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Stratos LV/LV-T Technical Manual 139

8. Lead Connection

8.1 Lead Configuration

The Stratos CRT-Ps allows programming of separate lead

polarities for pacing and sensing. Lead polarity can also be

programmed separately in both the atrial and ventricular

channels.

CAUTION

Lead Configuration – The polarity of the implanted lead

dictates what lead configuration can be programmed for the

CRT-P. Pacing will not occur with a unipolar lead if the lead

configuration of the respective channel is programmed to

bipolar (see Section 8).

Atrial Channel

In a unipolar lead configuration, the CRT-P pace and sense

between the tip electrode of the atrial lead (cathode) and the

housing (anode). In a bipolar lead configuration, the CRT-Ps

pace and sense between the tip and ring electrodes of the atrial

lead. Therefore, bipolar lead polarity should only be

programmed when a bipolar atrial lead is implanted.

Ventricular Channel

The Stratos CRT-Ps have a specially designed header that

allows sensing with only the RV channel while pacing in both the

right and left ventricles. Biventricular Therapy requires

programming of a bipolar or unipolar pacing configuration in the

ventricle as desired. Table 28

summarizes the sensing and

pacing configuration in the ventricle.

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Mintek Pacemaker LV-T Manuel d'utilisateur Page 147