Chapter 23 Flashcards
1
Q
What is the false negative rate of gram staining for septic arthritis?
A
25-78%
2
Q
What is the false negative rate of synovial fluid culture for septic arthritis?
A
50%
3
Q
Which joints are most often affected by septic arthritis?
A
Stifle and elbow
4
Q
What are the 4 types of IMPA classically described?
A
I - idiopathic
II - reactive to distant inflammation/infection
III - associated with gastroenteritis or hepatopathy
IV - associated with malignancy
5
Q
What type of hypersensitivity is IMPA?
A
Type III (deposition of antigen-antibody complexes)
6
Q
What finding on arthrocentesis is supportive of s diagnosis of SLE?
A
LE cell
Neutrophil (or other leucocyte) containing purple-pink homogenous inclusion
7
Q
Ddx - primary joint tumours
A
Histiocytic sarcoma
Synovial cell sarcoma
Synovial myxoma
