Flashcards in Pericardial Disorders Deck (21):
How much fluid is normally present in the pericardium?
What is a pericardial effusion?
when the parietal pericardium distends from an increase in the volume of pericardial fluid.
What is a hemopericardium?
when blood passes into the pericardial sac, possibly due to a dissecting aorta or trauma.
What is a purulent pericarditis?
inflammation of the pericardial space characterized by gross pus in the pericardium.
What makes pericardial fluid accumulation more significant/symptomatic?
the more rapidly it accumulates
What is cardiac tamponade?
compression of atria and ventricles, restricting cardiac filling due to RAPID pericardial effusion.
What is pericarditis?
pericardial inflammation due to cardiac disorders, thoracic or systemic disorders, metastases, or cardiac surgery. This can lead to varying degrees of pericardial effusion.
Is primary pericarditis common?
NO, but when it does occur it is almost always viral in origin.
Is pericarditis more often acute or chronic?
acute, but when chronic it is due to TB (affects lungs and is thus in close proximity to the pericardium) or fungal infections.
What are the different types of acute pericarditis?
serous (yellowish fluid), fibrinous (proteinaceous), purulent (pus), hemorrhagic (blood), caseous (from TB)
What are the causes of pericarditis?
CARDIAC RIND (pneumonic):
Collagen vascular diseases
Acute renal failure
**Is serous pericarditis usually infectious or noninfectious?
NONINFECTIOUS (RF, SLE, scleroderma, UREMIA (high levels of waste products in the blood)) and fluid accumulates SLOWLY, due to increased permeability of vessels due to inflammation). This rarely organizes (causes fibrosis) and does not constrict.
What may accompany a serous pericarditis?
What is the most frequent type of pericarditis?
fibrinous and serofibrinous= serous fluid mixed with a fibrinous exudate. Usually due to acute MI.
What is Dressler syndrome?
late pericarditis that develops 2 weeks to several months post MI (may have an autoimmune etiology).
How does fibrinous differ from serofibrinous pericarditis?
fibrinous= surface is dry with fine granular roughening.
serofibrinous= increased inflammatory component causes greater and thicker fluid, thicker and cloudy from an increase in WBC and fibrin.
How do organisms reach the pericardium in purulent or suppurative pericarditis?
1. direct extension from neighboring inflammation
2. seeding from the blood
3. lymphatic extension
4. direct induction during surgery
*organization is more common, leading to constrictive pericarditis :(
Is resolution of purulent of suppurative pericarditis common?
**What can lead to a hemorrhagic pericarditis?
- malignant tumor
- bacterial infections
- bleeding disorders
- following cardiac surgery
What is characteristic of chronic pericarditis?
fibrous thickening of serosal membranes called soldier's plaque. In severe cases, organization can cause complete obliteration of the pericardial sac leading to adhesive pericarditis= stringy type of adhesion between the visceral and parietal pericardium.