Edwards HemoSphere

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HemoSphere Advanced Monitor 9 HemoSphere Swan-Ganz Module Monitoring
9.4.3 Initiating Measurement
WARNING CO monitoring should always be discontinued when blood flow around the thermal
filament is stopped. Clinical situations where CO monitoring should be discontinued
include, but are not limited to:
• Time periods when a patient is on cardiopulmonary bypass
• Partial withdrawal of the catheter so that the thermistor is not in the pulmonary
artery
• Removal of the catheter from the patient
When the system is properly connected, touch the start monitoring icon to begin CO
monitoring. The CO countdown timer will appear on the stop monitoring icon. After approximately 6 to 9
minutes, when sufficient data has been obtained, an EDV and/or RVEF value will appear in the configured
parameter globes. The EDV and RVEF values displayed on the screen will be updated approximately every
60 seconds.
NOTE No EDV or RVEF value will be displayed until sufficient time-averaged data is
available.
In some situations where patient conditions create large changes in pulmonary artery blood temperature
over several minutes, the monitor may take longer than 9 minutes to obtain an initial EDV or RVEF
measurement. In these cases, the following alert message will appear 9 minutes after monitoring has
commenced:
Alert: EDV – Signal Adapting — Continuing
The monitor will continue to function and no user action is required. When continuous EDV and RVEF
measurements are obtained, the alert message will be removed and the current values will be displayed and
plotted.
NOTE CO values may still be available even when EDV and RVEF are not.
9.4.4 Active EDV Monitoring
When EDV monitoring is in progress, updating of the continuous EDV and RVEF measurement may be
delayed by unstable pulmonary artery blood temperature. If the values are not updated for 8 minutes, the
following message will appear:
Alert: EDV – Signal Adapting — Continuing
In cases when the average heart rate goes out of range (i.e., less than 30 bpm or greater than 200 bpm) or
when no heart rate is detected, the following message will appear:
Alert: EDV – Heart Rate Signal Loss
Continuous EDV and RVEF monitoring values will no longer be displayed. This condition could result from
physiologic changes in the patient’s status or the loss of the ECG slave signal. Check the ECG interface cable
connections and reconnect if necessary. After verifying patient status and cable connections, EDV and
RVEF monitoring will automatically be resumed.
Status = Released Printed Date: 2018-01-16 Released Date: 2017-09-14