Chest Pain (cont.)
Pericarditis
The heart is contained in a sac called the pericardium. Just like in
pleurisy, this sac can become inflamed and cause pain. As opposed to angina,
this pain tends to be sharp and is due to the inflamed sac rubbing against the
outer layers of the heart.
The most common cause of pericarditis is either a viral illness or is unknown
(idiopathic). Inflammatory diseases of the body (rheumatoid arthritis, systemic
lupus erythematosus), kidney failure, and cancer are other conditions that can
cause pericarditis. Trauma, especially from steering wheel injuries in motor
vehicle accidents can cause pericarditis.
The pain with pericarditis is intense, sharp, tends to be worse when lying down, and is
relieved by leaning forward. Because the pain can be so severe, radiate to the
arm or neck, and cause some shortness of breath, it is sometimes mistaken for
angina, pulmonary embolus, or aortic dissection. Associated symptoms include
fever and malaise.
History is helpful in making the diagnosis, looking for a recent viral
illness and asking about past medical history. Physical examination may reveal a
friction rub when listening to the heart sounds.
The electrocardiogram may show changes consistent with pericarditis, but on
occasion, the EKG may mimic an acute heart attack. Echocardiogram is
helpful if there is fluid in the pericardial sac associated with the
inflammation.
An anti-inflammatory medication like ibuprofen is the treatment for
pericarditis. Addressing the underlying cause will also direct therapy.
Cardiac tamponade is a complication of pericarditis. Pressure from excess
fluid built up in the pericardial sac is so great that it prevents blood from
returning to heart. The diagnosis is made clinically with the triad of (Beck's
triad):
Treatment is placing a needle into the pericardium to withdraw fluid and/or
surgery to open a window in the pericardium to prevent future fluid buildup.
For more, please read the Pericarditis article.
Next: Aorta and aortic dissection »
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