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70-02053-31 A
Powerheart® AED G3 Elite 9790A and 9790E
Introduction
Non-committed shock
After the AED advises a shock, it continues to monitor the patient
ECG rhythm. If the patient’s rhythm changes to a non-shockable
rhythm before the actual shock is delivered, the AED will advise
that the rhythm has changed and issue the prompt “RHYTHM
CHANGED. SHOCK CANCELLED.” The AED will override the charge.
Synchronized shock
The AED is designed to automatically attempt to synchronize
shock delivery on the R-wave if one is present. If delivery cannot
be synchronized within one second, a non-synchronized shock
will be delivered.
Pacemaker pulse detection
The AED contains pacemaker pulse detection circuitry to detect
pulses from an implanted pacemaker.
SVT discriminators
The AED is supplied with the SVT Discriminator enabled and
with the default setting “NO THERAPY FOR SVT”. With the factory
default setting of “NO THERAPY FOR SVT”, the AED will not shock
an SVT rhythm.
SVT Discriminators are sophisticated filters that analyze the
morphology of the ECG waveforms and distinguish VF/VT from
SVT and Normal Sinus Rhythms (NSR). The SVT Discriminator will
only be applied to rhythms that fall between the Detection Rate
and the SVT Rate. The factory default setting for this feature is
“NO THERAPY FOR SVT”, however the Medical Director can enable
this feature using MDLink® on the Powerheart AED.
SVT rate
All rhythms with rates between the Detection Rate and SVT Rate
will be screened through a number of SVT Discriminators to classify
them into VF/VT or SVT. Rhythms classified as SVT between the
two set rates are not shockable. All SVT rhythms above the rates
will be classified as shockable. The SVT Rate must be greater than
the Detection Rate and is selectable between 160 to 300 bpm or,
“NO THERAPY FOR SVT” can be selected via MDLink Software by
the Medical Director.
