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WorksheetsQuiz ACES Episode 1
Total questions: 12
Worksheet time: 10mins
Spontaneous depolarization in sinoatrial node (phase 4) is mediated by …..
I Ca.T
I Ca.L
I funny
I Kr
I Ks
What is the mechanism of phase 2 depolarization (plateau) in myocardial muscle?
Ca2+ influx
Ca2+ influx and K+ efflux
K+ efflux
K+ efflux and Na+ influx
Na+ influx
Which of the following statements regarding the cardiac conduction system is CORRECT?
Atrioventricular node is located near the base of the triangle of Koch
In most human, the atrioventricular node receives its blood supply from the branch of left anterior descending coronary artery
Purkinje fibers run in the subepicardium and into the myocardium in a net-like fashion
In most human, SA node receives its blood supply from the branch of left circumflex coronary artery
In the normal heart, the atrioventricular conduction system provides the only pathway of muscular continuity between the atrial and ventricular myocardium
Which of the following statements regarding the mechanisms of cardiac arrhythmias is CORRECT?
In the typical form of atrioventricular (AV) nodal reentrant tachycardia, anterograde conduction occurs down the “fast” pathway
In orthodromic AV reentrant tachycardia, the activation wave travels via the accessory pathway to the ventricles then retrograde via the AV node to the atria
In most patients with Wolff-Parkinson-White syndrome, the accessory pathway conducts more rapidly than the normal AV node but takes longer to recover excitability
Abnormal automaticity is the most common mechanism of atrial flutter
All forms of ventricular tachycardia arise from abnormal automaticity
What is the most common mechanism of this arrhythmia?
Abnormal automaticity
Altered impulse conduction
Delayed after depolarization
Early after depolarization
Reentry
What is the most common mechanism of this arrhythmia?
Abnormal automaticity
Altered impulse formation
Delayed after depolarization
Early after depolarization
Reentry
What is the most common mechanism of this arrhythmia?
Abnormal automaticity
Altered impulse formation
Delayed after depolarization
Early after depolarization
Reentry
Which one of the following is NOT an appropriate indication of Holter monitoring?
A 46 y.o male with hypertension, diabetes and history of ischemic stroke, for paroxysmal atrial fibrillation screening
A 44 y.o female with previously documented paroxysmal supraventricular tachycardia, to assess SVT burden
A 55 y.o female with suspicion of variant angina
A 34 y.o male with hypertrophic cardiomyopathy, to detect atrial and ventricular arrhythmia
A 67 y.o female with permanent atrial fibrillation, to assess the adequacy of rate control strategy
What is the most appropriate ambulatory ECG monitoring for assessment of patient with unexplained recurrent palpitation that occurs approximately every 2 – 3 days?
External loop recorder
Handheld ECG recorder
Holter monitoring
Implantable loop recorder
Smartwatch
A 72 y.o female with history of ischemic stroke underwent a 72 hours Holter monitoring. During mid day (at 01.07 PM), this rhythm was recorded. Patient was walking in the park during that time. Which action do you take next?
Reassurance
Correlate symptoms with concurrent rhythm
Prescribe salbutamol / theophyllin
Implant DDD(R) pacemaker
Implant AAI(R) pacemaker
Subcutaneous telemetry that available to record ECG for years are called?
Holter
MCOT
ILR
Loop monitor
Patch monitor
The most common cause of syncope in young adults is?
Vasovagal syncope
Postural orthostatic tachycardia syndrome
Arrhythmia
Dehydration
Psychogenic
