Question 1

An early premature)ectopic beat could be an indication of:
A)impending bradycardia.
B)sinus pacemaker.
C)irritability.
D)escape mechanism.

Accepted Answer

An early premature or ectopic beat is an abnormal heartbeat that occurs earlier than expected. This can be a sign of irritability in the heart's electrical system, which may lead to more serious arrhythmias. It is not a sign of impending bradycardia or sinus pacemaker activity, nor is it necessarily an escape mechanism. Therefore, the best choice is C - irritability.

Question 2

In Atrial Fibrillation, the rhythm is:
A)irregular in a repeating pattern.
B)grossly irregular with no pattern.
C)normal.
D)very reliably regular.

Accepted Answer

Atrial Fibrillation is characterized by an irregular and often rapid heartbeat with no discernible pattern. This is why it is often described as "grossly irregular."

Question 3

In the rhythm called "Atrial Flutter, " the atrial rate is usually in the range of bpm.
A)100- 130
B)250- 350
C)200- 240
D)60- 100

Accepted Answer

Atrial Flutter is characterized by a rapid and regular atrial rhythm that ranges from 250-350 bpm.

Question 4

The QRS in Atrial Fibrillation should be sec.
A)greater than 0.20
B)0.16- 0.20
C)less than 0.12
D)0.12- 0.16

Accepted Answer

In Atrial Fibrillation, the ventricular rate is usually irregular and rapid, and the QRS duration is typically less than 0.12 seconds. This is because the electrical impulses are not being conducted through the normal pathway of the AV node, but rather through multiple, random pathways. Therefore, the correct choice is C, which states that the QRS should be less than 0.12 seconds.

Question 5

Atrial Fibrillation has:
A)irregular R- R intervals.
B)no discernible P waves.
C)normal P waves.
D)wide QRS complexes.

Accepted Answer

Atrial fibrillation is characterized by an irregularly irregular rhythm and the absence of discernible P waves. QRS complexes are typically narrow in AF.

Question 6

An atrial arrhythmia that occurs when the pacemaker role switches from the SA node to the atria and back again is called:
A)Atrial Tachycardia.
B)Wandering Pacemaker.
C)Atrial Flutter.
D)Atrial Fibrillation.

Accepted Answer

This is known as a "Wandering Pacemaker" where the pace of the heartbeat alternates between the SA node and the atria. Atrial Tachycardia is a fast heart rate originating from the atria, Atrial Flutter is a rapid and regular contraction of the atria, and Atrial Fibrillation is an irregular and often fast heartbeat originating from multiple areas in the atria. These arrhythmias do not involve a switch between the pacemaker roles of the SA node and the atria.

Question 7

Atrial rhythms originate in the:
A)atrial pathways.
B)sino- atrial node.
C)atrioventricular node.
D)AV junction.

Accepted Answer

The answer of Atrial rhythms originate in the:
A)atrial pathways.
B)sino- atrial...

Question 8

It is very common for the P waves in Atrial Tachycardia to be:
A)flat.
B)hidden in the T wave.
C)sawtooth.
D)irregular.

Accepted Answer

In atrial tachycardia, the P waves can often be hidden in the T wave due to the rapid heart rate, making it difficult to distinguish them on an ECG.

Question 9

The rhythm in which ALL atrial activity is depicted as chaotic undulations of the baseline is called:
A)Atrial Fibrillation.
B)Atrial Flutter.
C)Sinus Tachycardia.
D)Atrial Tachycardia.

Accepted Answer

Chaotic undulations of the baseline is a characteristic feature of Atrial Fibrillation, where the atria quiver instead of contracting in a coordinated manner, leading to irregular and fast heartbeats.

Question 10

Which one of the following does NOT describe an atrial P wave?
A)It may dip below the isoelectric line.
B)It may be diphasic.
C)It can be flattened or peaked.
D)It is uniformly rounded.

Accepted Answer

Atrial P waves can be diphasic (positive and negative), flattened, or peaked. They may also dip below the isoelectric line (baseline) due to the direction of atrial depolarization. However, they should not be uniformly rounded as this would suggest that the electrical impulse is not originating from the sinoatrial node, but rather from a different location in the atria.

Question 11

In Atrial Fibrillation, when the ventricular rate is over 100 bpm, it is said to be:
A)uncontrolled.
B)runaway.
C)enhanced.
D)wandering.

Accepted Answer

Atrial fibrillation with a ventricular rate over 100 bpm is considered uncontrolled because at this rate, the heart is not able to effectively pump blood and maintain normal cardiac output. This can lead to symptoms such as palpitations, shortness of breath, and dizziness, and can also increase the risk of complications such as stroke and heart failure. Therefore, it is important to control the ventricular rate in patients with atrial fibrillation.

