Question 1

In Lead II, the junctional impulse that depolarizes the atria is traveling away from the positive electrode, thus producing a P wave that is _ .
A)inconsistent
B)inverted
C)biphasic
D)flat

Accepted Answer

In Lead II, the positive electrode is located on the left leg and the negative electrode on the right arm. The junctional impulse that depolarizes the atria is traveling away from the positive electrode, which is why the P wave in Lead II is expected to be negative (or inverted). Therefore, the best choice is B, inverted.

Question 2

In junctional rhythms, the P wave will always be:
A)missing.
B)inverted.
C)biphasic.
D)in front of the QRS.

Accepted Answer

B

Question 3

The rate for Junctional Escape Rhythm is bpm.
A)40- 60
B)60- 100
C)100- 120
D)20- 40

Accepted Answer

Junctional Escape Rhythm typically has a rate of 40-60 beats per minute.

Question 4

The rate for Junctional Tachycardia is bpm.
A)100- 120
B)40- 60
C)60- 100
D)100- 180

Accepted Answer

Junctional Tachycardia typically has a heart rate between 100-180 beats per minute.

Question 5

In a junctional rhythm, the pacemaking impulses originate in the:
A)atrial junction.
B)SA node.
C)bundle branches.
D)AV junction.

Accepted Answer

In a junctional rhythm, the pacemaking impulses originate from the AV junction. This can be seen on an ECG as a narrow QRS complex with no visible P wave, or a retrograde P wave after the QRS complex.

Question 6

Which of the following is NOT true about the P wave in all junctional rhythms?
A)It is unrelated to the QRS.
B)It can fall before of after the QRS.
C)It can be hidden in the QRS.
D)It will be inverted in Lead II.

Accepted Answer

In junctional rhythms, the P wave is related to the QRS complex, as it originates from the AV junction, which is close to the ventricles.

Question 7

The normal inherent rate of the AV junction is:
A)40- 60 bpm.
B)over 100 bpm.
C)20- 40 bpm.
D)60- 100 bpm.

Accepted Answer

The normal inherent rate of the AV junction is 20-40 bpm.

Question 8

Which of the following is NOT true about Junctional Tachycardia?
A)It is irregular in a pattern of grouped beating.
B)It has a narrow QRS.
C)It is a very rapid rhythm.
D)It has inverted P waves.

Accepted Answer

Junctional tachycardia is characterized by a rapid heart rate originating from the AV junction, leading to a narrow QRS complex due to the normal ventricular conduction system being used. It typically presents with a regular rhythm, not an irregular pattern or grouped beating, making option A incorrect. The P waves can be inverted, absent, or occur after the QRS complex due to the retrograde conduction from the AV junction to the atria.

Question 9

Which of the following arrhythmias is NOT in the category called Supraventricular Tachycardia?
A)Sinus Tachycardia
B)Accelerated Junctional Rhythm
C)Atrial Flutter
D)Junctional Tachycardia

Accepted Answer

The answer of Which of the following arrhythmias is NOT...

Question 10

A basic rule of electricity is that current flowing toward a positive electrode or away from a negative electrode)will produce a deflection that is:
A)flat.
B)strong.
C)upright.
D)retrograde.

Accepted Answer

The deflection produced by current flowing toward a positive electrode or away from a negative electrode will be upright, meaning it will move in a positive direction on the display screen. This is because the electron flow is moving away or toward the electrode, creating a potential difference that produces the deflection.

Question 11

In a Junctional Escape Rhythm, the QRS complex is sec.
A)less than 0.12
B)greater than 0.20
C)0.16- 0.20
D)0.12- 0.16

Accepted Answer

In a Junctional Escape Rhythm, the QRS complex is typically less than 0.12 seconds as it originates from the AV node and not the ventricles.

Question 12

When a rhythm is regular, with narrow QRS complexes, but firing at a rate so fast that you can't distinguish the P waves to identify it more accurately, you can call the rhythm:
A)supraventricular tachycardia.
B)rapid ventricular response.
C)tachycardia of unknown origin.
D)unidentifiable tachyarrhythmia.

Accepted Answer

Supraventricular tachycardia (SVT) is a regular rhythm with narrow QRS complexes that originates above the level of the ventricles. SVT can occur at rates so fast that P waves are not discernible, making it difficult to distinguish from other tachyarrhythmias.

Question 13

Which of the following terms DOES NOT apply to Premature Junctional Complex?
A)retrograde conduction
B)suppression
C)ectopic
D)irritability

Accepted Answer

Suppression is not a term that applies to Premature Junctional Complexes. Retrograde conduction, ectopic, and irritability are all terms that can be used to describe this type of arrhythmia.

Question 14

The mechanism in which the atria are depolarized with a backward flow of electricity is called conduction.
A)junctional
B)retrograde
C)backward
D)negative

Accepted Answer

The term "retrograde" means moving backwards, which is the most accurate description of the flow of electricity in the mechanism described in the statement. The other choices do not accurately describe the mechanism.

Question 15

A Premature Junctional Complex is a:
A)tachycardia.
B)pattern of grouped beating.
C)single ectopic beat.
D)regular arrhythmia.

Accepted Answer

A Premature Junctional Complex (PJC) is a single ectopic beat originating from the atrioventricular (AV) junction, occurring earlier than the next expected sinus beat. PJCs do not necessarily result in a tachycardia, a pattern of grouped beating or a regular arrhythmia.

Question 16

The rate for an Accelerated Junctional Rhythm is bpm.
A)40- 60
B)100- 180
C)60- 100
D)100- 120

Accepted Answer

Accelerated Junctional Rhythm typically has a rate of 60-100 beats per minute (bpm), which is faster than a normal junctional rhythm but slower than junctional tachycardia.

Quiz 6: Junctional Rhythms

In Lead II, the junctional impulse that depolarizes the atria is traveling away from the positive electrode, thus producing a P wave that is _ .

In junctional rhythms, the P wave will always be:

The rate for Junctional Escape Rhythm is bpm.

The rate for Junctional Tachycardia is bpm.

In a junctional rhythm, the pacemaking impulses originate in the:

Which of the following is NOT true about the P wave in all junctional rhythms?

The normal inherent rate of the AV junction is:

Which of the following is NOT true about Junctional Tachycardia?

Which of the following arrhythmias is NOT in the category called Supraventricular Tachycardia?

A basic rule of electricity is that current flowing toward a positive electrode or away from a negative electrode) will produce a deflection that is:

In a Junctional Escape Rhythm, the QRS complex is sec.

When a rhythm is regular, with narrow QRS complexes, but firing at a rate so fast that you can't distinguish the P waves to identify it more accurately, you can call the rhythm:

Which of the following terms DOES NOT apply to Premature Junctional Complex?

The mechanism in which the atria are depolarized with a backward flow of electricity is called conduction.

A Premature Junctional Complex is a:

The rate for an Accelerated Junctional Rhythm is bpm.