Question 1

An early premature)ectopic beat could be an indication of:&#10;A)impending bradycardia.&#10;B)sinus pacemaker.&#10;C)irritability.&#10;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:&#10;A)irregular in a repeating pattern.&#10;B)grossly irregular with no pattern.&#10;C)normal.&#10;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 &#34;Atrial Flutter, &#34; the atrial rate is usually in the range of bpm.&#10;A)100- 130&#10;B)250- 350&#10;C)200- 240&#10;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.&#10;A)greater than 0.20&#10;B)0.16- 0.20&#10;C)less than 0.12&#10;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:&#10;A)irregular R- R intervals.&#10;B)no discernible P waves.&#10;C)normal P waves.&#10;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:&#10;A)Atrial Tachycardia.&#10;B)Wandering Pacemaker.&#10;C)Atrial Flutter.&#10;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:&#10;A)atrial pathways.&#10;B)sino- atrial node.&#10;C)atrioventricular node.&#10;D)AV junction.

Accepted Answer

The answer of Atrial rhythms originate in the:&#10;A)atrial pathways.&#10;B)sino- atrial...

Question 8

It is very common for the P waves in Atrial Tachycardia to be:&#10;A)flat.&#10;B)hidden in the T wave.&#10;C)sawtooth.&#10;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:&#10;A)Atrial Fibrillation.&#10;B)Atrial Flutter.&#10;C)Sinus Tachycardia.&#10;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?&#10;A)It may dip below the isoelectric line.&#10;B)It may be diphasic.&#10;C)It can be flattened or peaked.&#10;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:&#10;A)uncontrolled.&#10;B)runaway.&#10;C)enhanced.&#10;D)wandering.

Accepted Answer

The answer of In Atrial Fibrillation, when the ventricular rate...

Question 12

The rhythm in which the atrial waves are seen as a sawtooth pattern is called:&#10;A)Premature Atrial Complex.&#10;B)Atrial Fibrillation.&#10;C)Atrial Flutter.&#10;D)Atrial Tachycardia.

Accepted Answer

The answer of The rhythm in which the atrial waves...

Question 13

The atrial rate in Atrial Fibrillation is bpm.&#10;A)greater than 350&#10;B)250- 350&#10;C)less than 200&#10;D)200- 250

Accepted Answer

The answer of The atrial rate in Atrial Fibrillation is...

Question 14

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

Accepted Answer

The answer of The ventricular rate for PACs is defined...

Question 15

A Premature Atrial Complex is:&#10;A)an entire rhythm.&#10;B)a single ectopic beat.&#10;C)a series of complexes.&#10;D)a pattern of ectopic beats.

Accepted Answer

The answer of A Premature Atrial Complex is:&#10;A)an entire rhythm.&#10;B)a...

Question 16

The QRS complex in all atrial rhythms is expected to be:&#10;A)normal.&#10;B)inverted.&#10;C)distorted by P waves.&#10;D)earlier than usual.

Accepted Answer

The answer of The QRS complex in all atrial rhythms...

Question 17

A single beat that arises from a focus outside of the SA node is called an):&#10;A)Atrial Tachycardia.&#10;B)ectopic beat.&#10;C)compensatory pause.&#10;D)Premature Ventricular Complex.

Accepted Answer

The answer of A single beat that arises from a...

Question 18

When you encounter a rhythm that is irregular with no mappable P waves, you should suspect:&#10;A)Atrial Tachycardia.&#10;B)Wandering Pacemaker.&#10;C)Atrial Flutter.&#10;D)Atrial Fibrillation.

Accepted Answer

The answer of When you encounter a rhythm that is...

Question 19

In Wandering Pacemaker, the heart's pacemaker site shifts between:&#10;A)SA node and atria.&#10;B)atria and ventricles.&#10;C)SA node and AV node.&#10;D)AV node and ventricles.

Accepted Answer

The answer of In Wandering Pacemaker, the heart's pacemaker site...

Question 20

Atrial Tachycardia usually has a rate of bpm.&#10;A)100- 150&#10;B)250- 300&#10;C)150- 250&#10;D)60- 100

Accepted Answer

The answer of Atrial Tachycardia usually has a rate of...

Deck 5: Atrial Rhythms