3
Table 1. Programmed Parameters for PMs During Power-On
Reset Mode
Manufacturer
Pacing
mode
Pacing
output
Pacing
polarity Sensitivity
Magnet
1
response
BIOTRONIK VVI 70
bpm
4.8 V @
1.0 ms
Unipolar 2.5 mV Yes
Boston
Scientific
2
VVI 65
bpm
5.0 V @1.0
ms
Bipolar 1.5 mV No
Medtronic VVI 65
bpm
5.0 V @
0.4 ms
Bipolar 2.8 mV Yes
St. Jude Medical VVI 67.5
bpm
4.0 V @
0.6 ms
3
Unipolar 2.0 mV No
ELA-Sorin VVI 70
bpm
5.0 V @
0.5 ms
Unipolar 2.2 mV No
1
Magnet = device will/will not pace asynchronously in response to a magnet during safety
mode/reset mode.
2
Boston Scientific CRT-P devices differ in pacing output (5 V @ 0.5 ms) and pacing polarity
(right ventricle lead is unipolar and le ventricle lead paces from le ventricle to pulse
generator).
3
St. Jude Medical Accent/Anthem and Frontier II models deliver 5 V @ 0.6 ms.
Magnet response varies by manufacturer.
Device Parameters
Table 2. Programmed Parameters for ICDs During Power-On
Reset Mode
Manufacturer
Rate
cutoff
Detection
criteria Sensitivity Energy
Pacing
mode
Pacing
output
BIOTRONIK 150 bpm 8/12 0.8 mV 40 J × 8 VVI 70
bpm
7.5 V @
1.5 ms
1
Boston
Scientific
165 bpm 8/10 0.25 mV 41 J × 5 VVI 72.5
bpm
5.0 V @
1.0 ms
Medtronic 188 bpm 18/24 0.3 mV 35 J × 6 VVI 65
bpm
6.0 V @
1.5 ms
St. Jude
Medical
2
146 bpm 12 0.3 mV 36 J × 6
3
VVI 60
bpm
5.0 V @
0.5 ms
ELA-Sorin 190 bpm 6/8 0.4 mV 42 J × 4
4
VVI 60
bpm
5.0 V @
0.35 ms
All devices will respond to magnet application by temporarily disabling tachyarrhythmia
detection. Pacing polarity for all devices is bipolar with the exception of Boston Scientific,
which paces in a unipolar configuration. Energ y values listed for Medtronic and St. Jude
Medical represent energ y delivered. e remaining represent energ y charged.
1
In CRT devices, le ventricle lead output is 4.8 V @ 0.5 ms.
2
e St. Jude Medical Current and Promote family of devices revert to an autosense sensitivity
setting, pace at VVI 67.5 beats per minute (bpm) with pacing outputs of 5.0 V @ 0.6 ms.
3
e St. Jude Medical Epic and Epic II family of devices delivers 30 J × 6.
4
ELA-Sorin LivaNova Ovatio family of devices: 34 J × 4.