Question 12

The rhythm in which the atrial waves are seen as a sawtooth pattern is called:
A)Premature Atrial Complex.
B)Atrial Fibrillation.
C)Atrial Flutter.
D)Atrial Tachycardia.

Accepted Answer

The sawtooth pattern refers to the characteristic appearance of atrial flutter on an electrocardiogram (ECG). It is caused by a regular, rapid atrial rhythm with a distinct flutter wave pattern. Premature atrial complex (PAC), atrial fibrillation, and atrial tachycardia do not have this sawtooth pattern on an ECG.

Question 13

The atrial rate in Atrial Fibrillation is bpm.
A)greater than 350
B)250- 350
C)less than 200
D)200- 250

Accepted Answer

The atrial rate in Atrial Fibrillation is typically greater than 350 beats per minute, reflecting the rapid and irregular electrical activity in the atria.

Question 14

The ventricular rate for PACs is defined as:
A)depends on underlying rhythm.
B)less than 10 bpm.
C)greater than 100 bpm.
D)60- 100 bpm.

Accepted Answer

PACs (Premature Atrial Contractions) are ectopic beats originating from an ectopic focus in the atria. The ventricular rate in the presence of PACs depends on the underlying rhythm because PACs themselves do not set the ventricular rate; they merely interrupt it.

Question 15

A Premature Atrial Complex is:
A)an entire rhythm.
B)a single ectopic beat.
C)a series of complexes.
D)a pattern of ectopic beats.

Accepted Answer

Premature Atrial Complex (PAC) refers to a single ectopic beat originating from the atria, occurring earlier than the next expected sinus beat. It is not an entire rhythm, a series of complexes, or a pattern of ectopic beats.

Question 16

The QRS complex in all atrial rhythms is expected to be:
A)normal.
B)inverted.
C)distorted by P waves.
D)earlier than usual.

Accepted Answer

The QRS complex in all atrial rhythms is expected to be normal because it represents ventricular depolarization, which should occur regardless of the origin of the electrical impulse that initiated it.

Question 17

A single beat that arises from a focus outside of the SA node is called an):
A)Atrial Tachycardia.
B)ectopic beat.
C)compensatory pause.
D)Premature Ventricular Complex.

Accepted Answer

An ectopic beat is a single electrical impulse that arises from a focus outside of the SA node, which can cause an irregular heart rhythm. Atrial tachycardia involves a faster than normal heart rate originating in the atria. A compensatory pause occurs after a premature beat, where the heart pauses slightly longer than normal to allow time for the next normal beat to occur. A premature ventricular complex is an early heartbeat that originates from a ventricle instead of the SA node.

Question 18

When you encounter a rhythm that is irregular with no mappable P waves, you should suspect:
A)Atrial Tachycardia.
B)Wandering Pacemaker.
C)Atrial Flutter.
D)Atrial Fibrillation.

Accepted Answer

Atrial fibrillation is characterized by an irregular rhythm with no discernible P waves. It is commonly seen in older adults and those with underlying heart disease.

Question 19

In Wandering Pacemaker, the heart's pacemaker site shifts between:
A)SA node and atria.
B)atria and ventricles.
C)SA node and AV node.
D)AV node and ventricles.

Accepted Answer

In wandering pacemaker, the pacemaker site shifts between the SA node and the AV node, but not into the atria or ventricles. Therefore, the correct choice is C, which lists the SA node and AV node as the shifting pacemaker sites.

Question 20

Atrial Tachycardia usually has a rate of bpm.
A)100- 150
B)250- 300
C)150- 250
D)60- 100

Accepted Answer

Atrial tachycardia is characterized by a heart rate of 150-250 beats per minute.

Quiz 5: Atrial Rhythms

An early premature) ectopic beat could be an indication of:

In Atrial Fibrillation, the rhythm is:

In the rhythm called "Atrial Flutter, " the atrial rate is usually in the range of bpm.

The QRS in Atrial Fibrillation should be sec.

Atrial Fibrillation has:

An atrial arrhythmia that occurs when the pacemaker role switches from the SA node to the atria and back again is called:

Atrial rhythms originate in the:

It is very common for the P waves in Atrial Tachycardia to be:

The rhythm in which ALL atrial activity is depicted as chaotic undulations of the baseline is called:

Which one of the following does NOT describe an atrial P wave?

In Atrial Fibrillation, when the ventricular rate is over 100 bpm, it is said to be:

The rhythm in which the atrial waves are seen as a sawtooth pattern is called:

The atrial rate in Atrial Fibrillation is bpm.

The ventricular rate for PACs is defined as:

A Premature Atrial Complex is:

The QRS complex in all atrial rhythms is expected to be:

A single beat that arises from a focus outside of the SA node is called an) :

When you encounter a rhythm that is irregular with no mappable P waves, you should suspect:

In Wandering Pacemaker, the heart's pacemaker site shifts between:

Atrial Tachycardia usually has a rate of bpm.