Procalcitonin-guided antimicrobial stewardship in critically ill patients with sepsis: A pre– post interventional study

Aim Injudicious usage of antibiotics has led to the emergence of antibiotic resistance which is a major health-care problem in developing countries such as India. Our aim was to show how antibiotic therapy based on serial procalcitonin (PCT) assay can help in antibiotic de-escalation in septic patients. Materials and Methods A pre–post interventional study was conducted among 300 septic patients admitted to an intensive care unit (ICU). All septic patients admitted 2 months before and 2 months after the introduction of monitoring of PCT were included and they were divided into Group P (with PCT monitoring) and Group C (without PCT monitoring). The proportion of patients for whom antimicrobials were de-escalated, the average time taken to de-escalate antimicrobials, and the average duration of ICU stay were compared. Proportions and averages with standard deviations were calculated to describe the data. A test of proportions was done to compare the proportion de-escalated and a Student’s t-test was done to compare the average duration of antibiotic therapy. Results The proportion of patients in whom de-escalation of antimicrobials was done was 125 (83.33%) in Group P as compared to 92 (61.33%) in Group C. The time taken to de-escalate was 3.04 ± 0.83 days (95% confidence interval [CI] 2.89–3.18) in Group P compared to 4.7 ± 1.4 days (CI 4.41–4.98) in Group C. The duration of ICU stay was also less in Group P - 3.08 ± 0.91 days (CI 3.08–3.38) as compared to Group C - 5.16 ± 2.17 days (4.80–5.51). Conclusion Serial PCT assay-based antimicrobial therapy helped to wean patients with sepsis off antimicrobials earlier thus reducing the duration of ICU stay.