CareFusion AVEA - Page 141

AVEA ventilator systems Chapter 4: Monitors, Displays and Maneuvers 127
L2786 Rev. M
Display Value
WOB
V
Ventilator Work of Breathing (WOB
V
), is the summation of airway pressure minus the baseline airway pressure times the change in
tidal volume to the patient during inspiration, and normalized to the total inspiratory tidal volume
AutoPEEP AutoPEEP, is the airway pressure at the end of an expiratory hold maneuver.
dAutoPEEP Delta AutoPEEP (dAutoPEEP), is 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
P
tp
PEEP Transpulmonary pressure, AutoPEEP (P
tp
PEEP) is the difference between the corresponding airway and the esophageal pressures
at the end of the expiratory hold during an AutoPEEP maneuver.
AutoPEEP
ES
AutoPEEP
ES
is the difference between esophageal pressure measured at the end of exhalation minus the esophageal pressure
measured at the start of a patient-initiated breath and the sensitivity of the ventilator’s demand system
C
CW
Chest wall Compliance (C
CW
), is the ratio of the tidal volume (exhaled) to the Delta Esophageal Pressure (dP
ES
).
C
LUNG
Lung Compliance (C
LUNG
), is the ratio of the tidal volume (exhaled) to the delta transpulmonary pressure
P
tp
Plat Transpulmonary pressure during an inspiratory hold
MIP Maximum Inspiratory Pressure is the maximum negative airway pressure that is achieved by the patient, during an expiratory hold
maneuver
P
100
Respiratory Drive (P
100
), is the negative pressure that occurs 100 ms after an inspiratory effort has been detected
nCPAP Mean airway pressure while in nCPAP mode
CPAP Flow Mean inspiratory flow while in nCPAP mode
EtCO
2
Peak expired CO
2
as measured and reported by the CO
2
sensor in the aiway. EtCO
2
is measured for each breath. Display is either
a breath-by-breath or averaged measurement.
VCO
2
The amount of CO
2
eliminated every minute. This is calculated over each minute and then averaged over the set VCO
2
averaging
time.
VtCO
2
The amount of CO
2
exhaled per breath. It is measured for each breath and then averaged over the set VCO
2
averaging time.
Vdana The volume of dead space in the patient’s airway. Anatomical dead space is measured for each breath. This value is averaged
over the set
V
CO
2
averaging time.
Vdana/Vt
Vd/Vt ana is averaged over the set VCO
2
averaging time.