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140 Stratos LV/LV-T Technical Manual
Table 28: Lead Configuration
Configuration Description
bipolar RV tip Æ RV ring
Sensing
*
RV
unipolar RV tip Æ Case
bipolar RV tip Æ RV ring RV
unipolar RV tip Æ Case
bipolar LV tip Æ LV ring
Pacing
†
LV
unipolar LV tip Æ Case
8.2 Lead Connection
Stratos CRT-Ps have been designed and are recommended for
use with bipolar or unipolar leads having an IS-1 connector.
CAUTION
Unipolar/Bipolar – If the pacing or sensing function is to be
programmed to bipolar in the atrial channel, it must be
verified that bipolar leads have been implanted in that
chamber. If the atrial lead is unipolar, unipolar sensing and
pacing functions must be programmed in that chamber.
Failure to program the appropriate lead configuration could
result in patient experiencing entrance and/or exit block.
In addition, if the atrial lead polarity setting within the Patient
Data Memory has been set to bipolar, the polarity of the
corresponding implanted lead must be confirmed to be
bipolar.
Overview of the Lead Polarities
If a bipolar lead is connected to the CRT-P, unipolar or bipolar
configurations can be programmed for pacing and sensing. As
compared to bipolar pacing, the unipolar pacing pulse has the
advantage of being clearly identifiable on the ECG. Unipolar
pacing occasionally results in muscle stimulation in the device
pocket or diaphragm.
*
RV only
†
RV only and BiV, BiV = RV + LV with programmed VV-Delay