Function of pacemaker circuitry that allows the pacemaker output pulse to be
dissipated quickly maximizing both output and sensing capabilities - ANSWER -
Charge dump
Av sequentially paced pts with frequent ventricular ectopy should have what
programmed to decrease chance of competition - ANSWER - Short blanking period
Formula for strength duration curve resulting in parabolic shape - ANSWER - I x V x
T
The most commonly used battery chemistry in ICDs - ANSWER - Lithium silver
vanadium oxide
What is the purpose of a capacitor in an electrical circuit - ANSWER - Store electrical
charge
All of the following have been used as ERI magnet responses except:
- abrupt increase in rate
- abrupt decrease in rate
- gradual increase in rate
- gradual decrease in rate - ANSWER - Abrupt decrease in rate
Which of the following has not been used as an indicator of battery depletion?
- pulse width stretching
- mode change
- programmed amplitude reversion
- telemetered battery impedance - ANSWER - Programmed amplitude reversion
The electrical circuit that coverts a signal with both positive and negative
components into a signal with only one component - ANSWER - Rectifier
Threshold 1.0@0.4. Output 2.0@0.8. Output = how many times the threshold -
ANSWER - 8x
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