Fundamentals of Electrocardiography Quiz

Explore essential ECG concepts with 12 questions. Identify atrial depolarization, ventricular components, rhythm abnormalities, and more!

Practice Learn Test

Which of the following represents the depolarization of the atria?

P wave

QRS complex

T wave

U wave

Which component of the ECG represents ventricular depolarization?

P wave

QRS complex

T wave

U wave

Which of the following is NOT a common cause of artifact in an ECG recording?

Patient movement

Electrode placement

Equipment malfunction

Electromagnetic interference

What is the typical duration of the QRS complex in a normal ECG?

Less than 0.04 seconds

0.04 to 0.10 seconds

More than 0.10 seconds

Varies depending on the lead

Which of the following is a common characteristic of a normal sinus rhythm?

Heart rate < 60 bpm

PR interval > 0.20 seconds

Regular rhythm

Inverted T wave

In a normal ECG, what does the T wave represent?

Atrial repolarization

Atrial depolarization

Ventricular repolarization

Ventricular depolarization

Which of the following leads is often referred to as the 'infarction lead'?

Lead I

Lead II

Lead III

Lead aVR

What does an elevated ST segment on an ECG indicate?

Atrial fibrillation

Myocardial infarction

Sinus bradycardia

Ventricular tachycardia

Which lead is commonly used to assess for right ventricular infarction?

Lead I

Lead II

Lead V1

Lead V4R

#10

What does a prolonged PR interval on an ECG suggest?

Atrioventricular block

Ventricular hypertrophy

Supraventricular tachycardia

Ventricular fibrillation

#11

In a 12-lead ECG, which leads provide information about the lateral wall of the left ventricle?

Lead I, II, III

Lead V1, V2

Lead V3, V4

Lead V5, V6

#12

What does an absence of QRS complexes on an ECG indicate?

Asystole