A 58-year-old with severe CAP in ICU asks about procalcitonin to stop antibiotics at day 3 while unstable. What do guidelines advise?...

Question

A 58-year-old with severe CAP in ICU asks about procalcitonin to stop antibiotics at day 3 while unstable. What do guidelines advise?

Accepted Answer

Do not use PCT alone; use clinical stability and guidelines on duration (>=5 days)

Answer

Use PCT alone to stop early

Answer

Stop all antibiotics if PCT low

Answer

Rely on CRP only

Answer

No biomarkers have any role

"us-abim MCQ (SBA): Biomarkers in CAP