BIOTRONIK Evia HF - Position Indicator; Pacing When Exposed to Interference

Chapter 7 Other Functions/Features
Evia HF / HF-T Technical Manual
PAGE 89
Symptom, etiology and ECG indication are specied using the European PASSPORT code system. The
PASSPORT code is an identication system of two character codes that represent specic conditions. A
listing of the codes available with denitions is displayed on the screen of the programmer when patient
data is selected. When the patient data screen is entered symptom, etiology, or ECG indication may be
entered, and can be accessed following interrogation to check code denition.
When the patient data screen is printed, the date of last follow-up is automatically given on the print-out.
7.5 Position Indicator
The position indicator facilitates positioning of the programmer head. The programmer optically and
acoustically indicates whether the programmer head is in communication with the pulse generator.
7.6 Pacing When Exposed to Interference
CAUTION
EMI – Computerized systems are subject to EMI or “noise”. In the
presence of such interference, telemetry communication may be
interrupted and prevent programming.
A sensed event occurring during the interference interval will continuously reset that interval for the
corresponding chamber without resetting the basic interval. Depending upon whether the interference
(electromagnetic interference, muscle potentials, etc.) is detected by the atrial and/or ventricular
channel, atrial and/or ventricular asynchronous pacing at the programmed timing intervals will result for
the duration of the interference. The interference interval has a duration of 51 ms.
Depending on the programmed pacing mode and the channel in which electromagnetic interference
(EMI) occurs, Table 20 details the resulting pacing modes for the duration of exposure to EMI.
MODE EMI
6
(A) EMI
6
(V) EMI
6
(A+V)
DDD(R)- ADI(R)
DDD-CLS
VVI-CLS
DDD(R)
DDI(R)
DVI(R)
VDD(R)
VVI(R)
AAI(R)
DDT
VDI
VVT
AAT
DVD(R)
DVDR
---
DVD(R)
DVI(R)
---
VVI(R)
---
AOO(R)
VVT
VVT
---
AOO
DAD(R)
DADR
VOOR
DAD(R)
DAI(R)
DOO(R)
VAT(R)
VOO(R)
---
VAT
VOO
VOO
---
DOO(R)
DOOR
---
DOO(R)
DOO(R)
---
VOO(R)
---
---
VOO
VOO
---
---
Table 20: Response to EMI
6 EMI = Electromagnetic Interference