A3 System Of Rhythm Detection - Primedic HeartSave AED Operating Manual

Operating Manual
A3
20439 / 03.04 / 03 / engl.
System of Rhythm Detection
The rhythm detection system of HeartSave analyses the ECG of the patient and in-
forms you if HeartSave has detected a shockable rhythm and vice versa.
This system enables a person not trained in the analysis of ECG rhythms to use defi-
brillation measures for victims of ventricular fibrillation, pulseless ventricular tachycar-
dia.
The rhythm detection system of HeartSave:
Detects the electrode contact
Analyses the ECG automatically
Guides the operator during the defibrillation shock therapy
The transthoracic impendence of the patient is measured by the defibrillation elec-
trodes. If the base line impedance is higher than the maximum limiting value, Heart-
Save determines if the electrodes do not have adequate contact with the patient or
have not been connected to HeartSave properly. The ECG analysis and the delivery of
defibrillation shocks are therefore stopped. The voice prompt instructs the user to
'Check electrodes', if the contact of electrodes is not sufficient.
Automatic Interpretation of the ECG
The rhythm detection system of HeartSave was so designed that a defibrillation shock
is recommended if the system was connected to a patient who is unconscious, not
breathing, does not have a pulse and the system detects:
Ventricular fibrillation – if the peak to peak amplitude is higher than the asystole
threshold value (0.2 mV nominal)
Ventricular tachycardia
For all other ECG rhythms that do not meet these criteria, including asystole and
normal sinus rhythms, the rhythm detection system of HeartSave does not recom-
mend defibrillation.
ECG analysis is carried out on a sample ECG of at least seven seconds.
HeartSave AED / AED-M
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