Differential Diagnosis for Heart Failure

Primary Differential Considerations

The American College of Cardiology and the American Heart Association recommend excluding alternative diagnoses that can mimic heart failure symptoms, particularly focusing on incorrect HF diagnosis, primary valvular disease, restrictive cardiomyopathies, pericardial constriction, high-output states, and chronic pulmonary disease 1, 2
Inaccurate measurement of left ventricular ejection fraction can lead to misclassification, particularly when distinguishing HF with preserved EF (HFpEF) from HF with reduced EF (HFrEF), as stated by the American College of Cardiology 1, 2
Primary valvular disease, such as aortic stenosis and mitral regurgitation, must be excluded as these can present with identical symptoms but require different management strategies, according to the American College of Cardiology 1, 2
Restrictive (infiltrative) cardiomyopathies, including amyloidosis, sarcoidosis, and hemochromatosis, should be considered in the differential diagnosis, as recommended by the American Heart Association 1, 2
Pericardial constriction can mimic heart failure with elevated jugular venous pressure and peripheral edema but requires surgical intervention rather than medical HF therapy, as stated by the American College of Cardiology 1, 2

The American College of Cardiology recommends obtaining a thorough medication and exposure history, documenting current and past alcohol use, illicit drugs, chemotherapy exposure (cardiotoxins), and alternative therapies 4, 5
Physical examination must assess volume status and jugular venous pressure elevation, as recommended by the American College of Cardiology 4
Initial laboratory evaluation should include complete blood count, thyroid-stimulating hormone, serum electrolytes, blood urea nitrogen, serum creatinine, fasting blood glucose, and liver function tests, according to the American College of Cardiology 4, 7
A 12-lead electrocardiogram is mandatory to identify arrhythmias, conduction abnormalities, left ventricular hypertrophy, or evidence of prior myocardial infarction, as stated by the American College of Cardiology 4, 1
Two-dimensional echocardiography with Doppler is the definitive test to determine LVEF, assess chamber size, wall thickness, regional wall motion abnormalities, valve function, and identify restrictive physiology or pericardial disease, as recommended by the American College of Cardiology 4, 2

The American College of Cardiology advises against diagnosing heart failure based solely on symptoms such as dyspnea, fatigue, or edema without objective evidence of cardiac structural or functional abnormality 3
The American Heart Association recommends not relying on clinical examination alone in elderly, obese, or female patients where physical findings are less reliable 3
The American College of Cardiology states that not all patients with reduced LVEF have symptomatic heart failure requiring treatment, as Stage B patients (structural disease without symptoms) have different therapeutic goals 5
The American College of Cardiology advises against overlooking reversible causes such as severe hypertension, acute ischemia, thyrotoxicosis, or severe anemia that may resolve with treatment of the underlying condition 1, 2