EKG Interpretation

How long does a large box represent?

• 0.20 seconds

• 0.30 seconds

• 0.12 seconds

• 0.16 seconds

What does the P wave represent?

• Atrial depolarization

• Atrial repolarization

• Ventricular depolarization

• Ventricular repolarization

What is considered a normal PR interval?

• 0.12-0.20 seconds

• 0.12-0.24 seconds

• 0.12-0.20 minutes

• 0.06-0.12 seconds

What is happening during the ST interval?

• Ventricles pumping blood

• Atria pumping blood

• Atrial repolarization

• Ventricular repolarization