types of pericarditis

fibrinous pericarditis
→ autoimmune disease(eg ☆SLE, RA), viral infection, uremia, MI

purulent pericarditis
→ active bacterial infection (eg S aureus, Streptococcus sepsis) in the pericardial space

hemorrhagic pericarditis (blood mixed with fibrinous exudate)
→ malignancy, TB, cardiac surgery

cardiology UWorld