Mintek LV-T Manual Do Utilizador

Stratos LV/LV-T Technical Manual  145 

Service times for the Stratos CRT-Ps vary based on several 
factors, including battery properties, storage time, lead system 
impedance, programmed parameters, amount of pacing and 
sensing required, and circuit operating characteristics.  Service 
time is the time from beginning of service (BOS) to the end of 
service (EOS).  To assist the physician in determining the 
optimum time for pulse generator replacement, an elective 
replacement indicator is provided that is activated when the 
battery cell capacity drops to a predetermined level.  The 
following table defines the different service cycles (at standard 
settings, 37°C, and with a lead impedance of 500 ohms).  The 
beginning of the replacement cycle is displayed on the 
programmer after pulse generator interrogation and appears on 
the printout. 

BOS Beginning 

of 

Service 

Normal service cycle; 
battery in good condition 

ERI Elective 

Replacement 

Indication 

Identifies the time of 
elective replacement 
indication.  The rate 
occurring at ERI depends 
upon the programmed 
mode and magnet 
application. 

EOS End 

of 

Service 

Identifies the end of the 
elective replacement 
indication period. 

 

The Stratos CRT-Ps indicate the need for replacement by a 
defined decrease in the programmed pacing rate without a 
magnet applied.  The rate change is dependent on the 
programmed pacing mode.