Question

identify this rhythm

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

Explanation:

Analyze the ECG strip characteristics

• P waves: Present, upright, uniform, and precede every QRS complex, indicating a sinus origin.
• PR interval: Constant and within normal limits.
• QRS complexes: Narrow and uniform.
• R-R intervals: Irregularly irregular or regularly irregular pattern (varying progressively), characteristic of respiratory-related variation.

Evaluate the multiple-choice options

• Sinus Rhythm with PVC's: Incorrect; there are no premature, wide, or bizarre QRS complexes.
• Atrial Fibrillation: Incorrect; distinct, uniform P waves are clearly visible before every QRS complex.
• Sinus Bradycardia with PAC's: Incorrect; there are no early ectopic P waves with different morphologies.
• Sinus Arrhythmia: Correct; the rhythm is sinus (normal P waves) but the R-R intervals vary significantly.
• Sinus Tachycardia: Incorrect; the heart rate is not elevated above 100 bpm.

Answer:

• (A) Sinus Rhythm with PVC's
• (B) Atrial Fibrillation
• (C) Sinus Bradycardia with PAC's
• (D) Sinus Arrhythmia (Correct answer)
• (E) Sinus Tachycardia