IBHRE CCDS EXAM LATEST
What is the suggested type of antibiotics? - ANSWERS-Beta-Lactam antibiotics,
vancomycin reserved for those with penicillin allerigies
What lead insulation material best reduces ingrowth? - ANSWERS-.ePTFE
Which lead insulation material is most susceptible to metal ion oxidation (MIO)
and environmental stress cracking (ESC) - ANSWERS-Poly 80A
ESC and MIO - ANSWERS-Environmental Stress Cracking
Metal Ion Oxidation
Pros/Cons of Silicone Leads - ANSWERS-Pros: Longevity, flexible, repairable
Cons: Tacky, thick, easily damaged
Most common cause of Ventricular Safety Pacing? - ANSWERS-Ventricular
Ectopy
Which electrode material is bad? - ANSWERS-Elgiloy
Cardiac action potential:
0-4 - ANSWERS-0 - depolarization (Ca+ and Na+ rush in)
1 - Na+ channels close
END OF
PAGE
1
, IBHRE CCDS EXAM LATEST
2 - Slow Ca+ channels
3 - fast K+ channels
4 - alert
Cardiac Tissue is (-) at rest and (+) at contraction
0 - Na channels are open
1 - K channels open and start repolarization
2 - Ca channels open and delay repolarization
3 - Ca channels close
4 - Rest
Cardiac cells are ______________ charged at rest - ANSWERS-Negatively
Conductor Types - ANSWERS-DFT (Drawn Filled Tube) and DBS (Brawn
Brazed Strand)
Components of DFT and DBS conductors - ANSWERS-Silver and MP35N
Best type of capacitor - ANSWERS-Tantalum Electrolytic
END OF
PAGE
2
, IBHRE CCDS EXAM LATEST
Describe the depletion Lithium Silver Vanadium Oxide battery - ANSWERS-
Predictable, 3 plateaus in discharge curve
Common battery type for ppm? ICD? - ANSWERS-Ppm - Lithium Iodide
ICD - Lithium Silver vanadium oxide
1 Hz = ___________ bpm - ANSWERS-60
100 bpm = _________ Hz - ANSWERS-1
Battery components:
Capacitor -
Reed Switch -
Diode -
Resistor -
Rectifier - - ANSWERS-Cap - stores electrical charge
Reed - switches ppm to Magnet mode
Diode - ensures one way flow of current
Resistor - restricts current flow
rectifier - creates all pos or all neg signals
END OF
PAGE
3
, IBHRE CCDS EXAM LATEST
Voltage of PPM battery? - ANSWERS-2.8V
Voltage of ICD battery? - ANSWERS-3.2V
Types of Sensors: Open Loop - ANSWERS-Only takes in positive feedback; ex:
piezoelectric sensor senses movement -> increased rate until no more sensed
movement
Types of sensor: closed loop - ANSWERS-More physiologic than open loop; rate
changes in response to physiologic change -> rate stays until physiologic state
indicates it needs to slow (ex: 02 sats)
Types of Sensors: Primary - ANSWERS-Detects changes that normal effect the
sinus node (02 sats, myocardial contractilty)
Types of sensors: Secondary - ANSWERS-Detects internal changes that result
from exercise
Types of sensors: Tertiary - ANSWERS-Detects external changes as a result of
exercise (piezoelectric, accelerometer)
Describe acute threshold graph of steroid eluting lead VS polished platinum post
implat - ANSWERS-Steroid: low threshold and not much change
END OF
PAGE
4
What is the suggested type of antibiotics? - ANSWERS-Beta-Lactam antibiotics,
vancomycin reserved for those with penicillin allerigies
What lead insulation material best reduces ingrowth? - ANSWERS-.ePTFE
Which lead insulation material is most susceptible to metal ion oxidation (MIO)
and environmental stress cracking (ESC) - ANSWERS-Poly 80A
ESC and MIO - ANSWERS-Environmental Stress Cracking
Metal Ion Oxidation
Pros/Cons of Silicone Leads - ANSWERS-Pros: Longevity, flexible, repairable
Cons: Tacky, thick, easily damaged
Most common cause of Ventricular Safety Pacing? - ANSWERS-Ventricular
Ectopy
Which electrode material is bad? - ANSWERS-Elgiloy
Cardiac action potential:
0-4 - ANSWERS-0 - depolarization (Ca+ and Na+ rush in)
1 - Na+ channels close
END OF
PAGE
1
, IBHRE CCDS EXAM LATEST
2 - Slow Ca+ channels
3 - fast K+ channels
4 - alert
Cardiac Tissue is (-) at rest and (+) at contraction
0 - Na channels are open
1 - K channels open and start repolarization
2 - Ca channels open and delay repolarization
3 - Ca channels close
4 - Rest
Cardiac cells are ______________ charged at rest - ANSWERS-Negatively
Conductor Types - ANSWERS-DFT (Drawn Filled Tube) and DBS (Brawn
Brazed Strand)
Components of DFT and DBS conductors - ANSWERS-Silver and MP35N
Best type of capacitor - ANSWERS-Tantalum Electrolytic
END OF
PAGE
2
, IBHRE CCDS EXAM LATEST
Describe the depletion Lithium Silver Vanadium Oxide battery - ANSWERS-
Predictable, 3 plateaus in discharge curve
Common battery type for ppm? ICD? - ANSWERS-Ppm - Lithium Iodide
ICD - Lithium Silver vanadium oxide
1 Hz = ___________ bpm - ANSWERS-60
100 bpm = _________ Hz - ANSWERS-1
Battery components:
Capacitor -
Reed Switch -
Diode -
Resistor -
Rectifier - - ANSWERS-Cap - stores electrical charge
Reed - switches ppm to Magnet mode
Diode - ensures one way flow of current
Resistor - restricts current flow
rectifier - creates all pos or all neg signals
END OF
PAGE
3
, IBHRE CCDS EXAM LATEST
Voltage of PPM battery? - ANSWERS-2.8V
Voltage of ICD battery? - ANSWERS-3.2V
Types of Sensors: Open Loop - ANSWERS-Only takes in positive feedback; ex:
piezoelectric sensor senses movement -> increased rate until no more sensed
movement
Types of sensor: closed loop - ANSWERS-More physiologic than open loop; rate
changes in response to physiologic change -> rate stays until physiologic state
indicates it needs to slow (ex: 02 sats)
Types of Sensors: Primary - ANSWERS-Detects changes that normal effect the
sinus node (02 sats, myocardial contractilty)
Types of sensors: Secondary - ANSWERS-Detects internal changes that result
from exercise
Types of sensors: Tertiary - ANSWERS-Detects external changes as a result of
exercise (piezoelectric, accelerometer)
Describe acute threshold graph of steroid eluting lead VS polished platinum post
implat - ANSWERS-Steroid: low threshold and not much change
END OF
PAGE
4
