Relationship Between Clinical Factors and Duration of IV Antibiotic Treatment in Neonatal UTI
Melanie C. Marsh, Joshua R. Watson, Cara Holton, Nina E. Hill, Laura Saldivar, Sarah Janse, Cara Haberman
Abstract
OBJECTIVES: To describe practice patterns of intravenous (IV) antibiotic treatment duration in term neonates ≤28 days old with a urinary tract infection (UTI). METHODS: We performed a retrospective chart review of term neonates ≤28 days old hospitalized for UTI at 2 academic pediatric hospitals from 2012 to 2018. Neonates who were admitted to the PICU or with known preexisting renal and/or urologic anomalies or concomitant bacteremia were excluded. We examined clinical features, complications, and duration of IV antibiotic therapy. Univariate and multivariate analyses of long duration of IV antibiotics (>48 hours) were performed by using logistic regression. RESULTS: Of 310 neonates identified by diagnostic codes and chart review, 112 met criteria for inclusion. The median IV antibiotic duration was 49 hours (51% received IV antibiotics for >48 hours), and the median total antibiotic duration was 10 days. No demographic features or laboratory values correlated with IV antibiotic duration apart from age <7 days. The odds of long IV antibiotic duration increased if the neonate had a secondary diagnosis extending hospitalization (adjusted odds ratio [aOR] = 3.2; P = .002; 95% confidence interval [CI], 1.2–8.7), subspecialty consult (aOR = 4.79; P < .001; 95% CI, 1.87–12.3), or an abnormal renal ultrasound (aOR = 2.26; P = .02; 95% CI, 1.01–5.08). Only 1 neonate experienced treatment failure. CONCLUSIONS: Our study revealed the recent trend toward shorter IV antibiotic courses for healthy term neonates with UTI is inclusive of infants ≤28 days at these 2 sites. Few factors associated with neonates’ initial clinical presentation appear to influence the length of IV antibiotic treatment.