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Myocarditis


Definition:

Myocarditis is inflammation of the heart muscle.

See also: Pediatric myocarditis

Alternative Names:

Inflammation - heart muscle

Signs and tests:

A physical examination may show no abnormalities, or may reveal the following:

  • Abnormal heartbeat or heart sounds (murmurs, extra heart sounds)
  • Fever
  • Fluid in the lungs
  • Rapid heartbeat (tachycardia)
  • Swelling (edema) in the legs

Tests used to diagnosis myocarditis include:

Treatment:

Treatment is aimed at the cause of the problem, and may involve:

  • Antibiotics
  • Anti-inflammatory medicines to reduce swelling
  • Diuretics to remove excess water from the body
  • Low-salt diet
  • Reduced activity

If the heart muscle is very weak, your health care provider will prescribe medicines to treat heart failure. Abnormal heart rhythms may require the use of additional medications, a pacemaker, or an implantable cardioverter-defibrillator. If a blood clot is in the heart chamber, you will also receive blood thinning medicine.

Expectations (prognosis):

How well you do depends on the cause of the problem and your overall health. The outlook varies. Some people may recover completely. Others may have permanent heart failure.

Complications:
Calling your health care provider:

Call your health care provider if you have symptoms of myocarditis, especially after a recent infection.

Seek immediate medical help if you have severe symptoms or have been diagnosed with myocarditis and have increased:

Prevention:

Promptly treating conditions that cause myocarditis may reduce the risk.

References:

Liu P, Baughman KL. Myocarditis. In: Bonow RO, Mann DL, Zipes DP, Libby P, eds. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2011:chap 70.

McKenna W. Diseases of the myocardium and endocardium. In: Goldman L, Schafer AI, eds. Cecil Medicine. 24th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 60.


Review Date: 6/7/2012
Reviewed By: Glenn Gandelman, MD, MPH, FACC Assistant Clinical Professor of Medicine at New York Medical College, and in private practice specializing in cardiovascular disease in Greenwich, CT. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M. Health Solutions, Ebix, Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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