Which statement best describes myocarditis?

Which statement best describes myocarditis?

• A. Acute inflammation of the heart muscle caused by viral, bacterial, or fungal infection, serum sickness, rheumatic fever, chemical agents, complications from a collagen disease
• B. Inflammation of the outer lining of the heart
• C. Blockage of pulmonary artery
• D. Degeneration of heart valves

Answer: (A)

Myocarditis is inflammation of the heart muscle itself, the myocardium. The statement describes acute inflammation of the heart muscle with a wide range of possible causes, which is exactly what myocarditis involves: infections from viruses, bacteria, or fungi, as well as immune-mediated reactions such as serum sickness, rheumatic fever, exposure to certain chemicals, or complications from autoimmune or collagen diseases. This inflammation can disrupt the heart’s ability to contract and conduct impulses, leading to symptoms that reflect impaired function. The other scenarios refer to different parts or conditions of the heart: inflammation of the outer lining of the heart is pericarditis; blockage of the pulmonary artery describes a pulmonary embolism; and degeneration of heart valves describes valvular disease.

Myocarditis is inflammation of the heart muscle itself, the myocardium. The statement describes acute inflammation of the heart muscle with a wide range of possible causes, which is exactly what myocarditis involves: infections from viruses, bacteria, or fungi, as well as immune-mediated reactions such as serum sickness, rheumatic fever, exposure to certain chemicals, or complications from autoimmune or collagen diseases. This inflammation can disrupt the heart’s ability to contract and conduct impulses, leading to symptoms that reflect impaired function.

The other scenarios refer to different parts or conditions of the heart: inflammation of the outer lining of the heart is pericarditis; blockage of the pulmonary artery describes a pulmonary embolism; and degeneration of heart valves describes valvular disease.