Wandering Atrial Pacemaker

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Questions and Answers

Where do atrial rhythms originate?

Within the AV node
Within the atria, outside the SA node (correct)
Within the ventricles
Within the Purkinje fibers

What is a key characteristic of Wandering Atrial Pacemaker (WAP)?

Fixed P-wave morphology
Varying P-wave morphology (correct)
Consistent PR interval
Rapid ventricular rate

What is the typical heart rate in Wandering Atrial Pacemaker (WAP)?

Usually less than 100 bpm (correct)
Usually between 100-120 bpm
Usually greater than 150 bpm
Always above 180 bpm

What is the typical rhythm associated with Wandering Atrial Pacemaker (WAP)?

Slightly irregular (C) Signup and view all the answers

What is a common cause of Wandering Atrial Pacemaker (WAP)?

Increased vagal tone (D) Signup and view all the answers

What defines ectopic atrial rhythms?

Originating from an ectopic focus in the atria (C) Signup and view all the answers

What is a typical characteristic of P waves in ectopic atrial rhythms?

May be abnormal in shape (A) Signup and view all the answers

What characterizes the rhythm in ectopic atrial rhythms?

Can be regular or irregular (D) Signup and view all the answers

From where does a Premature Atrial Complex (PAC) originate?

Ectopic atrial focus (D) Signup and view all the answers

What typically happens to the rhythm during Premature Atrial Complexes (PACs)?

Becomes irregular (C) Signup and view all the answers

What effect do stimulants have on Premature Atrial Complexes (PACs)?

Increase frequency (D) Signup and view all the answers

What is the rate range for Atrial Tachycardia?

150-250 bpm (A) Signup and view all the answers

What best describes the rhythm in Atrial Tachycardia?

Regular (B) Signup and view all the answers

What is a key characteristic of P waves in Atrial Tachycardia?

May be hidden in preceding T waves (B) Signup and view all the answers

Which of the following best describes Atrial Flutter?

Rapid, regular atrial contractions (D) Signup and view all the answers

What is the atrial rate range in Atrial Flutter?

250-350 bpm (D) Signup and view all the answers

What is a characteristic ECG feature of Atrial Flutter?

Sawtooth pattern (B) Signup and view all the answers

What best describes the atrial activity in Atrial Fibrillation (AFib)?

Multiple ectopic foci firing chaotically (D) Signup and view all the answers

What happens to the P waves in Atrial Fibrillation (AFib)?

Are replaced by fibrillatory waves (A) Signup and view all the answers

What is a significant clinical concern associated with Atrial Fibrillation (AFib)?

High risk of stroke (C) Signup and view all the answers

Flashcards

Atrial Rhythms

Rhythms originating outside the SA node, within the atria, caused by ectopic pacemakers or abnormal conduction pathways.

Wandering Atrial Pacemaker (WAP)

A rhythm where the pacemaker shifts between the SA node, atria, and/or AV junction, creating varying P-wave shapes.