User Manual corpuls
3
Operation – Monitoring and Diagnosis
ENG - Version 2.1 – P/N 04130.2 115
6.5 Oximetry Monitoring (Option)
6.5.1 Information on Oximetry Monitoring
Oximetry is a non-invasive monitoring method for continuous measurement of
the arterial oxygen saturation (SpO
2
), the level of methemoglobin (SpMet) and,
depending on the used oximetry sensor (see chapter 9.8 Approved Accessories,
Spare Parts and Consumables, page 224), the level of carboxyhemogolobin
(SpCO
)
or the level of total hemoglobin (SpHb) in the blood. The specific
reduction in the absorbance of oxygenated and deoxygenated hemoglobin is
measured with light of different wavelengths by means of a photo sensor.
Comparison of the values yields the respective SpO
2
-, SpCO- and SpMet
values as percentage and, depending the configuration, the SpHb value in g/dl
or mmol/l. Additionally, the oximetry measures the peripheral pulse rate (PP)
per minute and the perfusion index (PI) in percentage.
The vital parameters SpMet, SpCO and SpHb of the oximetry option are only
available for corpuls
3
devices that have been delivered after 07/2011. Devices
delivered before 07/2011 can be retrofitted.
Six parameter fields for display of the numerical measurement values can be
configured. The oximetry plethysmogram (pleth) can be displayed in a curve
field.
The signal intensity is a quality criterion for the capturing of measurement
values .The signal intensity is measured and displayed as a horizontal bar in the
parameter field SpO
2
(see p. 118 Fig. 6-19, item 1).
Warning
Increased SpHb value: SpHb values above normal tend to increase the level
of SpO
2
. The level of increase corresponds approximately to the amount of
SpHb that is present.
Warning
Increased SpMet value: The SpO
2
value may be decreased by levels of
SpMet of up to approximately 10% to 15%. At higher levels of SpMet the
SpO
2
value may tend to read in the low to mid 80s. When elevated levels of
SpMet are suspected, a blood sample should be analyzed (CO-Oximetry).
Warning
The alarm limits must be verified every time the oximeter is used to ensure
that these are appropriate for the patient currently being monitored.
Warning
If the accuracy of the oximetry measurement does not seem plausible (e.g.
due to influences of movement, bright sunlight, Xenon OP lamps or due to
photodynamic therapy with bilirubin lamps) check first of all whether there is
any acute change in the patient’s vital signs. Subsequently check whether the
pulse oximeter works correctly. Refer to the list of approved accessories (see
chapter 9.8 Approved Accessories, Spare Parts and Consumables, page 224)
for a light shield ensuring interference-free measurement.
To Next Page
Loading...
