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The impact of using biomarkers to determine the duration of antibiotics therapy has been studied. However, the question remains in clinical practice whether these biomarkers are reliable to determine antibiotics duration. This study is aimed to see if employing c-reactive protein (CRP) and Procalcitonin (PCT) to determine the duration of antibiotic use in hospitalized adult patients is both effective and safe. Search databases that were used are Pubmed, Cochrane library, and Embase. Only randomized controlled trials conducted in adult ( ≥ 18 years) hospitalized patients were included. The primary outcome assessed is the duration of antibiotics used. Secondary outcomes assessed are the length of hospitalization, recurrence of infection/rehospitalization, in-hospital mortality, and 28-day mortality. For the primary outcome, which is the duration of antibiotics use, PCT guided therapy significantly decreased the duration of antibiotics used in both sepsis and respiratory tract infections. For the secondary outcomes, there was no statistically significant difference in the outcomes of length of hospitalization, recurrence of infection/rehospitalization, and 28-day mortality. However, in-hospital mortality was significantly reduced ( p  = .02). CRP guided reduced antibiotic use duration, but there was no statistically significant difference in other outcomes including length of hospital stay, 28-day mortality, and infection recurrence. Procalcitonin-guided antibiotics therapy was shown to be effective and safe in the reduction of antibiotics duration in both sepsis and respiratory tract infections. More research is needed to prove that CRP-guided therapy is safe and effective to determine the antibiotic duration in adult hospitalized patients. PROSPERO (CRD42021264167).

Antibiotics duration guided by biomarkers in hospitalized adult patients; a systematic review and meta-analysis