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EP IBHRE questions and answers graded A+ 2025/2026
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EP IBHRE questions and answers graded A+ 2025/2026
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EP IBHREA blockage to which coronary artery can cause AV Block? - ANSPosterior Descending Artery
maximum normally supplied via RCA but can be provided by means of the circumflex
What form of tissue has the longest refractory duration? - ANSVentricular
Is the femoral vein medial or lateral to the femoral artery? - ANSThe femoral vein is medial
to the femoral artery
At what fee is something statistically considerable? - ANSP<0.05
What are the normal cardiac pressures? - ANS"RA: 2-8 mmHg
LA: 5-12 mmHg
RV: 15-28 mmHg
LV: 90-140 mmHg
Aorta: 120 mmHg"
While performing a tilt test you see asystole. What is your next step? - ANSReturn patient to
the supine position
What causes a ice-cream scoop like ST segment? - ANSDigitalis Toxicity
What structure is at the base of the Triangle of Koch? - ANSCS OS
"The phenomenon of capture hysteresis is also known as:
a. Wenckebach
b. Wedensky effect
c. Wolf-Parkinson white effect
d. Wilkoff effect" - ANSb. Wedensky effect (Threshold lower when measured from high to
low than when measured from lower to higher outpus, due to hyperpolerization of the
myocardial cell membranes because of high output stimulation)
"In a normal axis on a 12 lead ECG:
a. Lead I is negative and AVR is positive
b. Lead I is positive and V1 is positive
c. Lead I is positive and AVF is positive
d. Lead I is positive and V5 and V6 are negative
" - ANSC. Lead I is positive and AVF is positive
"What effect does Diltiazem have on the AV node?
A. Slows conduction by blocking calcium channels
b. Prolongs the refractory period by blocking the sodium channels
c. Increases the HV interval by blocking the calcium channels
,d. None" - ANSa. Slows conduction by blocking calcium channels
"Class II AA drugs do all of the following except:
a. Decrease sympathetic tone
b. Increase refractory period
c. Beta blockade
d. Affect SA and AV node" - ANSb. Increase refractory period
"Conduction times over a conventional pathway is typically rate dependent, i.E., VA and AV
times remain constant with incremental pacing. A specific difference to this is demonstrated
in what type of pathway which demonstrate decremental property similar to the AV node:
a. Mahaim fiber
b. James fiber
c. Nodofasicular fiber
d. Both A and C
e. None of the above
" - ANSd. Both A and C
"All of the following are located at or near the CS os EXCEPT:
a. Christa terminalis
b. Tricuspid annulus
c. Eustachian ridge
d. Thebesian valve
" - ANSa. Crista terminalis
"The time from electrical depolarization to mechanical systole is:
a. Evoked response interval
b. Pre-ejection interval
c. Q-T interval
d. DV/dT
" - ANSa. Evoked response interval
"What type of procedure would most likely be performed on a patient with HOCM
a. Mustard procedure
b. Blalock taussing shunt
c. Septal myectomy
d. Fontan procedure
" - ANSc. Septal myectomy
"A new study showed the result of a head to head comparison of DRUG A versus DRUG B
outcomes. The difference between the two drugs was shown to have P value of 0.15. Based
on these findings:
a. DRUG A showed a significant outcome based on this trial
b. DRUG B showed a significant outcome based on this trial
c. Neither showed a significant outcome based on this trial
d. DRUG A showed an inferior outcome based on this trial
" - ANSc. Neither showed a significant outcome based on this trial
, "A 30 year old patient with a history of paroxysmal atrial fibrillation and Ventricular
tachycardia has been seen in the device clinic. The interrogation shows an increase in the
pacing threshold, as well as 2 failed shocks for VF which broke spontaneously after the
episodes. The patient states his cardiologist changed a drug to help with his atrial fibrillation.
Which drug would you suspect:
a. Amiodarone
b. Metoprolol
c. Flecainide
d. None
" - ANSc. Flecainide
"Ablation of isthmus dependent typical flutter is performed by connecting which two anatomic
structures ?
A. The eustachian ridge to the tendon of todaro
b. The tricuspid valve to the foramen ovale
c. The mitral valve to the left inferior pulmonary vein
d. The tricuspid valve to the eustachian ridge
" - ANSd. The tricuspid valve to the eustachian ridge
"The shortest coupling interval that allows impulse propagation is termed:
a. Effective refractory period (ERP)
b. Functional refractory period (FRP)
c. Relative refractory period (RRP)
d. None of the above
" - ANSb. Functional refractory period (FRP)
"The longest coupling interval that fails to propagate an impulse is termed:
a. Effective refractory period (ERP)
b. Functional refractory period (FRP)
c. Relative refractory period (RRP)
d. None of the above
" - ANSa. Effective refractory period (ERP)
"What is the correct anatomic position for lead V4
a. 4th intercostal space on the left sternal border
b. 4th intercostal space on the right sternal border
c. 5th intercostal space at the left mid-clavicular line
d. 5th intercostal space at the left axillary line
e. None of the above
" - ANS"c. 5th intercostal space at the left mid-clavicular line
(V1: 4th intercostal space to the right of the sternum, V2: 4th intercostal space to the left of
the sternum, V3: between V2 & V4, V4: 5th intercostal space at the mid-clavicular line, V5:
Horizontally even with V4 at Anterior Axillary line, V6: Horizontally even with V4 & V5 but on
Mid axillary line"
What agent causes venous irritation? - ANSValium
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