7-28 624074/07
7 Monitoring
QI-SpO
2
Monitoring 2 Quality Index of the SpO
2
reflects the reliability
of the SpO
2
value expressed in percentage. The
greater the QI value, the greater reliability of
the SpO
2
value.
Rate inc
(%)
Monitoring 2 Quick Wean parameter.
Percentage increase in breathing rate. This is
calculated during a spontaneous breathing trial
(SBT).
For details, see the Quick Wean chapter in the
INTELLiVENT
®
-ASV manual.
RCexp
(s)
Monitoring 1 Expiratory time constant. The time the lung is
fully deflated:
Actual TE% emptying
1 x RCexp 63%
2 x RCexp 86.5%
3 x RCexp 95%
4 x RCexp 98%
RCexp is calculated as the ratio between VTE
and flow at 75% of the VTE.
For adults, an RCexp value above 1.2 s indi-
cates airway obstruction, and a value below 0.5
s indicates a severe restrictive disease.
Table 7-1. Monitored parameters
Parame-
ter (unit)
Monitoring
Window
Definition
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