ECG Knowledge Quiz

What does an ECG trace?

• The heart's electrical activity

• The brain's electrical activity

• The muscle's electrical activity

• The liver's electrical activity

How many large squares equal one second on ECG paper?

• 2

• 3

• 5

• 10

Which part of the ECG indicates ventricular repolarization?

• P wave

• PR interval

• QRS complex

• T wave

What does the P wave in an ECG indicate?

• Ventricular depolarization

• Atrial depolarization

• Ventricular repolarization

• AV node delay

What is the normal range for a heart rate in beats per minute associated with a normal sinus rhythm?

• 40 to 60 beats per minute

• 60 to 100 beats per minute

• 100 to 120 beats per minute

• 120 to 140 beats per minute

What is the rate characteristic of atrial fibrillation?

• Constant rate

• Variable rate

• Slow rate

• Fast rate

What does atrial fibrillation cause in terms of blood flow?

• Efficient blood flow

• Inefficient blood flow

• Increased blood flow

• Decreased blood flow

Which of the following is a characteristic of the ECG in atrial fibrillation?

• Regular P waves

• No distinct P waves

• Regular QRS complex

• Distinct T waves

What is a common symptom of atrial fibrillation that affects energy levels?

• Increased energy

• Fatigue

• Hyperactivity

• Alertness

What is a common symptom of atrial fibrillation that affects the heart?

• Strong heartbeats

• Palpitations

• Slow heartbeats

• Regular heartbeats