1. Cardiology ECG Review for the ABIM

2. A 46-year-old woman is evaluated because of palpitations. Her 12-lead electrocardiogram, obtained while she is having typical symptoms, is shown. What abnormality is seen?

3. A 72-year-old man is noted to have bradycardia alternating with tachycardia during an orthopedic procedure. A 12-lead electrocardiogram is subsequently obtained. What abnormality is seen?

4. 60-year-old woman with hypertension and diabetes mellitus is evaluated because of an 8-hour history of substernal chest pressure associated with dyspnea and diaphoresis. A 12-lead electrocardiogram obtained shortly after her arrival to the emergency department is shown. What abnormality is seen?

5. A 38-year-old woman is evaluated because of palpitations. She has a childhood history of the acute onset of rapid regular palpitations that she has learned to terminate with different vagal maneuvers. A 12-lead electrocardiogram taken during a period of palpitations is shown. What abnormality is seen?

6. A 43-year-old man with congenital heart disease is evaluated because of progressive dyspnea for the past 3 years. His 12-lead electrocardiogram is shown. What abnormality is seen?

7. A 75-year-old woman who was treated for heart block 3 years ago is seen for a follow-up visit. Her 12-lead electrocardiogram is shown. What does the tracing show?

8. An 87-year-old man with a pacemaker implanted for atrioventricular block is seen in follow-up. His 12-lead electrocardiogram is shown. What abnormality is seen?

9. A 59-year-old man is brought to the emergency department because of substernal chest pressure of 1 hour's duration. His 12-lead electrocardiogram is shown. What abnormality is seen?

10. A 60-year-old woman is evaluated because of palpitations. Her 12-lead electrocardiogram is shown. What abnormality is seen?

11. An 84-year-old woman is hospitalized because of acute coronary syndrome. A 12- lead electrocardiogram obtained while she is having chest pain is shown. What abnormality is seen?

12. A 42-year-old man is noted to have a soft S1 on physical examination. His 12-lead electrocardiogram is shown. What abnormality is seen?

13. A 53-year-old woman is evaluated because of pleuritic chest pain. Her 12-lead electrocardiogram is shown. What abnormality is seen?

14. A 44-year-old woman has hypertension. Her 12-lead electrocardiogram is shown. What abnormality is seen?

15. A 50-year-old man with severe ischemic cardiomyopathy is hospitalized because of syncope. His 12-lead electrocardiogram is shown. What abnormality is seen?

16. An 80-year-old man underwent implantation of a single-chamber pacemaker for paroxysmal atrioventricular block 3 years ago. He now has a cerebrovascular accident. His 12-lead electrocardiogram is shown. What abnormality is seen?

17. A 72-year-old man with a 35-year history of hypertension is evaluated because of dyspnea. His 12-lead electrocardiogram is shown. What abnormality is seen?

18. A 60-year-old man with hypertension and an evolving anterior wall myocardial infarction is evaluated in the emergency department. His 12-lead electrocardiogram is shown. What abnormality is seen?

19. A 45-year-old male smoker is evaluated because of a 3-hour history of substernal chest pressure radiating to the left arm associated with nausea and vomiting. A 12- lead electrocardiogram is shown. What abnormality is seen?

20. A 46-year-old man is evaluated because of palpitations. His 12-lead electrocardiogram, obtained while he is having typical symptoms, is shown. What abnormality is seen?

21. A 52-year-old man is evaluated because of acute renal insufficiency. A 12-lead electrocardiogram is shown. What abnormality is seen?

22. An otherwise asymptomatic 72-year-old man is evaluated because of an irregular pulse rate detected by his physician. His 12-lead electrocardiogram is shown. What abnormality is seen?

23. A 22-year-old man is evaluated because of dyspnea. His 12-lead electrocardiogram is shown. What abnormality is seen?

24. A 78-year-old woman is hospitalized because of pyelonephritis. Her 12-lead electrocardiogram is shown. What abnormalities are seen?

25. A 74-year-old man is evaluated because of exertional fatigue. His 12-lead electrocardiogram is shown. What abnormality is seen?

26. A 74-year-old man with ischemic cardiomyopathy and an implanted cardioverter/defibrillator develops palpitations and presyncope. His 12-lead electrocardiogram, obtained during his palpitations, is shown. What abnormality is seen?

27. 62-year-old man with hypertension and diabetes mellitus is evaluated because of substernal chest pressure radiating to the neck for the past 35 minutes. A 12- lead electrocardiogram is obtained upon his arrival in the emergency department. What abnormality is seen?

28. A 70-year-old woman with hypertension is seen for evaluation. Her 12-lead electrocardiogram is shown. What abnormality is seen?

29. A 40-year-old woman is evaluated because of headaches and muscle cramps. Her 12-lead electrocardiogram is shown. What abnormality is seen?

30. A 74-year-old man with a history of prior myocardial infarction is evaluated because of palpitations. His 12-lead electrocardiogram, obtained during his palpitations, is shown. What abnormality is seen?