Programming Flashcards
Why is SAV programmer longer than PAV?
Atrial depolarisation is often detected 20-60ms after the onset of P wave in surface ECG.
Whilst a paced atrial beat commences immediately with the pacing spike
Why is SAV programmer longer than PAV?
Atrial depolarisation is often detected 20-60ms after the onset of P wave in surface ECG.
Whilst a paced atrial beat commences immediately with the pacing spike
What is AVD and its purpose?
Mimics PR interval and maintains AV synchrony
Describe what could happen if the AVD was programmed too long.
AV dysynchrony
Increase TARP causing a longer 2:1 URB rate
Describe what could happen if the AVD was programmed too short.
Decreased ventricular filling time
What is the purpose of the ventricular blanking period?
Prevents crosstalk or FFRWOS
What is the purpose of the PVARP?
Prevents tracking of retrograde p waves and farfield sensing
A PVARP programmed inappropriately short can cause what?
Tracking of retrograde P waves causing PMT
A long PVARP contributes to what pacemaker behaviour?
URB
Reduces 2:1 block rate
PVAB is used for?
Prevents FFRWOS
