7-26 624074/07
7 Monitoring
Pminimum
(cmH
2
O)
Monitoring 1 Minimum airway pressure of the previous
breath cycle.
Pminimum can be lower than the PEEP/CPAP if
TRC is active, or if the patient is making strong
inspiratory efforts.
Ppeak
(cmH
2
O)
Monitoring 1 Peak airway pressure. The highest pressure of
the previous breath cycle. It is influenced by air-
way resistance and compliance. It can be higher
than expected due to the device’s breathing cir-
cuit compensation. It can differ noticeably from
alveolar pressure if airway flow is high.
Pplateau
(cmH
2
O)
Monitoring 1 Plateau or end-inspiratory pressure. The pres-
sure measured at the end of inspiration when
flow is or is close to zero.
• In volume modes when the set
Pause
is
greater than zero.
• In non-volume modes when the end-
inspiratory pressure is very stable (pressure
change < 1 cmH
2
O over 100 ms).
Pplateau is a rough representation of alveolar
pressure.
Table 7-1. Monitored parameters
Parame-
ter (unit)
Monitoring
Window
Definition
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