4.6 Article

Procalcitonin-Based Antibiotic Use for Neonatal Early-Onset Bacterial Infections: Pre- and Post-Intervention Clinical Study

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ANTIBIOTICS-BASEL
卷 12, 期 9, 页码 -

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MDPI
DOI: 10.3390/antibiotics12091426

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antibiotics; antibiotic resistance; appropriate use of antibiotics; days of antibiotic therapy; early-onset bacterial infection; procalcitonin

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This study aimed to verify the effectiveness of using the 95th percentile cutoff value of the serum procalcitonin (PCT) reference curve for diagnosing early-onset bacterial infection. The results showed that the post-intervention group had significantly lower antibiotic use and percentage of newborns receiving antibiotics compared with the pre-intervention group. The incidence of early-onset bacterial infections did not differ between the groups. This suggests that using the 95th percentile cutoff value as diagnostic criteria can promote appropriate use of antibiotics.
We previously reported the 95th percentile cutoff value of the serum procalcitonin (PCT) reference curve for diagnosing early-onset bacterial infection. We aimed to verify the effectivity of these novel diagnostic criteria by comparing antibiotic use and incidence of early-onset bacterial infection between pre- and post-introduction periods. We included newborns admitted to our neonatal intensive care unit who underwent blood tests within 72 h after birth between 2018 and 2022. The neonates were divided into the pre-intervention (admitted before the introduction, n = 737) or post-intervention (admitted after the introduction, n = 686) group. The days of antibiotics therapy (DOT) per 1000 patient days up to 6 days after birth, percentage of antibiotic use, and incidence of early-onset bacterial infection were compared between the groups. The post-intervention group had significantly lower DOT per 1000 patient days (82.0 days vs. 211.3 days, p < 0.01) and percentage of newborns receiving antibiotics compared with the pre-intervention group (79 (12%) vs. 280 (38%), respectively, p < 0.01). The incidence of early-onset bacterial infections did not differ between the groups (2% each, p = 0.99). In conclusion, our diagnostic criteria using the 95th percentile cutoff value of the serum PCT reference curve for early-onset bacterial infection were proven safe and effective, promoting appropriate use of antibiotics.

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