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Stratos LV/LV-T Technical Manual 69
2.1.11 OFF (ODO)
In this mode, pacing and sensing functions are off. The OFF
mode is used to determine and evaluate the morphology of an
intrinsic rhythm. With external pulse control, the OFF mode is
used for electrophysiological studies. The OFF mode can be
programmed temporarily.
CAUTION
OFF Mode – The OFF mode can be transmitted as a
temporary program only to permit evaluation of the patient’s
spontaneous rhythm. (see Section 2.1.11).
2.2 Biventricular Synchronization of the
Stratos CRT-Ps
For the Stratos CRT-Ps, there are 2 possible settings for the BiV
Sync parameter: OFF and BiV RV RV-T.
OFF - If the BiV sync parameter is set to OFF, the CRT-P
ignores the left-ventricular channel and functions like a
conventional dual-chamber pacemaker. Consequently, pacing is
not delivered into the left ventricle.
BiV RV RV-T - When set to "BiV RV RV-T" the device provides
biventricular pacing with sensing in the right ventricle and
triggering of a right ventricular sensing event in the left ventricle.
The biventricular synch settings can be activated together with
the DDD(R), DDI(R), VDD(R), and VVI(R) pacing modes.
CAUTION
Sensing – The Stratos CRT-Ps do not sense in the left
ventricle.
AV Conduction – In patients with intact AV conduction, the
intrinsic atrial tachycardia is conducted to the ventricle 1:1.
With the resynchronization mode activated, spontaneous rate
of the right ventricle mode is synchronized for a rate up to
200 ppm in the left ventricle. For this reason, biventricular
pacing mode should be turned OFF in such cases.