7-30 624074/07
7 Monitoring
Rinsp
(cmH
2
O/
(l/s))
Monitoring 1
NOTE:
Actively breathing patients can create
artifact or noise, which can affect the
accuracy of these measurements. The
more active the patient, the less accu-
rate the measurements. To minimize
patient activity during these measure-
ments, you can choose increased Psup-
port by 10 cmH
2
O. After completion,
return this control to its former setting.
Resistance to inspiratory flow caused by the
endotracheal tube and the patient’s airways,
during inspiration. It is calculated using the LSF
method applied to the inspiratory phase.
RSB
(1/(l*min))
Monitoring 2 Rapid shallow breathing index. The total
breathing frequency (fTotal) divided by the
exhaled tidal volume (VTE). It has significance
for spontaneously breathing patients only.
Patients with dyspnea typically takes faster,
shallower breaths than nondyspneic patients,
RSB is high in the dyspneic patient and low in
the nondyspneic patient.
RSB is often used clinically as an indicator to
judge whether a ventilated patient is ready for
weaning.
SBT Time
range
SBT Controls Quick Wean parameter. Defines the hours bet-
ween which an automated spontaneous
breathing trial (SBT) can be started.
For details, see the Quick Wean chapter in the
INTELLiVENT
®
-ASV manual.
slopeCO
2
(%CO
2
/l)
Monitoring 2 Slope of the alveolar plateau. Volume/flow sta-
tus of the lungs. Permits assessment of COPD,
asthma and inefficient ventilation.
Available if CO
2
sensor is installed.
Table 7-1. Monitored parameters
Parame-
ter (unit)
Monitoring
Window
Definition
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