[MCQ] The Tachyarrhythmias- Part 3

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The Tachyarrhythmias- Part 3

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Congratulations - you have completed The Tachyarrhythmias- Part 3. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

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Question 1

Focal ATs can be distinguished by ?

A	Response to adenosine
B	Response to amiodarone
C	Response to verapamil
D	All of the above

Question 1 Explanation:

Focal ATs can be distinguished by observations made at AT initiation & in response to adenosine

Question 2

Which of the following is false about automatic atrial tachycardias ?

A	Respond to adenosine
B	Respond to adenosine
C	First P wave of AT has same morphology as remaining waves
D	None of the above

Question 2 Explanation:

Automatic ATs start with a “warm-up” period over the first 3 - 10 complexes and slow in rate before termination. They may respond to adenosine. Initiation of automatic ATs frequently can be provoked by isoproterenol infusion. First P wave of tachycardia has same morphology as remaining waves.

Question 3

Which of the following is false about focal reentrant atrial tachycardias ?

A	Initiate with spontaneous premature beats
B	P wave initiating tachycardia has different morphology than P wave during sustained AT
C	Do not slow and/or terminate with adenosine
D	None of the above

Question 3 Explanation:

Focal reentrant AT initiate with programmed atrial stimulation or spontaneous premature beats. P wave initiating tachycardia has a different morphology than P wave during sustained AT. P wave in AT is characteristically distinct from the sinus P-wave morphology. With adenosine, reentrant ATs will produce AV block but typically do not slow and/or terminate.

Question 4

Which of the following is an anatomic ridge in heart ?

A	Crista terminalis
B	Valve annuli
C	Limbus of fossa ovalis
D	All of the above

Question 4 Explanation:

Anatomic ridges of heart are crista terminalis, valve annuli or limbus of the fossa ovalis

Question 5

Incidence of supraventricular tachycardia (SVT) is about ?

A	35 cases per 100,000 persons per year
B	70 cases per 100,000 persons per year
C	100 cases per 100,000 persons per year
D	150 cases per 100,000 persons per year

Question 6

Prevalence of supraventricular tachycardia is about ?

A	2.25 per 1000
B	5 per 1000
C	10 per 1000
D	20 per 1000

Question 7

Which of the following symptoms is uncommon in supraventricular tachycardia ?

A	Palpitations
B	Dyspnea
C	Light-headedness
D	Syncope

Question 8

Which of the following statements about SVT is false ?

A	Most have a reentry mechanism
B	Classified according to location of reentry circuit
C	~ 60 % are due to AV nodal reentry circuit
D	SVT is usually associated with structural heart disease

Question 9

In SVT, adenosine is contraindicated in patients with ?

A	In heart-transplant recipients
B	In patients with severe obstructive lung disease
C	In patients with tachycardia with a wide QRS complex
D	All of the above

Question 10

Which of the following drugs are used in treatment of SVT ?

A	Adenosine
B	Intravenous verapamil
C	Intravenous beta-blocker
D	All of the above

Question 11

Which of the following drugs are used in treatment of SVT ?

A	Intravenous Procainamide
B	Intravenous Ibutilide
C	Intravenous Propafenone
D	All of the above

Question 12

Danger of radiofrequency catheter ablation of accessory pathway in SVT is ?

A	Atrioventricular block that requires pacemaker therapy
B	Damage to an artery, bleeding, arteriovenous fistula
C	Coronary venous thrombosis
D	All of the above

Question 13

Danger of radiofrequency catheter ablation of accessory pathway in SVT is ?

A	Pulmonary embolism
B	Myocardial perforation
C	Valvular damage
D	All of the above

Question 14

Characteristic of radiofrequency current used for catheter ablation of accessory pathways in SVT is ?

A	Low-voltage, high-frequency form of electrical energy
B	High-voltage, low-frequency form of electrical energy
C	High-voltage, high-frequency form of electrical energy
D	Low-voltage, low-frequency form of electrical energy

Question 14 Explanation:

Catheter ablation, directed at elimination or modification of slow pathway conduction, is very effective in permanently eliminating AVNRT.

Question 15

Which of the following about atrioventricular nodal reentrant tachycardia is false ?

A	Most common paroxysmal regular SVT
B	More common in men than in women
C	Typically manifests in II to IV decades of life
D	Occur in the absence of structural heart disease

Question 15 Explanation:

AV nodal reentrant tachycardia is the most common paroxysmal regular SVT. It is more common in women than in men (>2:1). Typically manifests in second to fourth decades of life and tends to occur in the absence of structural heart disease, it is usually well tolerated.

Question 16

“Frog sign” is best related with ?

