EKG

Question 1

P-wave

Answer 1

Atrial depolarization

Question 2

PR Interval

Answer 2

• Conduction from SA node to AV node

- Normal = .12 - .20 seconds (3 to 5 small boxes)

Question 3

QRS Complex

Answer 3

• Ventricular depolarization + atrial repolarization

- Normal = .06 - .10 seconds (1.5-2.5 small boxes)

Question 4

QT Interval

Answer 4

• Time for both ventricular depolarization + repolarization

- Normal = .20 - .40 seconds depending on HR (5 to 10 small boxes)

Question 5

ST segment

Answer 5

Isoelectric period following QRS

Question 6

T-wave

Answer 6

Ventricular repolarization