EKG Basics Flashcard

Front

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

Back

To indicate atrial depolarization.

Front

What does a flat isoelectric line in an EKG indicate?

Back

No electrical activity.

Front

Where is the SA node located?

Back

Right atrium near the entry of the superior vena cava.

Front

What is the main vector of atrial depolarization in an EKG?

Back

Downward and leftward towards the AV node.

Front

What is the function of the AV node in an EKG?

Back

To slow down the conduction of electrical activity.

Front

What does the QRS complex represent in an EKG?

Back

Ventricular depolarization.

Front

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

Back

It represents ventricular repolarization.

Front

What does the PR interval indicate in an EKG?

Back

The time taken for electrical impulses to travel from the atria to the ventricles.

Front

What is the normal range for heart rate as measured by EKG?

Back

60 to 100 beats per minute.

Front

What does ST segment elevation indicate?

Back

Possible myocardial infarction (heart attack).