CareFusion AVEA - Page 229

AVEA ventilator systems Appendix D: Monitor Ranges and Accuracies 215
L2786 Rev. M
Display
Description
Range
Accuracy
C
LUNG
The ratio of the tidal volume (exhaled) to the delta
transpulmonary pressure. The delta
transpulmonary pressure is the difference between
the airway plateau pressure (during an inspiratory
pause) and esophageal pressure (at the time the
airway plateau pressure is measured) minus the
difference between the airway and esophageal
baseline pressures. Requires an inspiratory hold
and esophageal balloon.
0 to 300
mL/cmH
2
O
+
10%
C
20
/ C The ratio of the dynamic compliance during the last
20% of inspiration (C
20
) to the total dynamic
compliance (C).
0.00 to 5.00 + 10%
Display
Description
Range
Accuracy
R
RS
The total resistance during the inspiratory phase of
a breath. Respiratory System Resistance is the
ratio of the airway pressure differential (peak –
plateau) to the inspiratory flow 12 ms prior to the
end of inspiration. Requires an inspiratory hold.
0 to 100
cmH
2
O/L/sec
+
10%
R
PEAK
The Peak Expiratory Resistance (R
PEAK
), is defined
as the resistance at the time of the Peak Expiratory
Flow (PEFR).
0.0 to 100.0
cmH
2
O/L/sec
+
10%
R
IMP
The airway resistance between the wye of the
patient circuit and the tracheal sensor. Requires an
inspiratory hold and tracheal catheter.
0.0 to 100.0
cmH
2
O/L/sec
+
10%
R
LUNG
The ratio of the tracheal pressure differential (peak
– plateau) to the inspiratory flow 12 ms prior to the
end of inspiration. Requires an inspiratory hold and
tracheal catheter.
0.0 to 100.0
cmH
2
O/L/sec
+
10%
dP
AW
The difference between peak airway pressure
(P
PEAK AW
) and baseline airway pressure (PEEP
AW
).
−120 to 120
cmH
2
O
+ 2 cm H
2
O or + 5% whichever is greater
dP
ES
The difference between peak esophageal pressure
(P
PEAK ES
) and baseline esophageal pressure
(PEEP
ES
).
−120 to 120
cmH
2
O
+
2 cm H
2
O or + 5% whichever is greater
AutoPEEP The airway pressure at the end of an expiratory
hold maneuver. Requires a passive patient.
0 to 50 cmH
2
O + 2 cm H
2
O or + 5% whichever is greater
dAutoPEEP The difference between airway pressure at the end
of an expiratory hold maneuver and the airway
pressure at the start of the next scheduled breath
after the expiratory hold maneuver. Requires a
passive patient.
0 to 50 cmH
2
O + 2 cm H
2
O or + 5% whichever is greater
AutoPEEP
ES
The difference between esophageal pressure
measured at the end of exhalation (PEEP
ES
) minus
the esophageal pressure measured at the start of a
patient-initiated breath (P
ES start
) and the sensitivity
of the ventilator’s demand system. The sensitivity
of the ventilator’s demand system is the difference
between the baseline airway pressure (PEEP
AW
)
and the airway pressure when the patient initiates a
breath (P
AW start
). Requires an esophageal balloon.
0 to 50 cmH
2
O + 2 cm H
2
O or + 5% whichever is greater
Ptp Plat Transpulmonary pressure during an inspiratory
hold, which is the difference between the airway
plateau pressure (P
PLAT AW
) and the corresponding
esophageal pressure. Requires an inspiratory hold
and esophageal balloon.
−60 to 120
cmH
2
O
+
2 cm H
2
O or + 5% whichever is greater