EKG Review Part 1

Front

What is the QRS Complex?

Back

The QRS Complex represents the electrical activity associated with the contraction of the ventricles in the heart.

Front

What is the P wave?

Back

The P wave represents the electrical activity associated with the contraction of the atria in the heart.

Front

Define Myocardial Infarction (MI).

Back

A Myocardial Infarction (MI) is a condition characterized by a lack of blood flow to the heart, resulting in myocardial tissue death.

Front

What is the T wave?

Back

The T wave represents the electrical activity associated with the relaxation of the ventricles in the heart.

Front

At what rate does the SA node fire?

Back

The SA node fires at a rate of 60-100 beats per minute.

Front

What does the ST Segment indicate?

Back

The ST Segment indicates the period between ventricular depolarization and repolarization.

Front

What is the significance of the P wave in an EKG?

Back

The P wave indicates atrial depolarization, which is the first step in the cardiac cycle.

Front

What can an elevated ST Segment indicate?

Back

An elevated ST Segment can indicate myocardial ischemia or injury.

Front

What is the normal duration of the QRS Complex?

Back

The normal duration of the QRS Complex is 0.06 to 0.10 seconds.

Front

What does a flat line on an EKG represent?

Back

A flat line on an EKG represents asystole, or a lack of electrical activity in the heart.