Monoarticular arthritis

Question 1

What are three differentials for acute monoarthritis?

Answer 1

septic arthritis, gout/pseudogout, reactive arthritis

Question 2

What are the indications for joint aspiration?

Answer 2

diagnostic, therapeutic- drainage of fluid, infection, blood

Question 3

What are the contraindications for joint aspiration?

Answer 3

overlying cellulitis, non native joint, open wound, deranged coag

Question 4

Which bacteria are associated with septic arhtritis?

Answer 4

staph aureus, n.gonorrhoea, staph epidermidis

Question 5

Which bacteria is associated with prosthetic septic arthritis?

Answer 5

staph epidermididis

Question 6

Which blood marker is reactive arthritis associated with?

Answer 6

HLA B27 (seronegative)

Question 7

What is Reiter’s syndrome?

Answer 7

=reactive arthritis
can’t see (conjunctivitis)
can’t pee (urethritis)
can’t bend the knee (arthritis)

Question 8

Which GI organisms are associated with reactive arthritis?

Answer 8

salmonella, shigella, campylobacter, c.diff

Question 9

Which organism associated with chest infections can cause reactive arthritis?

Answer 9

c.pneumoniae

Question 10

What are risk factors for gout?

Answer 10

high uric acid levels, diet- red meat, diuretics, obesity, HTN, male