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Related Concept Videos

Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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...
Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
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...

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Related Experiment Video

Updated: Jul 13, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
07:20

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR

Published on: February 4, 2018

[Cardiac involvement in Lyme disease].

D Lamaison1

  • 1Service de cardiologie, CHU, place Henri-Dunant, 63000 Clermont-Ferrand, France. d.lamaison@wanadoo.fr

Medecine Et Maladies Infectieuses
|July 17, 2007
PubMed
Summary

Cardiac Lyme disease (Lyme borreliosis) can cause heart rhythm issues, often resolving spontaneously. Early diagnosis and antibiotic treatment, typically doxycycline or ceftriaxone, lead to full recovery in most cases.

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Immunology

Context:

  • Cardiac manifestations of Lyme Borreliosis are infrequent but can occur early or late after infection.
  • Early cardiac involvement is linked to direct spirochetal infection, while late-stage issues may stem from autoimmunity.
  • Lyme carditis typically presents as atrioventricular block, but myocarditis, pericarditis, and arrhythmias can also occur.

Purpose:

  • To summarize the clinical presentation, diagnosis, and management of cardiac involvement in Lyme Borreliosis.
  • To highlight the typical presentation of fluctuating atrioventricular block and rarer forms like myocarditis or pericarditis.
  • To emphasize that diagnosis relies on clinical and laboratory findings, with a suggestion for screening in young individuals with conduction disturbances.

Summary:

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Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
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Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research

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Assessing Bacterial Invasion of Cardiac Cells in Culture and Heart Colonization in Infected Mice Using Listeria monocytogenes
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Assessing Bacterial Invasion of Cardiac Cells in Culture and Heart Colonization in Infected Mice Using Listeria monocytogenes

Published on: May 27, 2015

Related Experiment Videos

Last Updated: Jul 13, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
07:20

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR

Published on: February 4, 2018

Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
08:23

Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research

Published on: August 31, 2013

Assessing Bacterial Invasion of Cardiac Cells in Culture and Heart Colonization in Infected Mice Using Listeria monocytogenes
09:18

Assessing Bacterial Invasion of Cardiac Cells in Culture and Heart Colonization in Infected Mice Using Listeria monocytogenes

Published on: May 27, 2015

  • Lyme carditis, a complication of Lyme Borreliosis, usually presents as transient atrioventricular block, but can also manifest as myocarditis or pericarditis, sometimes mimicking acute myocardial infarction.
  • Diagnosis involves clinical suspicion, especially in young individuals with conduction abnormalities, alongside standard Lyme disease diagnostics.
  • Complete recovery is common, with treatment involving antibiotics like doxycycline or ceftriaxone, similar to non-cardiac Lyme disease.

Impact:

  • Provides a concise overview of Lyme carditis for clinicians and researchers.
  • Underscores the importance of considering Lyme disease in patients with unexplained cardiac conduction abnormalities.
  • Reinforces that Lyme carditis is generally treatable and has a good prognosis with appropriate antibiotic therapy.