in pulmonary embolism
Available if CO
2
sensor is installed.
Pcuff
(cmH
2
O)
Monitoring 2 Pressure measured in the cuff at the end of
exhalation.
PI (%) Monitoring 2 Perfusion index. Indicates pulse strength at the
sensor location.
Pinsp
(cmH
2
O)
Vent Status
panel
Only inspiratory pressure, the target pressure
(additional to PEEP/CPAP) applied during the
inspiratory phase. Available in ASV, Trends, and
in the Vent Status panel. Pinsp is:
ASV and APV modes: Automatically calculated
target pressure
Pressure-controlled modes (P-CMV, P-SIMV):
Pcontrol (setting)
Pressure-supported modes (SPONT, DuoPAP,
APRV, NIV): Psupport (setting)
Volume-controlled modes (CMV, SIMV):
Pplateau (monitored parameter) – PEEP. When
Pplateau is not available, Pinsp = Ppeak (moni-
tored parameter) – PEEP
Pmean
(cmH
2
O)
Monitoring 1 Mean airway pressure (Ppeak – PEEP/CPAP)
over 8 breath cycles.
Pmean is an important indicator of the possible
impact of applied positive pressure on hemody-
namics and surrounding organs.
Table 7-1. Monitored parameters
Parame-
ter (unit)
Monitoring
Window
Definition
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