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IBHRE Practice Exam 1 Questions And Answers 100% Solved.
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IBHRE Practice Exam 1 Questions And Answers 100% Solved.
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IBHREIBHRE Practice Exam 1 Questions
And Answers 100% Solved.
Wenkebach window - ✔✔✔ - Max tracing interval(in ms) - TARP(in ms)
2:1 Block Point - ✔✔✔ - 60,000/TARP
Basic unit of capacitance - ✔✔✔ - Farad
Function of pacemaker circuitry that allows the pacemaker output pulse to be dissipated quickly
maximizing both output and sensing capabilities - ✔✔✔ - Charge dump
Av sequentially paced pts with frequent ventricular ectopy should have what programmed to
decrease chance of competition - ✔✔✔ - Short blanking period
Low threshold electrode materials include - ✔✔✔ - Iridium oxide, platinized platinum, titanium
nitrate
Formula for strength duration curve resulting in parabolic shape - ✔✔✔ - I x V x T
The most commonly used battery chemistry in ICDs - ✔✔✔ - Lithium silver vanadium oxide
What is the purpose of a capacitor in an electrical circuit - ✔✔✔ - Store electrical charge
All of the following have been used as ERI magnet responses except:
IBHRE Page 1
, IBHRE
- abrupt increase in rate
- abrupt decrease in rate
- gradual increase in rate
- gradual decrease in rate - ✔✔✔ - 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 - ✔✔✔ - Programmed amplitude reversion
The electrical circuit that coverts a signal with both positive and negative components into a
signal with only one component - ✔✔✔ - Rectifier
Threshold 1.0@0.4. Output 2.0@0.8. Output = how many times the threshold - ✔✔✔ - 8x
Lead insulation failure characteristics commonly include - ✔✔✔ - Extracardiac stimulation
What is the voltage measurement of a pacing system with a resistance of 800 ohms, current of
4.5 mA and pacing rate of 60 ppm? - ✔✔✔ - 3.6 V
Which of the following conditions has been shown to cause: increase in stimulation threshold,
wide QRS, latency, or undersensing? - ✔✔✔ - Hyperkalemia
IBHRE Page 2
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