Arrhythmias Quiz for EKG Students

What is the normal heart rate range for a sinus rhythm in adults?

• 40-60 beats per minute

• 60-100 beats per minute

• 100-120 beats per minute

• 120-140 beats per minute

Which of the following is a characteristic feature of atrial fibrillation on an ECG?

• Regular P waves

• Absence of P waves

• Inverted P waves

• Tall, peaked P waves

In a junctional rhythm, where does the electrical impulse originate?

• Sinoatrial node

• Atrioventricular node

• Purkinje fibers

• Bundle of His

Which arrhythmia is characterized by a "sawtooth" pattern on an ECG?

• Atrial flutter

• Ventricular tachycardia

• Sinus bradycardia

• Junctional escape rhythm

What is the primary difference between sinus tachycardia and sinus bradycardia?

• The presence of P waves

• The rate of the heartbeats

• The shape of the QRS complex

• The length of the PR interval

How can you differentiate between ventricular tachycardia and ventricular fibrillation on an ECG?

• Ventricular tachycardia has a regular rhythm, while ventricular fibrillation does not

• Ventricular fibrillation has a regular rhythm, while ventricular tachycardia does not

• Both have regular rhythms

• Both have irregular rhythms

Which of the following arrhythmias is most likely to cause a sudden drop in blood pressure?

• Sinus arrhythmia

• Atrial flutter

• Ventricular fibrillation

• Junctional rhythm

What is the typical treatment for a patient with atrial fibrillation to prevent stroke?

• Beta-blockers

• Anticoagulants

• Calcium channel blockers

• Diuretics

Which of the following is a common cause of sinus bradycardia?

• Fever

• Exercise

• Hypothyroidism

• Anxiety

Tags

NGSS.HS-LS1-3

What is the main difference in the ECG appearance of a junctional rhythm compared to a normal sinus rhythm?

• Absence of QRS complexes

• Inverted or absent P waves

• Prolonged QT interval

• Elevated ST segment