EKG Review!

Front

What is a heart attack?

Back

A heart attack occurs when blood flow to a part of the heart is blocked, causing damage to the heart muscle.

Front

What is cardiac arrest?

Back

Cardiac arrest is a sudden loss of heart function, leading to the cessation of blood circulation and breathing.

Front

True or False: A heart attack can cause a cardiac arrest.

Back

True

Front

What does the P wave represent in an EKG?

Back

The P wave represents atrial depolarization, which is the electrical activity associated with the contraction of the atria.

Front

What does the T wave represent in an EKG?

Back

The T wave represents ventricular repolarization, which is the recovery phase of the ventricles after contraction.

Front

What is the QRS complex?

Back

The QRS complex represents ventricular depolarization, which is the electrical activity that triggers the contraction of the ventricles.

Front

What is the normal firing rate of the SA node?

Back

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

Front

How do you calculate heart rate using the 300 method?

Back

Find an R wave that lands on a line, count the large boxes to the right, and divide by 300.

Front

What is the ST segment?

Back

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

Front

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

Back

The R wave is the tallest wave in the QRS complex and indicates the main electrical impulse that triggers ventricular contraction.