What Causes Viral Myocarditis?

Does the flu cause myocarditis?

Acute myocarditis is a well-known complication of influenza infection.

The frequency of myocardial involvement in influenza infection varies widely, with the clinical severity ranging from asymptomatic to fulminant varieties..

Is myocarditis the same as a heart attack?

Myocarditis can also mimic a heart attack. When cardiac inflammation occurs in the regions of the heart nearest to the outside surface, it can present as chest pain. However, in myocarditis the coronary vasculature, which supplies the heart and is generally blocked in heart attacks, usually appears normal 1.

How can you tell the difference between myocarditis and pericarditis?

Myocarditis is the inflammation of the heart muscle and pericarditis is the inflammation of the lining outside the heart. In both cases, the body’s immune system is causing inflammation either to try to get rid of the infection or in response to some other trigger.

What is the most common cause of myocarditis?

Viral infection is the most common cause of myocarditis. When you have one, your body produces cells to fight the virus. These cells release chemicals. If the disease-fighting cells enter your heart, some chemicals they release can inflame your heart muscle.

Is viral myocarditis contagious?

The viruses are spread through contact with body fluids of an infected person and can also be transmitted from a pregnant woman to a fetus during pregnancy. This is the most common cause of myocarditis, blamed for about half of all US cases.

Who is at risk for myocarditis?

In fact, it most often affects otherwise healthy, young, athletic types with the high-risk population being those of ages from puberty through their early 30’s, affecting males twice as often as females. Myocarditis is the 3rd leading cause of Sudden Death in children and young adults.

Can myocarditis be caused by stress?

Stress cardiomyopathy is a condition caused by intense emotional or physical stress leading to rapid and severe reversible cardiac dysfunction. It mimics myocardial infarction with changes in the electrocardiogram and echocardiogram, but without any obstructive coronary artery disease.

How do you cure myocarditis?

Treatment for myocarditis may include:corticosteroid therapy (to help reduce inflammation)cardiac medications, such as a beta-blocker, ACE inhibitor, or ARB.behavioral changes, such as rest, fluid restriction, and a low-salt diet.diuretic therapy to treat fluid overload.antibiotic therapy.

Can a viral infection cause congestive heart failure?

An rare type of heart failure known as viral cardiomyopathy is triggered by a viral infection. Most people with heart failure can trace it to long-standing cardiac risks. An unlucky few have a virus to blame.

When should you go to the hospital for rapid heart rate?

Go to your local emergency room or call 9-1-1 if you have: New chest pain or discomfort that’s severe, unexpected, and comes with shortness of breath, sweating, nausea, or weakness. A fast heart rate (more than 120-150 beats per minute) — especially if you are short of breath. Shortness of breath not relieved by rest.

What does heart inflammation feel like?

Inflammation of the heart often causes chest pain, and you may feel like you are having a heart attack.

Do all viruses cause myocarditis?

Many viruses have been implicated as causes of myocarditis. These most commonly include adenoviruses and enteroviruses such as the coxsackieviruses. Recently, parvovirus B19 has been associated with a significant percentage of patients diagnosed with myocarditis and DCM.

How long can you live with myocarditis?

For example, in many typically healthy adults with uncomplicated coxsackievirus myocarditis, symptoms can start to improve over a couple weeks. In other cases, the heart takes a few months to recover. Sometimes, the damage to the heart muscle is permanent and heart failure persists after the inflammation has resolved.

How serious is myocarditis?

Severe myocarditis can permanently damage your heart muscle, possibly causing: Heart failure. Untreated, myocarditis can damage your heart’s muscle so that it can’t pump blood effectively. In severe cases, myocarditis-related heart failure may require a ventricular assist device or a heart transplant.

How is myocarditis detected?

Myocarditis is preliminarily diagnosed by detecting signs of irritation of heart muscle during the patient’s history and physical exam. Blood tests for heart muscle enzymes (CPK levels) can be elevated. Electrical testing (EKG) can suggest irritation of heart muscle and document irregular beating of the heart.

Is viral myocarditis genetic?

Myocarditis is not inherited. There are no known genes associated with human myocarditis. When multiple family members are affected, the cause is usually due to common infection or environmental exposure.

How long does it take to recover from viral myocarditis?

In many cases, myocarditis improves on its own or with treatment, leading to a complete recovery. Myocarditis treatment focuses on the cause and the symptoms, such as heart failure. In mild cases, persons should avoid competitive sports for at least three to six months.

What does myocarditis look like on ECG?

ECG The majority of patients with myocarditis present with nonspecific ECG changes, and the ECG may have a variety of findings. These findings include nonspecific ST-segment and T-wave abnormalities, sinus tachycardia and conduction abnormalities, such as bundle-branch blocks or atrioventricular conduction delays.