IBHRE EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

BHRE EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS A function of pacemaker circuitry that allows the pacemaker output pulse to be dissipated quickly maximizing both the output and sensing capabilities. a) circuit resistors b) charge dump c) pulse neutralizer d) current consumption - Answer -B. Charge Dump AV sequentially paced patients with frequent ventricular ectopy should have the following pacemaker parameters programmed to decrease the chance of competition: a) short blanking period b) slower base rate c) increased ventricular refractory periodd) none of the above - Answer -A. Short Blanking Period Low threshold electrode materials include each of the following EXCEPT: a) iridium oxide b) elgiloy c) platinized platinum d) titanium nitride - Answer -B. Elgiloy The strength duration curve resulting in a parabolic shape is described by which of the following formulas? a) I x t b) I x V x t c) I x R d) all of the above - Answer -B. I x V x t The ventriculoatrial conduction time of a pacemaker patient with a typical endless-loop-tachycardia may be calculated by which equation? a) (upper rate limit interval) - ( AV delay + PVARP) b) (upper rate limit interval) - ( AV delay + PVARP + Wenckebach interval c) (lower rate limit interval) - ( upper rate limit interval)d) none of the above - Answer -D. None of the above Which of the following programmings would not prevent crosstalk? a) a prolonged blanking period b) "safety pacing" c) low atrial output d) less sensitive ventricular sensitivity - Answer -B. "Safety Pacing" The most commonly used battery chemistry in ICDs is: a) lithium thionyl chloride b) lithium manganese dioxide c) lithium silver vanadium oxide d) lithium manganese dioxide - Answer -C. Lithium Silver Vanadium Oxide The purpose of a capacitor in an electrical circuit is to: a) convert AC to DC current b) store electrical charge c) rapidly switch battery voltage on or offd) limit current flow to a single direction - Answer -B. Store Electrical Charge A programming mode that would NOT be utilized to manage intermittent atrial fibrillation in a patient with a DDD pacemaker is:. a) DDI b) DVI c) VDD d) VVI - Answer -C. VDD Variations in stimulus morphology on the surface ECG of an analog recorder may be caused by: a) a dislodged electrode b) an electrical short c) changes in patient position d) all of the above - Answer -D. All of the above All of the following have been used as ERI magnet responses except: a) abrupt increase in rate b) abrupt decrease in rate c) gradual increase in rate