Mintek LV Manuale Utente

70  Stratos LV/LV-T Technical Manual   

During biventricular pacing in the Stratos CRT-Ps, the right 
ventricle is paced first.  Starting from the initially paced chamber 
(RV), the intraventricular conduction time (VV delay) is 
permanently set to 5 ms after a right ventricular sensed or paced 
event. 

While ventricular pacing and sensing events are 
synchronized, synchronization does not occur during 
ventricular extrasystoles. 

 

The following table presents in detail the effects of the standard 
pacing modes with the biventricular modes: 

DDD 

VDD 

DDI 

VDI 

VVI 

DDD 

VDD 

DDI 

VDI 

RVs 

inhibits 

RVp  X X X X X X X X X 

RVs 

triggers 

LVp  X X X X X X X X X 

 

The availability of parameters and parameter values is 
determined by the software used for programming / interrogating 
the CRT-Ps. 

The basic rate is the pacing rate in the absence of an intrinsic 
rhythm and is programmable up to 180 ppm.  The interval for the 
basic rate is the time between two pacing pulses and is thus 
called the basic interval. 

The basic rate is programmable: 

32… (1)…60… (1)…88… (2)…122… (3)…140… (5)…180 ppm. 

In atrial-controlled modes, the basic interval is started by an 
atrial event.  In atrial-controlled, dual-chamber modes, the basic 
interval is also started by a ventricular extrasystole.