A	Arterial pulse
B	Jugular veins
C	Abdominal pulsations
D	Nail beds

Question 17

“Frog sign” is best related with ?

A	Atrial fibrillation
B	Atrioventricular nodal reentrant tachycardia
C	Ventricular tachycardia
D	All of the above

Question 17 Explanation:

In atrioventricular nodal reentrant tachycardia, neck pulsations are felt due to simultaneous atrial & ventricular contraction, and a “frog sign” is identified on physical examination during arrhythmia

Question 18

Which of the following about AVNRT is false ?

A	Fast pathway has a longer refractory period
B	Slow pathway lower in the AV node region
C	During sinus rhythm, conduction is through both pathways
D	None of the above

Question 18 Explanation:

Fast pathway is in superior part of AV node and has a longer refractory period, whereas pathway lower in AV node region conducts more slowly and has a shorter refractory period. During sinus rhythm, conduction is through both pathways

Question 19

Which of the following occurs in a typical AV nodal reentrant tachycardia ?

A	Repetitive activation up slow and down fast pathway
B	Repetitive activation down slow and up fast pathway
C	Repetitive activation down slow pathway
D	Repetitive activation down fast pathway

Question 19 Explanation:

Repetitive activation down the slow and up the fast pathway results in typical AV nodal reentrant tachycardia.

Question 20

Which of the following statemtents about SVT is false ?

A	Most common cause is AV nodal reentrant tachycardia
B	More commonly observed in women
C	Presents as regular narrow QRS complex tachycardia @ 120 to 250 bpm
D	APCs that initiate the SVT has a normal PR interval

Question 20 Explanation:

APC initiating AVNRT is characteristically followed by a long PR interval consistent with conduction via the slow pathway

Question 21

Which of the following about sinus tachycardia is false ?

A	Sudden in onset and recession
B	Regular
C	Rate < 220 bpm minus the patient’s age
D	P waves precede the QRS complex

Question 21 Explanation:

Sinus tachycardia is gradual in onset and recession. The heart rate is regular and classically does not exceed 220 beats per minute minus the patient’s age.2 In sinus tachycardia, P waves precede the QRS complex

Question 22

Atrial flutter results from a reentrant circuit around ?

A	Mitral valve
B	Tricuspid valve
C	Aortic valve
D	Pulmonary valve

Question 22 Explanation:

Atrial flutter, the second most common pathologic supraventricular tachycardia, results from a reentrant circuit around the tricuspid valve in the right atrium

Question 23

Which of the following parameter helps distinguish atrial flutter from other supraventricular tachycardias ?

A	Regularity
B	Rate
C	Blood pressure
D	Jugular venous pulsations

Question 23 Explanation:

Atrial flutter is an organized regular rhythm that is characterized by an atrial rate of 280 to 300 beats per minute and with 2:1 conduction in AV node results in a ventricular rate of 140 to 150 beats per minute. Flutter waves are usually obscured by T waves, making the surface ECG tracing for this tachycardia difficult to distinguish from that of other supraventricular tachycardias. However, a heart rate of 150 beats per minute is highly suggestive of this tachyarrhythmia

Question 24

Which of the following occurs more frequently in the pediatric population ?

A	Atrioventricular nodal reentrant tachycardia
B	Atrioventricular reciprocating tachycardia
C	Atrial tachycardia
D	Atrial flutter

Question 24 Explanation:

Atrioventricular nodal reentrant tachycardia is most common in persons >20 years of age, whereas atrioventricular reciprocating tachycardia occurs more frequently in pediatric population

Question 25

Atrioventricular nodal reentrant tachycardia is caused by a reentrant loop that involves atrioventricular node and ?

A	Atrial tissue
B	Ventricular tissue
C	Bundle of His
D	Fascicles

Question 25 Explanation:

Atrioventricular nodal reentrant tachycardia is caused by a reentrant loop that involves the atrioventricular node and the atrial tissue.

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See all quizzes of the The Tachyarrhythmias at here:

1. Focal ATs can be distinguished by ?
A. Response to adenosine
B. Response to amiodarone
C. Response to verapamil
D. All of the above

2. Which of the following is false about automatic atrial tachycardias ?
A. Respond to adenosine
B. Provoked by isoproterenol infusion
C. First P wave of AT has same morphology as remaining waves
D. None of the above
.
3. Which of the following is false about focal reentrant atrial tachycardias ?
A. Initiate with spontaneous premature beats
B. P wave initiating tachycardia has different morphology than
P wave during sustained AT

