Mintek LV-T Manual Do Utilizador

Stratos LV/LV-T Technical Manual  83 

Pulse Amplitude – Programming of pulse amplitudes, higher 
than 4.8 V, in combination with long pulse widths and/or high 
pacing rates can lead to premature activation of the 
replacement indicator.  If a pulse amplitude of 7.2 V or higher 
is programmed and high pacing rates are reached, output 
amplitudes may differ from programmed values. 
Programming Modifications – Extreme programming 
changes should only be made after careful clinical 
assessment.  Clinical judgment should be used when 
programming permanent pacing rates below 40 ppm or above 
100 ppm. 

 

The parameter “sensitivity” is used to set the pulse generator’s 
threshold for detecting intracardiac signals.  The lower the 
programmed sensitivity values the higher the device’s sensitivity. 

If intracardiac signals are of low amplitude, a change to a higher 
sensitivity (lower value) may be indicated.  Conversely, if the 
sensing amplifier is responding to extraneous signals, such as 
artifacts or interference, a change to a lower sensitivity (higher 
value) may resolve the difficulty.  In dual chamber sensing 
modes, the sensitivity values for the atrial and ventricular 
channels are independently programmable. With Unipolar 
programming, the highest possible sensitivity setting is 1.0 mV. 

The programmed lead polarity determines whether the CRT-P 
senses or paces in a unipolar or bipolar configuration.  Lead 
polarity can be programmed separately for sensing and pacing 
in all three chambers.  

Atrial Sensitivity – In dual chamber systems, the atrial 
sensitivity of 0.1 

mV should only be programmed in 

conjunction with a bipolar lead configuration.