Info

🌱 來自: Diagnostic studies-pneumonia

Procalcitonin

• ↑ in acute bacterial (not viral) PNA.
• Consider stopping abx
  • if levels <0.25 ng/ml (<0.5 ng/mL in ICU Pts) or
  • ↓ ≥80% from peak.
• ↓ abx exposure by 2–3 d
  • (Lancet ID 2016;16:819 & 2018;18:95).
• Not validated in immunosuppressed hosts.
• Levels harder to interpret in CKD.
• False ⊕ in
  • cardiac arrest,
  • shock,
  • burns,
  • surgery.