Podcast
Questions and Answers
What is the ideal way of establishing a causal relationship between a symptom and rhythm disturbance?
What is the ideal way of establishing a causal relationship between a symptom and rhythm disturbance?
- Electrocardiographic monitoring (correct)
- Autonomic Testing
- Intracardiac electrocardiographic recordings
- Electrophysiologic testing
Which class of antiarrhythmic agents block membrane sodium channels?
Which class of antiarrhythmic agents block membrane sodium channels?
- Class Ia (correct)
- Class Ib
- Class II
- Class Ic
What mechanism is responsible for paroxysmal supraventricular arrhythmias and atrial flutter?
What mechanism is responsible for paroxysmal supraventricular arrhythmias and atrial flutter?
- Triggered activity
- Disorders of impulse conduction in the IV conduction system
- Disorders of impulse formation in the sinus node
- Reentry (correct)
Which technique employs intracardiac electrocardiographic recordings and programmed atrial or ventricular stimulations?
Which technique employs intracardiac electrocardiographic recordings and programmed atrial or ventricular stimulations?
Which subclass of Class I antiarrhythmic agents slows the rate of rise of the action potential and prolongs its duration?
Which subclass of Class I antiarrhythmic agents slows the rate of rise of the action potential and prolongs its duration?
What is responsible for evaluation of individuals with an imbalance between sympathetic and parasympathetic autonomic activity?
What is responsible for evaluation of individuals with an imbalance between sympathetic and parasympathetic autonomic activity?
Which type of antiarrhythmic drug prolongs Vmax and slows depolarization, thus slowing conduction and prolonging refractoriness?
Which type of antiarrhythmic drug prolongs Vmax and slows depolarization, thus slowing conduction and prolonging refractoriness?
What is the normal intrinsic heart rate of the AV Node, which acts as a back-up pacemaker?
What is the normal intrinsic heart rate of the AV Node, which acts as a back-up pacemaker?
What is the term for a heart rate faster than 100 beats/min caused by rapid impulse formation from the normal pacemaker?
What is the term for a heart rate faster than 100 beats/min caused by rapid impulse formation from the normal pacemaker?
What is a common cause of sinus tachycardia and other supraventricular arrhythmias?
What is a common cause of sinus tachycardia and other supraventricular arrhythmias?
What is the term for contractions that fire continuously from a looping re-entrant circuit in the atria?
What is the term for contractions that fire continuously from a looping re-entrant circuit in the atria?
Which mechanical measure stimulates the vagus, delays AV conduction, and blocks reentry mechanisms, terminating arrhythmias?
Which mechanical measure stimulates the vagus, delays AV conduction, and blocks reentry mechanisms, terminating arrhythmias?
What is the initial bolus dose of i.v. adenosine used to terminate episodes of paroxysmal supraventricular tachycardia?
What is the initial bolus dose of i.v. adenosine used to terminate episodes of paroxysmal supraventricular tachycardia?
What percentage of patients may experience transient flushing and chest discomfort after receiving i.v. adenosine?
What percentage of patients may experience transient flushing and chest discomfort after receiving i.v. adenosine?
Which drug therapy rapidly induces AV block and breaks most reentry supraventricular tachycardia?
Which drug therapy rapidly induces AV block and breaks most reentry supraventricular tachycardia?
Which type of arrhythmia is characterized by a cyclic increase in normal heart rate with inspiration and decrease with expiration?
Which type of arrhythmia is characterized by a cyclic increase in normal heart rate with inspiration and decrease with expiration?
What is the term for a heart rate that is slower than 50/min due to vagal influence on the normal pacemaker or organic disease of the sinus node?
What is the term for a heart rate that is slower than 50/min due to vagal influence on the normal pacemaker or organic disease of the sinus node?
Which of the following is the drug of choice for preventing attacks of supraventricular tachycardia (SVT)?
Which of the following is the drug of choice for preventing attacks of supraventricular tachycardia (SVT)?
What is the preferred approach for patients with recurrent SVT?
What is the preferred approach for patients with recurrent SVT?
In which condition should electrical cardioversion be avoided?
In which condition should electrical cardioversion be avoided?
What is the commonest chronic arrhythmia?
What is the commonest chronic arrhythmia?
What may precipitate atrial fibrillation, often referred to as 'holiday heart'?
What may precipitate atrial fibrillation, often referred to as 'holiday heart'?
What is the major risk associated with chronic atrial fibrillation?
What is the major risk associated with chronic atrial fibrillation?
What is the typical rate for ventricular tachycardia?
What is the typical rate for ventricular tachycardia?
Which drug is recommended for treating Ventricular Tachycardia if the patient is tolerating the rhythm?
Which drug is recommended for treating Ventricular Tachycardia if the patient is tolerating the rhythm?
In which condition may Torsade de pointes occur spontaneously or after certain drugs?
In which condition may Torsade de pointes occur spontaneously or after certain drugs?
What is the treatment indicated for Acute Ventricular Tachycardia if hypotension, heart failure, or angina is present?
What is the treatment indicated for Acute Ventricular Tachycardia if hypotension, heart failure, or angina is present?
What is the best treatment for nonsustained ventricular tachycardia in the case of recurrent ventricular tachycardia post AMI?
What is the best treatment for nonsustained ventricular tachycardia in the case of recurrent ventricular tachycardia post AMI?
What is the emergency treatment for a patient in cardiac arrest due to Ventricular Fibrillation?
What is the emergency treatment for a patient in cardiac arrest due to Ventricular Fibrillation?
Which condition is often caused or exacerbated by drug therapy such as digitalis, Ca channel blockers, beta-blockers, and antiarrhythmics?
Which condition is often caused or exacerbated by drug therapy such as digitalis, Ca channel blockers, beta-blockers, and antiarrhythmics?
What characterizes Second-degree AV Block, Type II?
What characterizes Second-degree AV Block, Type II?
'Complete (third- degree) heart block' due to a lesion distal to the His bundle results in:
'Complete (third- degree) heart block' due to a lesion distal to the His bundle results in:
'Mobitz type I (Wenckebach)' pattern of PR interval lengthening before the blocked beat occurs in which type of AV Block?
'Mobitz type I (Wenckebach)' pattern of PR interval lengthening before the blocked beat occurs in which type of AV Block?
In which condition may Premature Ventricular Contractions be revealed more frequently and complex during ambulatory ECG monitoring or an exercise test?
In which condition may Premature Ventricular Contractions be revealed more frequently and complex during ambulatory ECG monitoring or an exercise test?
What is a common factor associated with Sick Sinus Syndrome?
What is a common factor associated with Sick Sinus Syndrome?
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