Rhythm: Atrial and ventricular—irregular

• Rate: 40 beats/min
• P wave: Normal configuration except inverted on second complex
• PR interval: 0.16 second on beat 1, 3, and 4; 0.08 second on beat 2
• QRS complex: 0.08 second
• T wave: Tall and peaked
• QT interval: 0.48 second
• Other: Second beat conducted early
• Interpretation: Sinus bradycardia with PJCs