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Related Concept Videos

Rheumatic Heart Disease I: Introduction01:23

Rheumatic Heart Disease I: Introduction

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...
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

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...
Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
Pericarditis I: Introduction01:22

Pericarditis I: Introduction

Pericarditis is defined as the inflammation of the pericardium, the thin, sac-like membrane surrounding the heart. This condition can cause significant chest pain and other symptoms, often necessitating medical intervention. The pericardium has two layers: the inner visceral layer and the outer parietal layer, separated by a small amount of fluid that reduces friction during heartbeats.Types of PericarditisPericarditis can be classified into several types based on the duration and nature of the...

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Related Experiment Video

Updated: Jul 10, 2026

Anti-Nuclear Antibody Screening Using HEp-2 Cells
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Anti-Nuclear Antibody Screening Using HEp-2 Cells

Published on: June 23, 2014

Polyarteritis nodosa.

H David Pettigrew1, Suzanne S Teuber, M Eric Gershwin

  • 1Department of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.

Comprehensive Therapy
|November 16, 2007
PubMed
Summary
This summary is machine-generated.

Polyarteritis nodosa is a vasculitis affecting medium and small arteries. Accurate diagnosis of its subtypes is key for effective treatment strategies.

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Last Updated: Jul 10, 2026

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An Immunohistopathologic Study to Profile the Folate Receptor Beta Macrophage and Vascular Immune Microenvironment in Giant Cell Arteritis
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Area of Science:

  • Rheumatology
  • Pathology

Background:

  • Polyarteritis nodosa (PAN) has evolved from a broad category of vasculitides to a specific diagnosis.
  • PAN is characterized as a systemic transmural necrotizing vasculitis.

Purpose of the Study:

  • To review the clinical features and classification of polyarteritis nodosa.
  • To emphasize the importance of accurate subtype diagnosis for treatment.

Main Methods:

  • Literature review of clinical features.
  • Analysis of classification criteria for polyarteritis nodosa.

Main Results:

  • Polyarteritis nodosa primarily affects medium-sized and sometimes small muscular arteries.
  • Commonly involved sites include kidneys, gastrointestinal tract, skin, nerves, joints, and muscles.

Conclusions:

  • Accurate classification of polyarteritis nodosa subtypes improves therapeutic outcomes.
  • Understanding clinical features aids in diagnosis and management.