1 for specific request mail
IBHRE Prep Exam Questions and Correct Answers |
Latest Update
Voltage is?
Ans: The electromotive force pushing on electrons
If the PM output voltage is 5v and the measured lead resistance is 330
ohms, then the current that flows out of the pacemaker into the heart is?
Ans: 15.15
Assignment Expert
I=V/R=5V/.33 k ohm
If a unipolar lead wire has an insulation break one would expect the
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resistance to?
Ans: decrease
2026
for a wire fracture the resistance?
Ans: increases
©
if the output vlotage of the pacemaker is programmed from 5 volts to 2.5
volts, the energy delivered to the heart is?
Ans: quartered
Which of the following affect the longevity of the PM?
Ans: output voltage, resistance of lead and amount % pacing
Which Pt's PM will last longer?
Ans: #1: AMP=5V, L.R.=90, resistance 500ohms, PW=.5ms, 100%pacing
#2: AMP=5V, L.R.=60, resistance 500ohms, PW=.5ms, 100%pacing
#3: AMP=2.5V, L.R.=60, resistance 330ohms, PW=.5ms, 100% pacing
, 2 for specific request mail
(#4: AMP=2.5v, L.R.=60, resistance 500ohms, PW=.5ms, 50%pacing)
The strength duration curve is dependent on the?
Ans: Cell's membrane capacitance, intracellular and extracellular
resistance and threshold voltage.
A patient on flecainide should?
Ans: Have their threshold checked
The acute threshold peaking is due to?
Assignment Expert
Ans: Trauma and inflammation
An advantage of bipolar leads is?
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Ans: They are less susceptible to EMI
The two parameters that are important for ventricular sensing and should
2026
be measured are?
Ans: R-wave amplitude and slew rate
©
If an external PM is set to a sensitivity setting of 5mV and some R-waves
go unsensed, then you should do the following
Ans: Increase sensing by lowering sensitivity to 2.5mV.
Typical acceptable R-wave amplitude values for an acute ventricular lead
is?
Ans: 7-15mV
Typical acceptable P wave amplitude values for an acute atrial lead is?
Ans: greater than 2mV
The slew rate is?
Ans: Change in voltage divided by time or the slope of the EGM
IBHRE Prep Exam Questions and Correct Answers |
Latest Update
Voltage is?
Ans: The electromotive force pushing on electrons
If the PM output voltage is 5v and the measured lead resistance is 330
ohms, then the current that flows out of the pacemaker into the heart is?
Ans: 15.15
Assignment Expert
I=V/R=5V/.33 k ohm
If a unipolar lead wire has an insulation break one would expect the
Guru01 - Stuvia
resistance to?
Ans: decrease
2026
for a wire fracture the resistance?
Ans: increases
©
if the output vlotage of the pacemaker is programmed from 5 volts to 2.5
volts, the energy delivered to the heart is?
Ans: quartered
Which of the following affect the longevity of the PM?
Ans: output voltage, resistance of lead and amount % pacing
Which Pt's PM will last longer?
Ans: #1: AMP=5V, L.R.=90, resistance 500ohms, PW=.5ms, 100%pacing
#2: AMP=5V, L.R.=60, resistance 500ohms, PW=.5ms, 100%pacing
#3: AMP=2.5V, L.R.=60, resistance 330ohms, PW=.5ms, 100% pacing
, 2 for specific request mail
(#4: AMP=2.5v, L.R.=60, resistance 500ohms, PW=.5ms, 50%pacing)
The strength duration curve is dependent on the?
Ans: Cell's membrane capacitance, intracellular and extracellular
resistance and threshold voltage.
A patient on flecainide should?
Ans: Have their threshold checked
The acute threshold peaking is due to?
Assignment Expert
Ans: Trauma and inflammation
An advantage of bipolar leads is?
Guru01 - Stuvia
Ans: They are less susceptible to EMI
The two parameters that are important for ventricular sensing and should
2026
be measured are?
Ans: R-wave amplitude and slew rate
©
If an external PM is set to a sensitivity setting of 5mV and some R-waves
go unsensed, then you should do the following
Ans: Increase sensing by lowering sensitivity to 2.5mV.
Typical acceptable R-wave amplitude values for an acute ventricular lead
is?
Ans: 7-15mV
Typical acceptable P wave amplitude values for an acute atrial lead is?
Ans: greater than 2mV
The slew rate is?
Ans: Change in voltage divided by time or the slope of the EGM
