Troubleshooting
10-11
Advanced impedance respiration troubleshooting
Advanced SpO
2
troubleshooting
Symptom
Possible cause and solution
Respiration measurement
fails
•
Check the electrode quality and positioning.
•
Adjust the detection limits. During ventilator-supported breathing, the
respiration calculation may count only ventilator-produced inspirations
and expirations.
•
Other electrical devices may interfere with the measurement.
Why does the waveform
have a combination of
shallow and deep breaths,
but the monitor is not
detecting the shallow
breaths?
If the detection sensitivity threshold is set too high, shallow breaths will not be
detected.
•
Decrease the detection limit percentage until the markers correctly
identify each inspiration and expiration or set to
Auto
NOTE: Respiration detection is not dependent on the size of the waveform.
Size is for visual purposes only.
Why is the monitor
detecting cardiac artifact
as breaths?
The breath detection threshold is too low
•
Increase the detection sensitivity percentage until the markers correctly
identify each inspiration and expiration.
Symptom
Possible cause and solution
SpO
2
signal is poor
•
Check the sensor and sensor positioning.
•
Change the averaging time from slow to normal.
•
Note that skin pigment causes differences.
•
Make sure that the patient is not shivering.
Why does the pulse
oximeter sometimes read
differently than a blood
gas analyzer?
Blood gas analyzers calculate the O2 saturation based on normal values for
pH, PaCO2, Hb, temperature, etc. (i.e., a normal oxyhemoglobin dissociation
curve). Depending on the patient’s physiologic and metabolic status, this
curve and all values may be shifted away from “normal.” Thus the oximeter,
which measures O2 saturation, may not agree with the blood gas.
What effect can ambient
light have on pulse
oximetry monitoring?
Light sources such as surgical lamps, bilirubin lamps, fluorescent lights,
infrared heating lamps, and sunlight can cause poor waveform quality and
inaccurate readings. Error messages are possible. Shielding the sensor with
opaque tape, the posey wrap, or other dark or opaque material can increase
oximetry accuracy, verified by good waveform and signal strength.
Содержание B20
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Страница 16: ...B40 B20 Patient Monitor xii ...
Страница 17: ...1 Introduction ...
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Страница 27: ...2 System description ...
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Страница 59: ...3 Installation ...
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Страница 69: ...4 Monitoring basic ...
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Страница 79: ...5 Alarms ...
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Страница 103: ...6 Monitor setup ...
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Страница 123: ...7 Trends ...
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Страница 141: ...8 Print and record ...
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Страница 153: ...9 Cleaning and care ...
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Страница 163: ...10 Troubleshooting ...
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Страница 215: ...13 Pulse oximetry ...
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Страница 233: ...14 Non invasive blood pressure ...
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