135.4 📌 章末速蚘

  • Acute monoarthritis = septic until proven
  • Joint aspiration: cell count + Gram + culture + crystal
  • Septic synovial WBC: > 50,000 (PMN > 75%)
  • Empirical: Vanco + Ceftri
  • DGI triad: tenosynovitis + migratory arthralgia + pustular dermatitis
  • Hip septic: 緊急 OR drainage 6 hr
  • PJI: 2-stage revision + 6-8 wk IV + rifampin (Staph)
  • Lyme arthritis: doxy 28 d
  • Reactive: post-infectious, HLA-B27, NSAID + treat primary