Version May 2024
CASE 1 — An 85-year-old man is found in his room. He is noted to be obtunded with a slow heart rate. An electrocardiogram is obtained and a specific diagnosis is suggested (waveform 1 and waveform 2).
CASE 2 — A rhythm strip is obtained from a patient with chronic heart failure with reduced ejection fraction (HFrEF) treated with digoxin. What is the arrhythmia (waveform 3 and waveform 4)?
CASE 3 — The following electrocardiogram is most likely to be associated with which one of the following diagnoses (waveform 5 and waveform 6)?
●Posterior myocardial infarction
●Aortic regurgitation
●Idiopathic pulmonary arterial hypertension
●Acute pericarditis
●Anterior wall ischemia
CASE 4 — A 43-year-old man with end-stage kidney disease presents with fatigue, dyspnea, and increased jugular venous pressure. What electrocardiographic finding is present (waveform 7 and waveform 8)?
CASE 5 — What arrhythmia is seen on the rhythm strip (waveform 9 and waveform 10)?
CASE 6 — A patient with slowly progressive chronic heart failure with reduced ejection fraction (HFrEF) presents with the following electrocardiogram. What is the diagnosis (waveform 11 and waveform 12)?
●Posterior wall myocardial infarction with left anterior hemiblock
●Atrial septal defect
●Mitral stenosis
●Right bundle branch block with diffuse ischemia
●Dextrocardia
CASE 7 — The following electrocardiogram is diagnostic of which disorder (waveform 13 and waveform 14)?
●Right ventricular hypertrophy
●Wolff-Parkinson-White pattern
●Dextrocardia
●Acute inferoposterolateral myocardial infarction or ischemia
●Hypertrophic cardiomyopathy
CASE 8 — The following electrocardiogram is most consistent with which disorder (waveform 15 and waveform 16)?
●Chronic renal failure
●Anterior myocardial infarction, hyperacute phase
●Aortic stenosis
●Prinzmetal (vasospastic) angina
●Ventricular septal defect
CASE 9 — What arrhythmia is present and what is the likely cause (waveform 17 and waveform 18)?
CASE 10 — The electrocardiogram in this 60-year-old man is most consistent with which diagnosis (waveform 19 and waveform 20)?
●Mitral stenosis
●Chronic obstructive pulmonary disease
●Left posterior fascicular block
●Ventricular septal defect
●Hypertrophic cardiomyopathy
CASE 11 — A 55-year-old woman has the following electrocardiogram (waveform 21 and waveform 22). What is the most likely diagnosis?
●Mitral stenosis
●Aortic regurgitation
●Anteroseptal myocardial infarction
●Bifascicular block (right bundle branch block and left posterior hemiblock)
●Atrial septal defect
CASE 12 — The following electrocardiogram is consistent with which condition (waveform 23 and waveform 24)?
●Severe chronic obstructive pulmonary disease
●Posterior myocardial infarction
●Normal neonatal electrocardiogram
●Hypertrophic cardiomyopathy
●Mitral stenosis
CASE 13 — The following wide complex arrhythmia is incidentally discovered during exercise testing. What is the arrhythmia and what is the underlying rhythm (waveform 25 and waveform 26)?
CASE 14 — A 21-year-old man with chronic (congestive) heart failure has the following electrocardiogram. What is the diagnosis (waveform 27 and waveform 28)?
●Atrial septal defect
●Duchenne's muscular dystrophy
●Mitral regurgitation
●Idiopathic dilated cardiomyopathy
●Patent ductus arteriosus with Eisenmenger's syndrome
CASE 15 — What arrhythmia is present on the electrocardiogram (waveform 29 and waveform 30)?
CASE 16 — What U wave abnormality is present on this electrocardiogram (waveform 31 and waveform 32)?
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