BIOTRONIK Evia DR, Техническое руководство

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96 Evia Technical Manual
7.13.2 Ventricular Capture Control
Programming
VCC is programmable to ON, Active Threshold Monitoring (ATM)
modes, and OFF.
Table 21
provides details about the VCC
programmability.
Table 21: VCC Programmability
Programmable Modes for VCC
VCC Components ON ATM
Pulse width
programmability less than or equal to 0.4 ms
SA and Capture
Threshold searches Yes Yes
Set output to
thr safety
margin Yes No
Capture Verification
(CV) Yes No
When programmed to ON, the device will continuously monitor
the cardiac signal following the pacing pulse to verify that a
depolarization occurred as a result of the pulse. Upon detection
of non-capture, the device will issue a back-up pulse at a higher
output (pulse width increased to 1ms) within 130 ms. If loss-of-
capture (LOC) occurs, the device will initiate an SA/CV.
Additionally, the device will perform regular threshold searches
at the programmed time each day. After a successful threshold
search, the device will program the pulse amplitude to the
threshold plus the programmed Safety Margin. The device will
never set the amplitude lower than the fixed minimum VCC
Amplitude (Min Ampl.) of 0.7V.
N
OTE
:
After programming the Ventricular Capture Control feature to
ON or ATM, the device will perform a Signal Analysis and a
capture threshold search. This sequence can take up to
2 minutes.