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Shock Theory
DFT Testing
Lead Design
Device Configuration
Waveforms
100
a transient physical excitation.
What is a shock?
100
10J
What is the accepted safety margin during DFT testing?
100
Gore ePTFE
What do Boston Scientific use on shock coils to prevent tissue in-growth?
100
Triad Configuration
How can Teligen devices be programmed to improve shock vectors?
100
40 - 60%
What is the optimal tilt for a shock waveform?
200
Critical Mass Theory
What theory states shocks need only eliminate fibrillatory wavelets in a critical amount of myocardium to stop the arrhythmia ?
200
Defibrillation Threshold
What is a predictor of the probability of success, of future cardioversion attempts?
200
12mm
What is the pullback distance of an Endotak Reliance lead?
200
Cold Can
What is a shock vector that only utilises the coils called?
200
Impedance
What causes the shock duration to vary?
300
Vulnerable Window (Upper limit of Vulnerability)
What is the area called where shocks will likely CAUSE fibrillation rather than terminate it?
300
Flecainide
What drug increases the defibrillation threshold?
300
Increased Pullback
What is one disadvantage of a dedicated bipolar tachy lead?
300
EP Test Screen
Where is the only place you can alter the shock timing?
300
>10ms
At what shock duration may fibrillation be CAUSED rather than terminated?