ECG Lesson

Open Ended

Describe how an electrocardiogram (ECG/EKG) can provide information about the heart's conduction system.

Multiple Choice

Why is it important to study the electrical activity of the heart using an ECG/EKG?

• To diagnose lung disease and monitor heart health

• To measure blood pressure

• To diagnose heart diseases and monitor heart health

• To assess kidney function

Open Ended

Explain the difference between depolarization and repolarization in the context of heart muscle activity.

Multiple Choice

Which part of the heart's electrical activity does the P wave on an EKG represent?

• Ventricular repolarization

• Ventricular depolarization

• Atrial repolarization

• Atrial depolarization

Multiple Choice

What happens to the impulse at the AV node during the P-Q (P-R) interval?

• It is delayed

• It speeds up

• It stops completely

• It reverses direction

Multiple Select

Which of the following events occur during the QRS complex?

• Ventricular depolarization

• Atrial repolarization

• Atrial depolarization

• Ventricular repolarization

Open Ended

Describe the sequence of electrical events in the heart as represented by the ECG, starting from the P wave to the S-T segment.

Multiple Choice

What does the T wave on an ECG represent in terms of ventricular activity?

• Ventricular depolarization

• Atrial repolarization

• Ventricular repolarization

• Atrial depolarization

Open Ended

Explain the sequence of events that occur in the ventricles from the beginning (QRS) to the completion of repolarization (T) as shown in the ECG and heart diagrams.

Open Ended

How do you think the information from an ECG can help doctors in diagnosing heart conditions?

Multiple Choice

What does an ECG (or EKG) measure in the heart?

• Blood pressure and electricity in the heart.

• Electrical activity of the heart's conduction system

• Oxygen levels in the blood

• Heart valve function