Rhythm: Regular atrial and ventricular rhythms

• Rate: Atrial rates are 100 beats/min; ventricular rates are 50 beats/min
• P wave: Normal size and configuration
• PR interval: 0.14 second
• QRS complex: 0.06 second
• T wave: Normal configuration
• QT interval: 0.44 second
• Other: Two P waves for each QRS
• Interpretation: Type II second-degree AV block