Atrial Arrhythmias – Veterinary ECG Quiz

Cat (Recorded with Beecardia)

7 years • Male

Question

Which rhythm best fits this tracing?

Sinus rhythm

Sinus tachycardia

Atrial tachycardia

Atrial fibrillation

Dog (Recorded with Beecardia)

Female

Question

How would you classify the rhythm on this tracing?

Second-degree AV block

Sinus arrhythmia

Frequent atrial premature complexes

Atrial fibrillation

Dog (Recorded with Beecardia)

Male • Recent episode of acute congestive heart failure

Question

This rhythm looks organized at first glance. Which abnormality predominates in this recording?

Ventricular premature complexes

Atrial fibrillation

Atrial premature complexes

Sinus arrhythmia

Dog (Recorded with Beecardia)

Female

Question

Which rhythm diagnosis best fits this tracing?

Atrial fibrillation

Sinus arrhythmia

Ventricular premature complexes

Atrial premature complexes

Dog - Schnauzer (Recorded with Beecardia)

11 years • Male • Acute vomiting of frank blood and hematochezia after a course of NSAIDs following recent eyelid mass removal; tachycardia and a possible arrhythmia were noted on exam, with a markedly elevated PCV

Question

Which rhythm diagnosis best fits this tracing?

Supraventricular tachycardia

Sinus tachycardia

Atrial fibrillation

Normal sinus rhythm

Dog - Doberman (Recorded with Beecardia)

2 years • Female

Question

Which rhythm diagnosis best fits this tracing?

Atrial fibrillation

Re-entrant supraventricular tachycardia

Sinus arrhythmia

Frequent atrial premature complexes

Dog - GSD cross (Recorded with Beecardia)

13 years • Female • Reduced appetite, exercise intolerance, and mild coughing, with two collapse episodes on minimal exertion in the past 24 hours; tachycardia and an irregular rhythm noted on auscultation

Question

Which rhythm diagnosis best fits this tracing?

Sinus arrhythmia

Supraventricular tachycardia

Atrial premature complexes

Atrial fibrillation

Dog - French bulldog (Recorded with Beecardia)

8 years • Male • Currently receiving atenolol

Question

An occasional P wave here fails to reach the ventricles. Which finding in this tracing rules out a blocked atrial premature complex as the cause?

A premature, abnormally shaped P wave at the dropped beat

A constant PR interval with an abrupt dropped beat

Progressive PR lengthening before the dropped beat

P waves and QRS complexes marching independently

Dog - German Shepherd Dog (Recorded with Beecardia)

8 years • Male

Question

Elective surgery is planned for today. Based on this tracing, what is the most appropriate course of action?

Postpone anesthesia and arrange echocardiography before the procedure

Proceed as planned, with continuous ECG monitoring under anesthesia

Postpone anesthesia and screen with thoracic radiographs and cardiac biomarkers

Proceed as planned once rate-control therapy has been started

Dog (Recorded with Beecardia)

6 years • Male • Recheck following a previous diagnosis of SVT

Question

Given this dog's history of previous SVT, which interpretation best fits this recheck ECG?

A normal recording at a normal rate; recurrent supraventricular tachycardia is excluded

An isolated atrial premature complex with brief sinus pauses; not diagnostic alone, so continue monitoring

Atrial ectopy signalling recurrent atrial disease; antiarrhythmic therapy is indicated now

Sinus node disease driving the pauses; pursue this as the primary problem

Quiz: Atrial Arrhythmias

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Quiz: Atrial Arrhythmias

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