Good to know!
To use V-Check™, select the SenTec-preconfigured SDM
Profile V-CHECK as standard ‘SDM Profile’. This will set the
sensor temperature to 43.5 °C, the ‘Site Time’ to 0.5 hours,
SITE PROTECTION to ON, the ‘Calibration Interval’ to 1 hour,
and the ‘Time Range for Trends’ to 15 minutes.
PCO
2
In-Vivo Correction
Subject to institution’s permission, ‘In-Vivo Correction’ (IC)
of PCO
2
values is possible at the bedside. The ‘PCO
2
In-Vivo
Correction’ allows for adjusting the SDM’s PCO
2
readings based
on the result of an arterial blood gas analysis. The ‘PCO
2
In-
Vivo Correction’ adjusts the ‘Metabolic Offset’ (M) used in the
‘Severinghaus Equation’ (p.
5
) such that the difference
between the PCO
2
value displayed by the SDM when taking
the blood sample and the PaCO
2
value as determined by the
blood gas analysis cancels out. The ‘PCO
2
In-Vivo Correction’
should only be used when a systematic difference between
the SDM’s PCO
2
readings and PaCO
2
is clearly established by
several arterial blood gas measurements
Note: ‘The Quick Access Menu’ provides a short-cut to the
sub-menu ‘PCO
2
In-Vivo Correction’, which is only accessible if
enabled by the institution.
Note: If PCO
2
values are in-vivo corrected, the ‘PCO
2
In-Vivo
Correction’ indicator (‘IC-indicator’) is displayed adjacent to
the PCO
2
label (IC=xx.x (if ‘mmHg’); IC=x.xx (if ‘kPa’), where
xx.x/x.xx is the current offset, respectively; if additionally a
fixed ‘Severinghaus Correction’ is used, the ‘PCO
2
In-vivo
Correction’ offset is marked with an asterisk: e.g. ‘IC=x.xx*’.).
WARNING: A ‘PCO
2
In-Vivo Correction’ should only
be enabled by personnel understanding the principles and
limitations of transcutaneous PCO
2
monitoring (p.
6
).
If a ‘PCO
2
In-Vivo Correction’ is made it must be checked
periodically and adapted in case of changes.
Patient Data Management
The SDM automatically stores PCO
2
, PO
2
, SpO
2
, PR, RHP and
PI data as well as system status information in its internal
memory for subsequent on-screen viewing or printing of
graphical trends and statistical summary/histograms. The
Data Recording Interval is institution-selectable between
1 and 8 seconds and provides between 35.2 and 229.9 hours
of monitoring data, respectively. V-STATS™ provides fast data
download to the PC with V-STATS™ (approx. 3 min. for 8 hours
data at 4-seconds resolution) for subsequent display, analysis
and reporting within V-STATS™.
Patient data acquired by the SDM can be output through the
multipurpose I/O-port (analog output; nurse call), the serial
data port (RS-232) or the LAN port, all located on the rear
panel of the SDM. These ports can be connected to external
devices such as multiparameter bedside monitors, PCs,
poly(somno)graphs, nurse call systems, chart recorders or
data loggers.
