Rhythm: Atrial and ventricular rhythms are regular

• Rate: Atrial and ventricular rates are each 72 beats/min
• P wave: Normal size and configuration
• PR interval: 0.20 second
• QRS complex: 0.10 second; normal size and configuration
• T wave: Normal configuration
• QT interval: 0.42 second
• Other: None
• Interpretation: Normal sinus rhythm