Cardiovascular Health and CPR Guidelines

Front

What is the PR interval in an EKG?

Back

The PR interval is the time between the onset of atrial depolarization and the onset of ventricular depolarization, typically measured from the beginning of the P wave to the beginning of the QRS complex.

Front

How many seconds does 1 big box represent on an EKG?

Back

1 big box represents 0.2 seconds on an EKG.

Front

What does an EKG showing atrial flutter look like?

Back

An EKG showing atrial flutter typically has consistent narrow spikes with waves between that are sawtooth in appearance.

Front

What could cause a wandering baseline in an EKG tracing?

Back

A wandering baseline could be caused by defective or poorly attached electrode pads.

Front

What is AC artifact in an EKG?

Back

AC artifact refers to electrical interference that can distort the EKG tracing.

Front

What is the significance of the QRS complex in an EKG?

Back

The QRS complex represents ventricular depolarization, which is crucial for the heart's pumping action.

Front

What does the ST segment indicate in an EKG?

Back

The ST segment indicates the period between ventricular depolarization and repolarization, and changes can indicate ischemia or infarction.

Front

What is the normal range for the QT interval?

Back

The normal range for the QT interval is typically between 0.36 to 0.44 seconds, depending on the heart rate.

Front

What is the purpose of EKG leads?

Back

EKG leads are used to measure the electrical activity of the heart from different angles, providing a comprehensive view of heart function.

Front

What does a flat line on an EKG indicate?

Back

A flat line on an EKG may indicate asystole, which is the absence of electrical activity in the heart.