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Related Concept Videos

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

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The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
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Rheumatic Heart Disease I: Introduction01:23

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Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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AssessmentA comprehensive assessment is essential in managing a patient with rheumatic heart disease (RHD). Begin with obtaining a detailed medical history, including recent streptococcal infections, a history of rheumatic fever, or previously diagnosed rheumatic heart disease. Assess the patient for symptoms such as fever, chest pain, widespread joint pain (arthralgia), tachycardia, pericardial friction rub, muffled heart sounds, heart murmurs, peripheral edema, subcutaneous nodules, and...
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Rheumatic Heart Disease III: Medical Management01:21

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Rheumatic heart disease (RHD) management can be divided into two main strategies: prevention and long-term management.Primary PreventionPrimary prevention focuses on timely diagnosis and management of group A streptococcal pharyngitis to prevent acute rheumatic fever. The most widely used antibiotic for treating this condition is intramuscular benzathine penicillin G.Acute Rheumatic Fever TreatmentThe primary treatment goal for a patient diagnosed with acute rheumatic fever is to suppress the...
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Heart Failure III: Clinical Manifestations01:26

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Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
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Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
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Related Experiment Video

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A rash with a heavy heart.

Sergio Barros-Gomes1,2,3,4, Niyada Naksuk1,2,3,4, Dragan Jevremovic1,2,3,4

  • 1Barros-Gomes S, Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA.

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Summary

Cardiac amyloidosis, often misdiagnosed, presents unique challenges. This case highlights primary light chain amyloidosis mimicking hypertrophic cardiomyopathy, emphasizing comprehensive diagnostic approaches for accurate cardiac amyloidosis detection.

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Area of Science:

  • Cardiology
  • Nephrology
  • Hematology

Background:

  • Cardiac amyloidosis (CA) is a rare infiltrative disease often misdiagnosed due to overlapping symptoms with other conditions causing left ventricular (LV) hypertrophy.
  • Primary light chain (AL) amyloidosis can present with cardiac involvement, mimicking hypertrophic cardiomyopathy (HCM).

Observation:

  • A 49-year-old man with a prior HCM diagnosis presented with periorbital rash, numbness, and shortness of breath.
  • Physical exam revealed periorbital purpura, macroglossia, and orthostatic hypotension. Cardiac auscultation noted S3 and S4 sounds.
  • Electrocardiography (ECG) showed diffuse low-voltage QRS complexes, and echocardiography demonstrated severe diastolic impairment, a "sparkling" myocardium, thickened cardiac structures, and pericardial effusion.

Findings:

  • Laboratory tests revealed elevated free light chain-differential (FLC-diff), N-terminal fragment of brain natriuretic peptide (NT-BNP), and cardiac Troponin T (cTnT).
  • Bone marrow biopsy confirmed AL amyloidosis.
  • The constellation of clinical, ECG, echocardiographic, and serological findings led to the diagnosis of AL amyloidosis with cardiac involvement mimicking HCM.

Implications:

  • This case underscores the critical importance of integrating clinical presentation, serological markers, ECG, and echocardiographic findings for the accurate diagnosis of cardiac amyloidosis.
  • Early and accurate diagnosis of cardiac amyloidosis is crucial for timely management and potentially improving patient outcomes.
  • Recognizing AL amyloidosis as a mimic of HCM is vital to avoid diagnostic delays and ensure appropriate treatment strategies.