Sentec SDM - Page 56

4 Troubleshooting
HB-005615-j
50
Problem
Possible Cause(s)
Recommended corrective action(s)
P0102
PCO2 too
high
OR
PO2 too low
Low perfusion at
the (hypoperfused)
measurement site
Limitation of the method. Evaluate the
patient status. Shock, low cardiac
index,hypothermia and inadequate local
vasodilatation are physiological limitations of
the method. Avoid any mechanical pressure /
stress on the measurement site. Verify that
the sensor temperature is appropriately
selected for the specific patient/ skin
condition at the measurement site and the
enabled parameters. When selecting/
increasing sensor temperature carefully
balance benefit (more accurate
measurements) versus risk (potential skin
burns). Carefully read the section “Sensor
Temperature & Site Timer” in the Technical
Manual for the SDM .
Remember: In most patients PO2
monitoring requires higher temperatures than
PCO2 monitoring. In newborns, PO2
correlates with PaO2 almost in a one to one
relationship at a sensor temperature of 43 to
44 °C, whereby the accuracy of PO2
compared to PaO2 is best up to PaO2 = 80
mmHg (10.67 kPa), above which it
increasingly tends to read lower than PaO2
(especially in adults).
Sensor applied to a
measurement site
that is inadequate /
not recommended
for PCO2
monitoring.
Refer to identical ‘Possible Cause’ in P0100
for recommended corrective action(s)
Arterio-venous
shunts, e.g. ductus
arteriosus.
Ensure that the sensor site and thee arterial
sampling site are on the same side of the
shunt
Presence of
hyperoxemia (PaO2
> 100 mmHg)
Remember: In newborns, PO2 correlates
with PaO2 almost in a one to one relationship
at a sensor temperature of 43 to 44 °C,
whereby the accuracy of PO2 compared to
PaO2 is best up to PaO2 = 80 mmHg (10.67
kPa), above which it increasingly tends to
read lower than PaO2 (especially in adults).
PCO2 part of the
sensor unstable
(causing drift)
Refer to identical ‘Possible Cause’ in P0101
for recommended corrective action(s)