DFT Flashcards
(30 cards)
Whats the safety margin for DFT
10J
Two types of VF induction
Shock on T
High Frequency Burst
Which two trials spoke against DFT testing
Nordic - First shock efficacy same
SIMPLE - Similar arrhythmic deaths
What is a class IIa indication for DFT
Right sided implant
3 ways to manage DFT
Change vectors
Implant equipment
Increase energy
In biotronik is the Can ANODE or CATHODE
Anode
Time based waveforms are more efficient than voltage based waveforms - TRUE or FALSE
True - hence biphasic 2 (2ms chop off in the end)
During DFT testing - what is the detection?
Same as programmed detection 18/24 normal
Deliver emergency shock is what type of shock?
Committed - asynchronous
Under what circumstance is ATP OPT cleared and reset
Shock delivery or reprogramming
Does ATP OPT apply to the VF zone?
No - Only VT zones
What is the minimum ATP interval available
200ms
What did PAINFREE show?
ATP terminates 3 out of 4 FVT painlessly
What is the criterion for ATP ONESHOT
In the VF zone
Stability of +-12 must be met - not programmable
Does ONESHOT occur pre or during charging
Pre
Reconfirmation is how many of how many
3 of 4
What does surge guard do?
Cuts off accelerating therapy mid-episode
Does surge guard temp or perm program off pro arrhythmic therapy
Temporarily.
It’ll be back on for the next episode
What did surge guard use to be called?
Therapy ratchet
How much % of charge is delivered during both phase 1 and phase 2 of shock
Phase 1 = 60%
Phase 2 = 50% of whats left
Whats the cut off voltage % of a biphasic shock
20%
Does the ICD and SVC Coil share the same polarity?
Yes - both Anodal
When is the polarity reversed during alternating shock sequence?
Polarity is reversed after the first FULL shock
Is the shock following an abort committed or non committed?
Commited
