Deck 9: Rhythms Originating in the AV Junction

Question 1

Junctional rhythms originate in the

A)sinoatrial junction.
B)atrioventricular junction.
C)sinoventricular junction.
D)sinus node junction.

Answer 1

B

Question 2

Junctional bradycardia has a heart rate of

A)less than 40.
B)60-100.
C)40-100.
D)greater than 100.

Answer 2

A

Question 3

Which junctional rhythm has the same heart rate as sinus rhythm?

A)Junctional bradycardia
B)Junctional rhythm
C)Accelerated junctional rhythm
D)Junctional tachycardia

Answer 3

C

Question 4

Junctional tachycardia is associated with which medication toxicity?

A)Quinidine
B)Digitalis
C)Atropine
D)Oxygen

Question 5

Treatment for occasional PJCs is to

A)give atropine to speed the heart rate up.
B)give digitalis to slow the heart rate down.
C)shock the heart out of the rhythm.
D)treat the cause.

Question 6

Junctional tachycardia without visible P waves is best called

A)sinus tachycardia.
B)SVT.
C)atrial tachycardia.
D)PJCs.

Question 7

In ,the rhythm is

A)sinus rhythm.
B)junctional rhythm.
C)atrial fibrillation.
D)atrial tachycardia.

Question 8

PJCs are a result of

A)escape.
B)usurpation.
C)sinus node failure.
D)atrial failure.

Question 9

In high junctional rhythms,the P wave is

A)upright,rounded,preceding the QRS.
B)inverted following the QRS.
C)inverted preceding the QRS.
D)hidden inside the QRS.

Question 10

Accelerated junctional rhythm has a heart rate of

A)less than 40.
B)60-100.
C)40-100.
D)greater than 100.

Question 11

Junctional tachycardia has a heart rate of

A)40-60.
B)60-100.
C)less than 40.
D)greater than 100.

Question 12

The AV node is located in the

A)left atrium.
B)right atrium.
C)right ventricle.
D)left ventricle.

Question 13

In Figure 9,the P waves are

A)upright,rounded,preceding the QRS.
B)inverted preceding the QRS.
C)not visible.
D)inverted following the QRS.

Question 14

A junctional rhythm with a heart rate of 125 is called

A)junctional bradycardia.
B)junctional rhythm.
C)accelerated junctional rhythm.
D)junctional tachycardia.

Question 15

Treatment for the rhythm could include ALL BUT

A)atropine.
B)oxygen.
C)electrical shock to the heart.
D)no treatment.

Question 16

The rhythm in Figure 9 originated

A)in the sinus node.
B)high up in the AV junction.
C)in the atrium.
D)low down in the AV junction.

Question 17

The heart rate is closest to

A)50.
B)75.
C)100.
D)125.

Question 18

A premature beat arising from the AV junction is called a

A)PAC.
B)junctional escape beat.
C)PJC.
D)PVC.

Question 19

The rhythm in Figure 9 is

A)sinus rhythm.
B)accelerated junctional rhythm.
C)atrial fibrillation.
D)junctional bradycardia.

Question 20

In which rhythm is decreased cardiac output most likely to be a concern?

A)Sinus rhythm
B)Accelerated junctional rhythm
C)Junctional bradycardia
D)Junctional rhythm

Question 21

Junctional tachycardia is usually a result of escape.

Question 22

Electrical shock is used to treat frequent PJCs.

Question 23

Junctional rhythms have retrograde conduction to the ventricles.

Question 24

Which of the following junctional rhythms typically cause no ill effects?

A)PJC and accelerated junctional rhythm
B)Junctional tachycardia and junctional bradycardia
C)PJC and junctional tachycardia
D)Accelerated junctional rhythm and junctional bradycardia

Question 25

In mid-junctional rhythms,the P wave is

A)upright,rounded,preceding the QRS.
B)inverted following the QRS.
C)inverted preceding the QRS.
D)hidden inside the QRS.

Question 26

Junctional tachycardia has a heart rate greater than 100.

Question 27

Junctional bradycardia is usually the result of usurpation.

Question 28

All junctional rhythms originate in the area around the AV node.

Question 29

Treatment for junctional tachycardia might include withholding digitalis administration.

Question 30

In low junctional rhythms,the P wave is

A)upright,rounded,preceding the QRS.
B)inverted following the QRS.
C)inverted preceding the QRS.
D)hidden inside the QRS.

Question 31

Conduction to the atria in junctional rhythms is said to be

A)antegrade.
B)retrograde.
C)absent.
D)silent.

Question 32

Junctional rhythm has no QRS complexes.

Question 33

PJC and junctional tachycardia are similar in that

A)both have regular but interrupted regularity.
B)both can have hidden P waves.
C)both have heart rates less than 40.
D)both require electrical shock to the heart.

Question 34

"Retrograde" means forwards.

Question 35

Low junctional rhythms originate low down in the ventricle.

Question 36

Junctional rhythm has a heart rate the same as sinus bradycardia.

Question 37

Junctional bradycardia must have a heart rate less than 20.

Question 38

"Antegrade" means backwards.

Question 39

Which junctional rhythm is commonly treated with atropine?

A)Junctional tachycardia
B)Premature junctional complex
C)Accelerated junctional rhythm
D)Junctional bradycardia

Question 40

Mid-junctional rhythms originate midway between the sinus node and the atria.

Question 41

All junctional rhythms are life-threatening.

Question 42

Junctional tachycardia is best called SVT if there are no ________ P waves.

Question 43

Name three causes of junctional tachycardia.

Question 44

Atropine should be given for junctional bradycardia if the patient is ________.

Question 45

How do the P waves of junctional rhythms differ from the P waves of sinus rhythms?

Question 46

PJCs are ________ beats from the AV junction.

Question 47

P waves hidden inside the QRS are a hallmark of junctional rhythms originating ________ in the AV junction.

Question 48

A P wave that is upside down is called ________.

Question 49

Conduction to the ventricle is said to be ________ in junctional rhythms.

Question 50

Junctional rhythm has a heart rate of ________.

Question 51

Junctional tachycardia with a heart rate of 130 can result in ________ cardiac output.