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IBHRE Prep Exam questions and answers graded A+ 2025/2026
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IBHRE Prep Exam questions and answers graded A+ 2025/2026
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IBHRE Prep ExamVoltage is? - ANSThe electromotive pressure pushing on electrons
If the PM output voltage is 5v and the measured lead resistance is 330 ohms, then the
present day that flows out of the pacemaker into the heart is? - ANS15.15
I=V/R=5V/.33 ok ohm
If a unipolar lead twine has an insulation smash one would anticipate the resistance to? -
ANSdecrease
for a cord fracture the resistance? - ANSincreases
if the output vlotage of the pacemaker is programmed from five volts to two.5 volts, the
power brought to the coronary heart is? - ANSquartered
Which of the subsequent have an effect on the durability of the PM? - ANSoutput voltage,
resistance of lead and amount % pacing
Which Pt's PM will final longer? - ANSno 1: AMP=5V, L.R.=ninety, resistance 500ohms,
PW=.5ms, a hundred percentpacing
#2: AMP=5V, L.R.=60, resistance 500ohms, PW=.5ms, a hundred percentpacing
#3: AMP=2.5V, L.R.=60, resistance 330ohms, PW=.5ms, 100% pacing
(#4: AMP=2.5v, L.R.=60, resistance 500ohms, PW=.5ms, 50percentpacing)
The strength duration curve is dependent on the? - ANSCell's membrane capacitance,
intracellular and extracellular resistance and threshold voltage.
A affected person on flecainide must? - ANSHave their threshold checked
The acute threshold peaking is because of? - ANSTrauma and inflammation
An benefit of bipolar leads is? - ANSThey are much less vulnerable to EMI
The two parameters that are important for ventricular sensing and must be measured are? -
ANSR-wave amplitude and slew price
If an external PM is about to a sensitivity placing of 5mV and a few R-waves pass unsensed,
you then should do the following - ANSIncrease sensing with the aid of lowering sensitivity to
two.5mV.
Typical acceptable R-wave amplitude values for an acute ventricular lead is? - ANS7-15mV
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