CareFusion AVEA - Appendix J: Electromagnetic Declarations; Guidance and manufacturer’s declaration - electromagnetic emissions

AVEA ventilator systems 223
L2786 Rev. M
Appendix G: Advanced Pulmonary Mechanics Monitored
Parameters
Rapid Shallow Breathing Index (f / V
t
)
The ventilator is capable of displaying the calculated value for Rapid Shallow Breathing Index (f / V
t
),
which is the spontaneous breath rate per tidal volume, and is based on the following formula:
f / V
t
= f
2
/ V
e
, where f = spontaneous breath rate (BPM) and
Ve = spontaneous minute ventilation in LPM
Range: 0 to 500 b
2
/min/L
Resolution: 1 b
2
/min/L
Chest wall Compliance (C
CW
)
Chest wall Compliance (C
CW
), is the ratio of the tidal volume (exhaled) to the Delta Esophageal Pressure
(dP
ES
).
C
CW
=
ES
P
te
d
V
Range: 0 to 300 mL/cmH
2
O
Resolution: 1 mL/cmH
2
O
Note: Requires an esophageal balloon catheter.
Accuracy: ± 10%
Lung Compliance (C
LUNG
)
Lung Compliance (C
LUNG
), is 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.
C
LUNG
=
TP PLAT
dP
teV
, where dP
PLAT TP
= (P
PLAT AW
− P
ES
) − (PEEP
AW
− PEEP
ES
)
Range: 0 to 300 mL/cmH
2
O
Resolution: 1 mL/cmH
2
O
Note: Requires an Inspiratory Hold maneuver and an esophageal balloon catheter.
Accuracy: ±10%