Ibhre Exam, Real Exam Newest 2025 Actual Exam Complete Questions And Correct Answers (Verified Answers) ||Complete A+ Guide

Ibhre Exam, Real Exam Newest 2025 Actual Exam Complete

Questions And Correct Answers (Verified Answers) ||Complete

A+ Guide




1. What current ICD capacitor technologies provide the highest energy density
m m m m m m m m m




and does not require reformation?
m m m m m




…Ans>> Tantalum Electrolytic
m m




2. 1.67 Hz would equal how many bpm?
m m m m m m




…Ans>> 100 bpm 1 bpm = 0.0166667 Hz
mm m m m m m m




3. Which pace/sense lead designs would one expect the highest current den-
m m m m m m m m m m




m sity w/ a bipolar impedance reading of 1100 ohms?
m m m m m m m m




…Ans>> Brady lead w/ anode of 4.2 mm2 and cathode 5.2 mm2
mm m m m m m m m m m m




1 m/ m
13

,4. What is the voltage measurement of a pacing system w/ impedance of 500
m m m m m m m m m m m m




m ohms, current of 5.0 milliamp and pulse width of 0.4 ms and rate of 60 bpm?
m m m m m m m m m m m m m m m




…Ans>> V m




= 2.5 V
m m




V=I x R m m




= 5.0 milliamps x 500 ohms
m m m m m




= 2,500 millivolts
m m




=2,500/1000


5. What condition is shown to have an increase stimulation threshold, wide
m m m m m m m m m m




m QRS, latency, or under sensing?
m m m m




…Ans>> Hyperkalemia (high potassium)
mm m m




6. What is the estimated battery longevity of a pacemaker with 1.0 amp-
m m m m m m m m m m m




hour battery and 20 microamp drain ?
m m m m m m




…Ans>> Longevity = 114 x (amp-hours/microamp drain)
mm m m m m m




= 114 x (1.0/20)
m m m




= 5.7 years
m m




7. Which sensing related parameter represents the maximal rate of change of
m m m m m m m m m m




m the electrical potential between the sensing electrode and is the first derivative
m m m m m m m m m m m




2 m/ m
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,of the electrogram?
m m m




…Ans>> Slew rate mm m




8. The isovolumetric time from electrical depolarization of the heart to
m m m m m m m m m




me- chanical systole describes what term?
m m m m m m




…Ans>> Pre-ejection interval
mm m




9. What test is typically performed during exercise with HR around 105-115
m m m m m m m m m m




and was shown to have a negative predictive value in MADIT II and SCD-
m m m m m m m m m m m m m m




HeFT?
…Ans>> - Micro volt t-wave alternans
mm m m m m




10. Which battery chemistry is now incorporated into pacemakers?
m m m m m m m




…Ans>> Lithium silver vanadium & lithium carbon mono fluoride
mm m m m m m m m




11. What test is performed over 10-20 beats following a PVC and whose
m m m m m m m m m m m




m absence is a predictor of cardiac mortality following an MI?
m m m m m m m m m




…Ans>> Micro volt t-wave alternans
m m m m




12. Fluoroquinolones, a new gen antibiotic is known for which cardiac effect?-
m m m m m m m m m m




…Ans>> Prolonging QT mm m




3 m/ m
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, 13. What would decrease stim thresholds and current drain?
m m m m m m m




…Ans>> Reducing electrode surface area
mm m m m




Ex: from 12mm to 8mm
m m m m




4 m/ m
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