Ibhre Exam Studyguide Newest Update (2025) Actual Exam Complete 400+ Questions And Correct Answers (Verified Answers) ||Complete A+ Guide

Ibhre Exam Studyguide Newest Update (2025) Actual Exam

Complete 400+ Questions And Correct Answers (Verified

Answers) ||Complete A+ Guide




1. A function of pacemaker circuitry that allows the pacemaker output pulse
m m m m m m m m m m




to be dissipated quickly maximizing both the output and sensing capabilities.
m m m m m m m m m m m




a) circuit resistorsm




b) charge dump m




c) pulse neutralizer
m




d) current consumption m




…Answer… B. Charge Dump m m m




2. AV sequentially paced patients with frequent ventricular ectopy should have
m m m m m m m m m




the following pacemaker parameters programmed to decrease the chance
m m m m m m m m m




of competition:
m m




a) short blanking period
m m




b) slower base rate m m




1 m/ m
163

,c) increased ventricular refractory period m m m




d) none of the abovem m m




…Answer… A. Short Blanking Period mm m m m




3. Low threshold electrode materials include each of the following EXCEPT:
m m m m m m m m m




a) iridium oxide m




b) elgiloy
c) platinized platinum m




d) titanium nitride m




…Answer… B. Elgiloy mm m




4. The strength duration curve resulting in a parabolic shape is described by
m m m m m m m m m m m




which of the following formulas?
m m m m m




a) I x t
m m




b) I x V x t
m m m m




c) I x R
m m




d) all of the above
m m m




…Answer… B. I x V x t mm m m m m m




5. The ventriculoatrial conduction time of a pacemaker patient with a typical
m m m m m m m m m m




endless-loop-tachycardia may be calculated by which equation?
m m m m m m m




a) (upper rate limit interval) - ( AV delay + PVARP)
m m m m m m m m m




b) (upper rate limit interval) - ( AV delay + PVARP + Wenckebach interval
m m m m m m m m m m m m




c) (lower rate limit interval) - ( upper rate limit interval)
m m m m m m m m m


2 m/ m
163

,d) none of the above
m m m




…Answer… D. None of the above
m m m m m




6. Which of the following programmings would not prevent crosstalk?
m m m m m m m m




a) a prolonged blanking period
m m m




b) "safety pacing"
m




3 m/ m
163

, c) low atrial output
m m




d) less sensitive ventricular sensitivity
m m m




…Answer… B. "Safety Pacing" mm m m




7. The most commonly used battery chemistry in ICDs is:
m m m m m m m m




a) lithium thionyl chloride m m




b) lithium manganese dioxidem m




c) lithium silver vanadium oxide
m m m




d) lithium manganese dioxidem m




…Answer… C. Lithium Silver Vanadium Oxide
mm m m m m




8. The purpose of a capacitor in an electrical circuit is to:
m m m m m m m m m m




a) convert AC to DC current m m m m




b) store electrical charge
m m




c) rapidly switch battery voltage on or off
m m m m m m




d) limit current flow to a single direction
m m m m m m




…Answer… B. Store Electrical Charge
mm m m m




9. A programming mode that would NOT be utilized to manage intermittent
m m m m m m m m m m




m atrial fibrillation in a patient with a DDD pacemaker is:.
m m m m m m m m m




a) DDI
b) DVI
c) VDD

4 m/ m
163