How to Read an Electrocardiogram (ECG/EKG)

In this episode, Leslie Samuel explains how to read an electrocardiogram (ECG or EKG). The video covers the basics of ECG, its purpose, and how it records the heart's electrical activity. Leslie discusses the components of an ECG, including the P wave, QRS complex, and T wave, and explains their significance in heart function. The video also touches on the U wave and its potential implications. Viewers are encouraged to visit interactive-biology.com for more resources.

What is the primary purpose of an electrocardiogram?

• To assess lung function

• To monitor brain waves

• To measure blood pressure

• To record the electrical activity of the heart

Which part of the ECG represents the depolarization of the atria?

• QRS complex

• T wave

• U wave

• P wave

What does the QRS complex indicate in an ECG?

• Repolarization of the atria

• Depolarization of the ventricles

• Repolarization of the ventricles

• Depolarization of the Purkinje fibers

Why are the signals from the ventricles larger than those from the atria in an ECG?

• The atria have more cells depolarizing

• The ventricles have more cells depolarizing

• The ventricles are smaller than the atria

• The atria are larger than the ventricles

What is the T wave associated with in an ECG?

• Depolarization of the ventricles

• Depolarization of the atria

• Repolarization of the atria

• Repolarization of the ventricles

What is one possible explanation for the U wave in an ECG?

• Repolarization of the ventricles

• Repolarization of the atria

• Depolarization of the ventricles

• Repolarization of the Purkinje fibers

Where can you find more information on depolarization and repolarization?

• Episodes 46 and 47

• Episodes 9 and 10

• Episodes 1 and 2

• Episodes 20 and 21