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February 9, 2012

Pericarditis

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What is pericarditis?

The hearts sits in the center of the chest and is surrounded by a sac called the pericardium. This sac has two layers, one that fits tightly onto the heart muscle and another looser layer surrounding the inner layer. Inflammation of these tissue layers surrounding the heart is referred to as pericarditis.

Picture of the Heart in the Pericardial Sac

What causes pericarditis?

There are many causes of pericarditis. Most often the cause is unknown. Causes of pericarditis are listed below:

Idiopathic

  • The cause of the illness is not identified (although often it's the result of a minor viral illness or "cold")

Mechanical injury to the heart

Infection Bacterial

  • Viral

  • Fungal

  • HIV

Tumors or cancer

Connective Tissue Disease

Metabolic diseases

Medication Reactions

  • Side effects of certain medications can cause an immune response causing an inflammation of the pericardial sac and pericarditis. Medicines that have been implicated include phenytoin (Dilantin), hydralazine (Apresoline) and procainamide (Pronestyl, Procan-SR, Procanbid).


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Pericarditis

What is hypothyroidism?

Hypothyroidism is a condition characterized by abnormally low thyroid hormone production. There are many disorders that result in hypothyroidism. These disorders may directly or indirectly involve the thyroid gland. Because thyroid hormone affects growth, development, and many cellular processes, inadequate thyroid hormone has widespread consequences for the body.

This article will focus specifically on hypothyroidism in adults.

What are thyroid hormones?

Thyroid hormones are produced by the thyroid gland. This gland is located in the lower part of the neck, below the Adam's apple. The gland wraps around the windpipe (trachea) and has a shape that is similar to a butterfly - formed by two wings (lobes) and attached by a middle part (isthmus).

The thyroid gland uses iodine (mostly available from the diet in foods such as seafood, bread, and salt) to produce thyroid hormones....

Read the Hypothyroidism article »







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