624074/07 7-35
VTE NIV
(ml)
Monitoring 1 Expiratory tidal volume. The volume exhaled by
the patient.
Used only in Noninvasive modes (NIV, NIV-ST,
nCPAP-PS), this parameter replaces VTE, as it is
leak compensated.
VTE Spont
(ml)
Monitoring 1 Spontaneous expiratory tidal volume. The vol-
ume exhaled by the patient. if there is a gas
leak at patient side, the displayed VTEspont
may be less than the tidal volume the patient
actually receives. Only displayed for spontane-
ous breaths.
VTI (ml) Monitoring 1 Inspiratory tidal volume. The volume by the
ventilator. It is determined from proximal Flow
sensor measurement.
VT/IBW
(ml/kg)
Monitoring 1 Tidal volume/ ideal body weight ratio to avoid
excessive tidal volumes and apply lung-protec-
tive strategies.
WOBimp
(J/l)
Monitoring 2 Work of breathing imposed by the inspiratory
valve, tubing, and humidifier. It is airway pres-
sure integrated over inspiratory volume until
pressure exceeds the PEEP/CPAP level. In the
dynamic pressure/volume loop, WOBimp is the
area below PEEP/CPAP. This is created exclu-
sively by the patient; thus WOBimp is valid for
patient-initiated breaths only.
If based on Paw, WOBimp indicates the work
required of the patient to be on a ventilator. It
does not include work resulting from the endo-
tracheal tube and the total respiratory system.
If based on endotracheal pressure using Paux,
WOBimp includes work resulting from the
endotracheal tube.
The significance of WOBimp is similar to that of
PTP. For more information, see the description
of the PTP parameter in this table.
1. Available only with the Masimo Rainbow SET option. Not compatible with Nihon-Kohden.
Table 7-1. Monitored parameters
Parame-
ter (unit)
Monitoring
Window
Definition
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