EKG Review Part 1

Front

What is the normal time interval for the P-R segment?

Back

0.12-0.20 seconds (3-5 small boxes)

Front

Define QRS Complex.

Back

The QRS complex represents ventricular depolarization and contraction.

Front

What is a Myocardial Infarction (MI)?

Back

A lack of blood flow to the heart resulting in myocardial tissue death.

Front

What does the P wave represent?

Back

Atrial depolarization and contraction.

Front

Define P wave.

Back

The P wave represents the electrical activity associated with atrial depolarization.

Front

What is the significance of the ST Segment?

Back

The ST segment represents the period between ventricular depolarization and repolarization.

Front

What does the T wave represent?

Back

The T wave represents ventricular repolarization.

Front

What is the normal heart rate range for adults?

Back

60-100 beats per minute.

Front

What is the purpose of an EKG?

Back

An EKG measures the electrical activity of the heart.

Front

What does a flat line on an EKG indicate?

Back

It may indicate cardiac arrest or asystole.