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Myocarditis I: Introduction

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...

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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...

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Myocarditis III: Medical Management

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Cardiomyopathy III: Hypertrophic Cardiomyopathy

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Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...

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Related Experiment Video

Updated: May 21, 2026

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice

Published on: May 5, 2022

[Myocarditis in Olympic marathon runner].

Rafi Wishnitzer¹, Gershon Fink, Caspi Avraham

¹Sport Medicine Unit, Pulmonary Institute, Kaplan Medical Center, Rehovot, Israel. rafiwish@gmail.com

|June 30, 2012

Summary

This summary is machine-generated.

Elite marathon runners may develop myocarditis due to intensive training. Physicians must heed runner complaints to prevent serious outcomes from these dedicated athletes.

Related Experiment Videos

Last Updated: May 21, 2026

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice

Real-Time Electrocardiogram Monitoring During Treadmill Training in Mice

Published on: May 5, 2022

Area of Science:

Sports Medicine
Cardiology
Infectious Diseases

Background:

Elite marathon runners undertake strenuous training regimens, often pushing through pain and minor infections.
Intensive training can suppress the immune system, increasing vulnerability to viral infections.

Observation:

A case study of an Olympic marathoner revealed symptoms including muscle pain, shortness of breath, and chest uneasiness during high-intensity training.
Initial examinations showed a low white blood cell count and abnormal electrocardiogram (ECG) findings, suggesting viral myocarditis.

Findings:

Despite normal initial physical exams, cardiac investigations indicated myocarditis, likely viral, in the marathoner.
The athlete recovered after ceasing training, with normal ECG and cardiac function tests following recovery.

Implications:

Physicians need to be vigilant regarding medical complaints from marathoners, even those who appear healthy.
Early recognition and management of potential cardiac issues in endurance athletes are crucial for preventing severe complications.