Question

identify this rhythm

sinus tachycardia with st segment depression
atrial fibrillation
junctional tachycardia
idioventricular rhythm
atrial flutter

Explanation:

Analyze atrial activity

The baseline shows rapid, regular, sawtooth-shaped waves (F-waves) instead of normal P-waves.

Determine ventricular rate and regularity

The QRS complexes are narrow and occur at regular intervals, indicating a consistent conduction ratio (approximately 4:1 or 3:1 block).

Match with diagnostic criteria

The characteristic "sawtooth" baseline at a rapid atrial rate is the hallmark of atrial flutter.

Answer:

• Sinus tachycardia with ST segment depression
• Atrial fibrillation
• Junctional tachycardia
• Idioventricular rhythm
• Atrial flutter (Correct answer)