IBHRE CEPS TEST FINAL EXAM 2024 /2025 NEWEST!!
ACTUAL COMPLETE ACCURATE EXAM QUESTIONS WITH
CORRECT DETAILED ANSWERS ( VERIFIED ANSWERS)
/ALREADY GRADED A+
What system remotely steers guided catheters - ANSWER -Hansen
robotic system
What is used to visualize shunts or distinguish right from left
chamber - ANSWER -Agitated saline
Where does conductive heating occur - ANSWER -2-5 mm beneath
electrode
typical lesion size of 7 Fr 4 mm dry tip - ANSWER -5-6 mm wide / 2-3
mm deep
What to do when using irrigated ablation catheter at more than 30
W and why - ANSWER -increase flow rate to
15-30 ml/min to avoid
char formation
What happens to pump when coming on ablation - ANSWER -
increases flow (8-30 ml/min)
ACT for using array - ANSWER -ACT 250-300
,bipolar cardiac electrodes record local _________ that occur during
phase _______ - ANSWER -depolarizations /
phase
0
surface EKG leads usually filtered at what - ANSWER -.1 - 100 Hz
Normal EGM filter settings - ANSWER -30 - 300 Hz
What to do if T waves interfere with A/V and why - ANSWER -
Increase the high pass filter because T waves are
lower frequency as
well as far field
Unipolar filter setting - ANSWER -.05 - 300 Hz
How each is measured: Diagnostic catheter OD , Inflated balloon
cath OD, Needle OD, Guide wire - ANSWER -
Diag: Fr / Balloon: mm / Needle: gauge / GW:
inch (thousandth of inches)
Standard sizes of micropuncture introducer sets and their purpose
- ANSWER -21 gauge needle / .018 inch wire.
Purpose of micropuncture introducer set is for
placement of .035-.038 inch GW
, Thermal latency - ANSWER -deep tissue temps continue to rise for
several seconds after RF energy has stopped
(conductive heating still occurring even
though resistive heating has stopped)
Most of the lesion is due to what and why is this important - ANSWER
--conductive heating 2-5 mm below surface
-important because it means we have to ablate for at least 30-60
seconds to allow for conductive heating to form a
full
lesion
The main factor opposing RF heating is what - ANSWER --
convective cooling (heat loss) to surrounding blood
what phase is the beginning of Ventricular diastole - ANSWER -
isovolumetric relaxation
isovolumetric relaxation - ANSWER --
Ventricles relax (no change in volume)
-Ventricular pressure becomes < aortic
pressure = semilunar valves shut
-2nd heart sound occurs in this phase
(closing of semilunar valves)
ACTUAL COMPLETE ACCURATE EXAM QUESTIONS WITH
CORRECT DETAILED ANSWERS ( VERIFIED ANSWERS)
/ALREADY GRADED A+
What system remotely steers guided catheters - ANSWER -Hansen
robotic system
What is used to visualize shunts or distinguish right from left
chamber - ANSWER -Agitated saline
Where does conductive heating occur - ANSWER -2-5 mm beneath
electrode
typical lesion size of 7 Fr 4 mm dry tip - ANSWER -5-6 mm wide / 2-3
mm deep
What to do when using irrigated ablation catheter at more than 30
W and why - ANSWER -increase flow rate to
15-30 ml/min to avoid
char formation
What happens to pump when coming on ablation - ANSWER -
increases flow (8-30 ml/min)
ACT for using array - ANSWER -ACT 250-300
,bipolar cardiac electrodes record local _________ that occur during
phase _______ - ANSWER -depolarizations /
phase
0
surface EKG leads usually filtered at what - ANSWER -.1 - 100 Hz
Normal EGM filter settings - ANSWER -30 - 300 Hz
What to do if T waves interfere with A/V and why - ANSWER -
Increase the high pass filter because T waves are
lower frequency as
well as far field
Unipolar filter setting - ANSWER -.05 - 300 Hz
How each is measured: Diagnostic catheter OD , Inflated balloon
cath OD, Needle OD, Guide wire - ANSWER -
Diag: Fr / Balloon: mm / Needle: gauge / GW:
inch (thousandth of inches)
Standard sizes of micropuncture introducer sets and their purpose
- ANSWER -21 gauge needle / .018 inch wire.
Purpose of micropuncture introducer set is for
placement of .035-.038 inch GW
, Thermal latency - ANSWER -deep tissue temps continue to rise for
several seconds after RF energy has stopped
(conductive heating still occurring even
though resistive heating has stopped)
Most of the lesion is due to what and why is this important - ANSWER
--conductive heating 2-5 mm below surface
-important because it means we have to ablate for at least 30-60
seconds to allow for conductive heating to form a
full
lesion
The main factor opposing RF heating is what - ANSWER --
convective cooling (heat loss) to surrounding blood
what phase is the beginning of Ventricular diastole - ANSWER -
isovolumetric relaxation
isovolumetric relaxation - ANSWER --
Ventricles relax (no change in volume)
-Ventricular pressure becomes < aortic
pressure = semilunar valves shut
-2nd heart sound occurs in this phase
(closing of semilunar valves)
