183
HemoSphere Advanced Monitor 13 Troubleshooting
Alert: CO – Unstable Arterial
Pressure Signal
Arterial waveform inadequate to measure
CO accurately
Integrity of arterial pressure monitoring
line is compromised
Systolic pressure too high or diastolic
pressure too low
Assess Edwards continuous CO system starting from
patient leading to pressure bag
Check the arterial waveform for severe hypotension,
severe hypertension, and motion artifact
Make sure the arterial catheter is not kinked or clotted
Make sure all arterial pressure lines are patent and
stopcocks are properly positioned
Make sure Edwards CO sensor is aligned with the
patient’s phlebostatic axis
Zero the Edwards CO sensor on HemoSphere advanced
monitor to zero transducer and confirm pressure cable
connection
Make sure the pressure bag is inflated and flush bag is at
least ¼ full
Perform Square Wave Test to assess Edwards
continuous CO system frequency response
Alert: CO – Pulse Pressure Low Integrity of pressure monitoring line is
compromised
Patient condition results in a low pulse
pressure
Assess Edwards CO system starting from patient leading
to pressure bag
Check the arterial waveform for severe hypotension,
severe hypertension, and motion artifact
Make sure the arterial catheter is not kinked or clotted
Make sure all arterial pressure lines are patent and
stopcocks are properly positioned
Make sure the Edwards CO sensor is aligned with the
patient’s phlebostatic axis
Zero the Edwards CO sensor on HemoSphere advanced
monitor to zero transducer and confirm pressure cable
connection
Make sure the pressure bag is inflated and flush bag is at
least ¼ full
Perform Square Wave Test to assess Edwards CO
system frequency response
Alert: CO – Pressure Waveform
Not Stable
Arterial waveform is inadequate to
measure CO accurately
Integrity of pressure monitoring line is
compromised
Systolic pressure too high or diastolic
pressure too low
Fluid line is being flushed
Assess Edwards continuous CO system starting from
patient leading to pressure bag
Check the arterial waveform for severe hypotension,
severe hypertension, and motion artifact
Make sure the arterial catheter is not kinked or clotted
Make sure all arterial pressure lines are patent and
stopcocks are properly positioned
Make sure Edwards CO sensor is aligned with the
patient’s phlebostatic axis
Zero the Edwards CO sensor on HemoSphere advanced
monitor to zero transducer and confirm pressure cable
connection
Make sure the pressure bag is inflated and flush bag is at
least ¼ full
Perform Square Wave Test to assess the Edwards
continuous CO system frequency response
Table 13-14 HemoSphere pressure cable CO faults/alerts
Message Possible causes Suggested actions
Status = Released Printed Date: 2018-01-16 Released Date: 2017-09-14
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