Question 1

The rate for Junctional Escape Rhythm is ________ bpm.&#10;A)20-40&#10;B)40-60&#10;C)60-100&#10;D)100-120

Accepted Answer

Junctional escape rhythm typically has a rate of 40-60 beats per minute (bpm). This rhythm originates from the AV junction when the sinoatrial (SA) node fails to initiate the heartbeat or the signal fails to propagate, causing the AV node to take over as the pacemaker.

Question 2

The mechanism in which the atria are depolarized with a backward flow of electricity is called ________ conduction.&#10;A)retrograde&#10;B)negative&#10;C)backward&#10;D)junctional

Accepted Answer

Retrograde conduction occurs when the electrical impulse in the heart travels in a backward direction, that is, from the ventricles to the atria (opposite to the normal direction of conduction). This can result in the depolarization of the atria via a backward flow of electricity.

Question 3

In Lead II,the junctional impulse that depolarizes the atria is traveling away from the positive electrode,thus producing a P wave that is:&#10;A)flat.&#10;B)biphasic.&#10;C)inverted.&#10;D)inconsistent.

Accepted Answer

In Lead II, the positive electrode is located on the right arm, and the negative electrode is located on the left leg. Thus, the depolarization of the atria (which produces the P wave) is traveling away from the positive electrode, resulting in an inverted P wave.

Question 4

Which of the following terms does NOT apply to Premature Junctional Complex?&#10;A)Ectopic&#10;B)Retrograde conduction&#10;C)Irritability&#10;D)Suppression

Accepted Answer

Premature Junctional Complexes (PJC) are ectopic, meaning they originate from a location in the heart other than the SA node. They can also exhibit retrograde conduction, where impulses travel back up the AV node towards the atria. PJC are a result of irritability in the AV junction, causing premature contractions. However, there is no suppression associated with PJC, as they are an active impulse in the heart rhythm.

Question 5

A basic rule of electricity is that current flowing toward a positive electrode (or away from a negative electrode)produces a deflection that is:&#10;A)upright.&#10;B)retrograde.&#10;C)flat.&#10;D)strong.

Accepted Answer

This is known as the "right-hand rule" and is a fundamental principle in electromagnetism. Current flowing toward a positive electrode produces a deflection that is upright, while current flowing away from a positive electrode produces a deflection that is inverted.

Question 6

In a junctional rhythm,the pacemaking impulses originate in the:&#10;A)bundle branches.&#10;B)atrial junction.&#10;C)AV junction.&#10;D)SA node.

Accepted Answer

In a junctional rhythm, the pacemaking impulses originate in the AV junction.

Question 7

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:&#10;A)supraventricular tachycardia.&#10;B)rapid ventricular response.&#10;C)unidentifiable tachyarrhythmia.&#10;D)tachycardia of unknown origin.

Accepted Answer

Supraventricular tachycardia (SVT) is a rapid rhythm originating from above the ventricles, typically with narrow QRS complexes. In some cases, the P waves may not be visible due to the fast rate of firing. Therefore, SVT is the most likely diagnosis in this scenario.

Question 8

The rate for an Accelerated Junctional Rhythm is ________ bpm.&#10;A)40-60&#10;B)60-100&#10;C)100-120&#10;D)100-180

Accepted Answer

Accelerated Junctional Rhythm typically has a rate of 60-100 beats per minute (bpm). This rhythm originates from the AV junction, and when it exceeds the normal junctional rhythm rate of 40-60 bpm but is less than 100 bpm, it is termed as accelerated.

Question 9

A Premature Junctional Complex is a:&#10;A)pattern of grouped beating.&#10;B)tachycardia.&#10;C)regular arrhythmia.&#10;D)single ectopic beat.

Accepted Answer

A premature junctional complex (PJC) is a type of arrhythmia characterized by a single ectopic beat originating in the atrioventricular junction. It occurs when the electrical impulse is generated from a location other than the sinus node and can disrupt the normal heart rhythm. PJCs can occur sporadically, but may also indicate underlying heart disease or electrolyte imbalances.

Question 10

In junctional rhythms,the P wave will always be:&#10;A)in front of the QRS.&#10;B)missing.&#10;C)biphasic.&#10;D)inverted.

Accepted Answer

In junctional rhythms, the P wave is often inverted, as the electrical activity is initiated near the AV node rather than the sinus node.

Question 11

The normal inherent rate of the AV junction is:&#10;A)20-40 bpm.&#10;B)40-60 bpm.&#10;C)60-100 bpm.&#10;D)over 100 bpm.

Accepted Answer

The answer of The normal inherent rate of the AV...

Question 12

Which of the following is NOT true about Junctional Tachycardia?&#10;A)It is irregular in a pattern of grouped beating.&#10;B)It has inverted P waves.&#10;C)It has a narrow QRS.&#10;D)It is a very rapid rhythm.

Accepted Answer

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

Question 13

The rate for Junctional Tachycardia is ________ bpm.&#10;A)40-60&#10;B)60-100&#10;C)100-120&#10;D)100-180

Accepted Answer

The answer of The rate for Junctional Tachycardia is ________...

Question 14

Which of the following arrhythmias is NOT in the category called Supraventricular Tachycardia?&#10;A)Sinus Tachycardia&#10;B)Atrial Flutter&#10;C)Accelerated Junctional Rhythm&#10;D)Junctional Tachycardia

Accepted Answer

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

Question 15

Which of the following is NOT true about the P wave in all junctional rhythms?&#10;A)It can fall before or after the QRS.&#10;B)It will be inverted in Lead II.&#10;C)It is unrelated to the QRS.&#10;D)It can be hidden in the QRS.

Accepted Answer

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

Question 16

In a Junctional Escape Rhythm,the QRS complex is ________ sec.&#10;A)less than 0.12&#10;B)0.12-0.16&#10;C)0.16-0.20&#10;D)greater than 0.20

Accepted Answer

The answer of In a Junctional Escape Rhythm,the QRS complex...

Deck 6: Junctional Rhythms