Question

identify this rhythm

• sinus rhythm with pvcs
• atrial fibrillation
• sinus bradycardia with pacs
• sinus arrhythmia
• sinus tachycardia

Explanation:

Analyze the rate and rhythm regularity

The R-R intervals are highly irregular, varying significantly across the strip (ranging from approximately 13 small boxes to over 25 small boxes).

Evaluate P-wave morphology and PR interval

Each QRS complex is preceded by a normal, upright P wave with a constant PR interval, indicating that the rhythm originates from the sinoatrial (SA) node.

Determine the cardiac rhythm

The presence of normal sinus P waves combined with a patterned irregularity (typically corresponding to respiratory phases) defines sinus arrhythmia.

Answer:

• Sinus Rhythm with PVC's
• Atrial Fibrillation
• Sinus Bradycardia with PAC's
• Sinus Arrhythmia (Correct answer)
• Sinus Tachycardia