User's Manual

US-ENGLISH – 45
defibrillator and a warning will indicate that a short circuit (shock
impedance < 20 ohms) was detected during the last shock.
16. MAIN FUNCTIONS
16.1. AUTOMATIC LEAD MEASUREMENTS
Automatic pacing lead impedance measurement: A lead impedance
measurement is automatically performed on atrial and ventricular leads
every 6 hours. The daily mean impedance is stored for each chamber.
Automatic coil impedance measurement: A coil impedance
measurement is automatically performed on RV and SVC coils once a
week. The result is stored in the device memory.
16.2. ATRIAL TACHYARRHYTHMIA MANAGEMENT
Mode Switch: This function is designed to limit the acceleration and
variation of ventricular rate in the presence of atrial arrhythmia.
16.3. VENTRICULAR TACHYARRHYTHMIA
MANAGEMENT
Ventricular tachyarrhythmia prevention: Set of algorithms that can be
used to avoid the circumstances of ventricular tachyarrhythmia onset.
Searching for a long cycle (P And R based Arrhythmia Detection+:
PARAD+): Additional arrhythmia classification criterion to improve
identification of atrial fibrillation and avoid inappropriate shocks.
Fast VT treatment: Applies detection criteria on fast ventricular
tachycardia, that are different from those of the VT zone, as well as
different therapies. The fast VT zone is included in the VF zone: its
lower limit is determined by the programmed value for the VF zone
and its upper limit by the programmed value for the fast VT zone.