Deck 9: Rhythms Originating in the Av Junction

Question 1

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

Answer 1

C

Question 2

The heart rate in Figure 8 is closest to

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

Answer 2

A

Question 3

A junctional rhythm with a heart rate of 125 is called

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

Answer 3

D

Question 4

Junctional tachycardia without visible P waves is best called

A)Sinus tachycardia.
B)SVT.
C)Atrial tachycardia.
D)PJCs.

Question 5

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

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

Question 6

Junctional tachycardia has a heart rate of

A)40-60.
B)60-100.
C)Less than 40.
D)Greater than 100.

Question 7

Junctional tachycardia is associated with which medication toxicity?

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

Question 8

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 9

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 10

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 11

The AV node is located in the

A)Left atrium.
B)Right atrium.
C)Right ventricle.
D)Left ventricle.

Question 12

Accelerated junctional rhythm has a heart rate of

A)Less than 40.
B)60-100.
C)40-100.
D)Greater than 100.

Question 13

In Figure 8,the rhythm is

A)Sinus rhythm.
B)Junctional rhythm.
C)Atrial fibrillation.
D)Atrial tachycardia.

Question 14

The rhythm in Figure 9 is

A)Sinus rhythm.
B)Accelerated juctional rhythm.
C)Atrial fibrillation.
D)Junctional bradycardia.

Question 15

A premature beat arising from the AV junction is called a

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

Question 16

Junctional bradycardia has a heart rate of

A)Less than 40.
B)60-100.
C)40-100.
D)Greater than 100.

Question 17

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 18

Junctional rhythms originate in the

A)Sinoatrial junction.
B)Atrioventricular junction.
C)Sinoventricular junction.
D)Sinus node junction.

Question 19

PJCs are a result of

A)Escape.
B)Usurpation.
C)Sinus node failure.
D)Atrial failure.

Question 20

Treatment for the rhythm in Figure 8 could include ALL BUT

A)Atropine.
B)Oxygen.
C)Electrical shock to the heart.
D)No treatment.

Question 21

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

Question 22

"Retrograde" means forwards.

Question 23

Which junctional rhythm WOULD NOT be treated with atropine?

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

Question 24

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

Question 25

Low junctional rhythms originate low down in the ventricle.

Question 26

Electrical shock is used to treat frequent PJCs.

Question 27

"Antegrade" means backwards.

Question 28

Junctional bradycardia must have a heart rate less than 20.

Question 29

Junctional tachycardia is usually a result of escape.

Question 30

Junctional rhythms have retrograde conduction to the ventricles.

Question 31

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

Question 32

Junctional rhythm has no T waves.

Question 33

Conduction to the atria in junctional rhythms is said to be

A)Antegrade.
B)Retrograde.
C)Absent.
D)Silent.

Question 34

Junctional bradycardia is usually the result of usurpation.

Question 35

Junctional tachycardia has a heart rate greater than 100.

Question 36

Treatment for junctional tachycardia might include withholding digitalis administration.

Question 37

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 38

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 39

SVT and junctional tachycardia are similar in that

A)Both have inverted P waves.
B)Both can have hidden P waves.
C)Both have heart rates less than 40.
D)Both require electrical shock to the heart.

Question 40

All junctional rhythms are life-threatening.

Question 41

Junctional tachycardia has a heart rate _____.

Question 42

Conduction to the atria is said to be _____ in junctional rhythms.

Question 43

PJCs are _____beats from AV junction.

Question 44

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

Question 45

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

Question 46

A P wave that is upside down is called _____.

Question 47

Junctional rhythm has a heart rate _____.

Question 48

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