Cardiology Quiz #16: Electrocardiogram

1. A 65-year-old man with a history of hypertension presents with chest pain and shortness of breath. His electrocardiogram (ECG) shows elevation of the ST segment in leads II, III, and aVF. Which of the following best describes the area of the heart most likely affected? 

Question 1 of 5

2. A 58-year-old woman presents to the emergency department with palpitations. An ECG reveals a regular rhythm with a heart rate of 160 beats per minute and narrow QRS complexes. There are no discernible P waves before each QRS complex. Which of the following is the most likely diagnosis? 

Question 2 of 5

3. A 72-year-old man with a history of chronic obstructive pulmonary disease presents with dizziness and fatigue. His ECG shows a sawtooth pattern of atrial activity. Which of the following is the most likely diagnosis? 

Question 3 of 5

4. A 24-year-old woman presents for a routine check-up. Her ECG shows a PR interval of 240 ms. She is asymptomatic. Which of the following is the most appropriate next step in managing this patient? 

Question 4 of 5

5. A 55-year-old man with no significant medical history presents with episodes of lightheadedness. His ECG reveals a progressive lengthening of the PR interval until a QRS complex is dropped, after which the cycle repeats. Which of the following is the most likely diagnosis? 

Question 5 of 5


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