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Monitoring During Leads Off; Ecg Fallback; Relearning - Philips IntelliVue MX40 Instructions For Use Manual

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Monitoring during Leads Off

ECG Fallback and Extended monitoring states are supported for the MX40
when the primary and/or secondary leads are in a "Leads Off" INOP
condition. Both of these states are entered into after 10 seconds of "Leads
Off" in an attempt to maintain monitoring and arrhythmia analysis.

ECG Fallback

ECG Fallback occurs when the primary lead is in "Leads Off" for 10 seconds
and a secondary lead is available.
Multilead Analysis
If there is a "Leads Off" technical alarm in the primary lead for > 10 seconds,
the active secondary lead becomes the primary lead. The arrhythmia
algorithm switches the leads on the display, but relearn does not occur.
When the "Leads Off" condition is corrected, the leads are switched back to
their original state.
Single Lead Analysis
For single lead analysis, if there are two leads available, the secondary lead
is made the primary lead until the "Leads Off" condition is corrected. The
arrhythmia algorithm performs a relearn using the available lead.
Extended Monitoring
If both the primary and secondary leads are in a "Leads Off" condition, the
ECG source on the MX40 will switch to any available lead. Relearning will
occur in this condition.
Fallback for EASI
If one of the derived EASI leads is in a technical alarm condition, a flat line
is displayed. After 10 seconds, the directly acquired EASI AS, EA, or AI
lead, depending on which is available, is displayed. Arrhythmia relearn is
performed with transition to or from EASI Fallback monitoring using the
available lead(s).

Relearning

Whenever there is a "Leads Off" condition for more than 60 seconds, the
arrhythmia algorithm performs a Relearn using the available leads.
Monitoring during Leads Off
ECG and Arrhythmia Monitoring
6-25

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