EKG Basics Flashcard

Front

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

Back

To indicate atrial depolarization.

Front

What is the name of the interval from the beginning of the P wave to the end of the PR segment?

Back

PR interval.

Front

What does a downward deflection in an EKG indicate?

Back

Negative charges moving away from the positive electrode.

Front

What is the name of the segment between the end of the P wave and the start of the QRS complex?

Back

PR segment.

Front

What does a sinus P wave indicate in an EKG?

Back

Atrial depolarization generated by the SA node.

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 QT interval measure in an EKG?

Back

The time from the start of the Q wave to the end of the T wave.

Front

What is the normal duration of the PR interval?

Back

0.12 to 0.20 seconds.

Front

What does the ST segment represent in an EKG?

Back

The period between ventricular depolarization and repolarization.