C. Do not slow and/or terminate with adenosine
D. None of the above

4. Which of the following is an anatomic ridge in heart ?
A. Crista terminalis
B. Valve annuli
C. Limbus of fossa ovalis
D. All of the above

5. Incidence of supraventricular tachycardia (SVT) is about ?
A. 35 cases per 100,000 persons per year
B. 70 cases per 100,000 persons per year
C. 100 cases per 100,000 persons per year
D. 150 cases per 100,000 persons per year

6. Prevalence of supraventricular tachycardia is about ?
A. 2.25 per 1000
B. 5 per 1000
C. 10 per 1000
D. 20 per 1000

7. Which of the following symptoms is uncommon in supraventricular tachycardia ?
A. Palpitations
B. Dyspnea
C. Light-headedness
D. Syncope

8. Which of the following statements about SVT is false ?
A. Most have a reentry mechanism
B. Classified according to location of reentry circuit
C. ~ 60 % are due to AV nodal reentry circuit
D. SVT is usually associated with structural heart disease

9. In SVT, adenosine is contraindicated in patients with ?
A. In heart-transplant recipients
B. In patients with severe obstructive lung disease
C. In patients with tachycardia with a wide QRS complex
D. All of the above

10. Which of the following drugs are used in treatment of SVT ?
A. Adenosine
B. Intravenous verapamil
C. Intravenous beta-blocker

D. All of the above

11. Which of the following drugs are used in treatment of SVT ?
A. Intravenous Procainamide
B. Intravenous Ibutilide
C. Intravenous Propafenone
D. All of the above

12. Danger of radiofrequency catheter ablation of accessory pathway in SVT is ?
A. Atrioventricular block that requires pacemaker therapy
B. Damage to an artery, bleeding, arteriovenous fistula
C. Coronary venous thrombosis
D. All of the above

13. Danger of radiofrequency catheter ablation of accessory pathway in SVT is ?
A. Pulmonary embolism
B. Myocardial perforation
C. Valvular damage
D. All of the above

14. Characteristic of radiofrequency current used for catheter ablation of accessory pathways in SVT is ?
A. Low-voltage, high-frequency form of electrical energy
B. High-voltage, low-frequency form of electrical energy
C. High-voltage, high-frequency form of electrical energy
D. Low-voltage, low-frequency form of electrical energy

15. Which of the following about atrioventricular nodal reentrant tachycardia is false ?
A. Most common paroxysmal regular SVT
B. More common in men than in women
C. Typically manifests in II to IV decades of life
D. Occur in the absence of structural heart disease

16. “Frog sign” is best related with ?
A. Arterial pulse
B. Jugular veins
C. Abdominal pulsations
D. Nail beds

17. “Frog sign” is best related with ?
A. Atrial fibrillation
B. Atrioventricular nodal reentrant tachycardia

C. Ventricular tachycardia
D. All of the above

18. Which of the following about AVNRT is false ?
A. Fast pathway has a longer refractory period
B. Slow pathway lower in the AV node region
C. During sinus rhythm, conduction is through both pathways
D. None of the above

19. Which of the following occurs in a typical AV nodal reentrant tachycardia ?
A. Repetitive activation up slow and down fast pathway
B. Repetitive activation down slow and up fast pathway
C. Repetitive activation down slow pathway
D. Repetitive activation down fast pathway

20. Which of the following statemtents about SVT is false ?
A. Most common cause is AV nodal reentrant tachycardia
B. More commonly observed in women
C. Presents as regular narrow QRS complex tachycardia @ 120 to 250 bpm
D. APCs that initiate the SVT has a normal PR interval

21. Which of the following about sinus tachycardia is false ?
A. Sudden in onset and recession
B. Regular
C. Rate < 220 bpm minus the patient’s age
D. P waves precede the QRS complex

22. Atrial flutter results from a reentrant circuit around ?
A. Mitral valve
B. Tricuspid valve
C. Aortic valve
D. Pulmonary valve

23. Which of the following parameter helps distinguish atrial flutter from other supraventricular tachycardias ?

A. Regularity
B. Rate
C. Blood pressure
D. Jugular venous pulsations

24. Which of the following occurs more frequently in the pediatric population ?
A. Atrioventricular nodal reentrant tachycardia
B. Atrioventricular reciprocating tachycardia
C. Atrial tachycardia
D. Atrial flutter

25. Atrioventricular nodal reentrant tachycardia is caused by a reentrant loop that involves atrioventricular node and ?
A. Atrial tissue
B. Ventricular tissue
C. Bundle of His
D. Fascicles

The Tachyarrhythmias

[MCQ] The Tachyarrhythmias- Part 3

I. Start the exam by click the “Start” button

The Tachyarrhythmias- Part 3

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