Defibtech DDU-100 Series User Manual

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Analysis related voice prompts:

“Analyzing heart rhythm” – This indicates that the DDU-100 AED is actively analyzing the
patient’s ECG signal. The AED will continue analyzing until it has determined whether a rhythm is
shockable or non-shockable or analyzing is interrupted for some reason. The “analyzing” LED will flash
green during this period.

“Do not touch the patient”

– This indicates that the DDU-100 AED is trying to analyze the

patient’s heart rhythm and that the operator should not touch the patient. This message will be spoken
at the beginning of the analysis period and also if motion or interference has been detected. The “do
not touch patient” LED will flash red during this message.

“A

nalyzing interrupted” – This indicates that the DDU-100 AED has determined that accurate

ECG analysis is not possible and has ceased analyzing. The operator is prompted to resolve the
problem – see “Follow DDU-100 AED Prompts” section. Once the problem is resolved, the unit
will enter analysis mode again. The “analyzing” LED will not be illuminated during this message.

“No shock advised” – This indicates that the DDU-100 AED has determined that a shock is
not required.

The unit will not charge and the SHOCK button will not be enabled. The user will be

prompted to begin CPR, if needed, for a period of two minutes.

“Shock advised” – This indicates that the DDU-100 AED has determined that a shock is
recommended and the unit will begin charging in anticipation of a defibrillation shock. Analysis will
continue and the “analyzing” LED will continue to flash green.

4.6 Delivering the Shock

If the DDU-100 AED ECG analysis algorithm has determined that a shock is required, the unit
will automatically charge in preparation for shock delivery. While the AED charges, the unit will
continue to analyze the patient’s heart rhythm.

If the unit detects that the heart rhythm has

changed to one that does not require a shock, the unit will abort the charging process and will
prompt the user to begin CPR, if needed, for a period of two minutes.

Also while charging, the

AED will continue to monitor the pad connections and will abort charging if it detects any pad
problems. It will also continue to monitor for excessive motion or interference and will abort
charging if those conditions are detected. The user can abort at any time by pushing the ON/OFF
button to turn the unit off.