EP Quiz Archive
EP Quiz #31
A 42-year-old female with palpitations has a 12-lead ECG showing RP > PR with retrograde P waves. What are the differential diagnoses and how do you distinguish them?
EP Quiz #30
A 61-year-old has complete LBBB with 1st degree AV block. His PR interval is 220 ms. Echo shows severe LV dysfunction. What is the risk of pacemaker dependence post-CRT implant?
EP Quiz #29
A 33-year-old with catecholaminergic polymorphic VT is on high-dose nadolol. He has a recurrent syncopal event during exercise stress testing. What next?
EP Quiz #28
A 58-year-old with hypertensive heart disease has paroxysmal AF. He is on flecainide 100 mg BD. He now presents with haemodynamic instability and wide complex tachycardia.
EP Quiz #27
Identify the tachycardia: narrow complex at 140 bpm, retrograde P waves within the ST segment, 1:1 VA relationship, inducible with a single atrial extrastimulus.
EP Quiz #26
A teenager with Wolff-Parkinson-White syndrome is asymptomatic. His parents are concerned. What is the role of programmed electrical stimulation in risk stratification?
EP Quiz #25
A 66-year-old post-CABG patient develops 2:1 AV block post-operatively. His HV interval on EP study is 90 ms. What is the prognosis and management?
EP Quiz #24
A 30-year-old with ARVD/C has RV-origin VT. Substrate mapping reveals the triangle of dysplasia. What are the ablation targets? What is the recurrence risk?
EP Quiz #23
A 45-year-old marathon runner has sinus bradycardia at 38 bpm and is asymptomatic. His Holter shows nocturnal pauses of 2.5 seconds. Is pacing indicated?
EP Quiz #22
A 72-year-old with sick sinus syndrome has sinus pauses up to 4 seconds on Holter. He has intermittent dizziness. What pacing mode is most appropriate?
EP Quiz #21
A 50-year-old presents with irregular palpitations. His ECG shows atrial flutter at 300 bpm with variable block. What is the preferred ablation target?
EP Quiz #20
A 60-year-old with ischaemic cardiomyopathy undergoes VT ablation. Activation mapping during stable VT reveals the exit point. What is the ablation endpoint?