Understanding EKG Basics Quiz

Which part of the ECG waveform represents atrial depolarization?

• P wave

• QRS complex

• T wave

• U wave

What is the normal duration of the PR interval on an ECG?

• 0.04 to 0.10 seconds

• 0.12 to 0.20 seconds

• 0.20 to 0.30 seconds

• 0.30 to 0.40 seconds

Identify the arrhythmia characterized by a rapid, irregular heartbeat with no distinct P waves.

• Atrial flutter

• Atrial fibrillation

• Ventricular tachycardia

• Sinus bradycardia

Which of the following is a key step in preparing a patient for an ECG?

• Asking the patient to hold their breath

• Ensuring the patient is standing

• Cleaning the skin where electrodes will be placed

• Applying lotion to the skin

What does the QRS complex on an ECG represent?

• Atrial repolarization

• Ventricular depolarization

• Ventricular repolarization

• Atrial depolarization

Which arrhythmia is indicated by a sawtooth pattern on an ECG?

• Atrial flutter

• Ventricular fibrillation

• Sinus tachycardia

• Atrial fibrillation

What is the primary purpose of using a gel on ECG electrodes?

• To prevent skin irritation

• To improve electrical conductivity

• To secure the electrodes in place

• To cool the skin

Which part of the ECG waveform indicates ventricular repolarization?

• P wave

• QRS complex

• T wave

• U wave

Identify the arrhythmia characterized by a regular rhythm with a rate of more than 100 beats per minute.

• Sinus bradycardia

• Sinus tachycardia

• Atrial fibrillation

• Ventricular fibrillation

What is the first step in preparing a patient for an ECG?

• Placing the electrodes

• Explaining the procedure to the patient

• Turning on the ECG machine

• Adjusting the bed