Association between Nephrotoxic Drug Combinations and Acute Kidney Injury in the Neonatal Intensive Care Unit.

OBJECTIVE: To determine the incidence of acute kidney injury (AKI) in infants exposed to nephrotoxic drug combinations admitted to 268 neonatal intensive care units managed by the Pediatrix Medical Group. STUDY DESIGN: We included infants born at 22-36 weeks gestational age, ≤120 days postnatal age, exposed to nephrotoxic drug combinations, with serum creatinine measurements available, and discharged between 2007 and 2016. To identify risk factors associated with a serum creatinine definition of AKI based on the Kidney Disease: Improving Global Outcomes criteria, we performed multivariable logistic and Cox regression adjusting for gestational age, sex, birth weight, postnatal age, race/ethnicity, sepsis, respiratory distress syndrome, baseline serum creatinine, and duration of combination drug exposure. The adjusted odds of AKI were determined relative to gentamicin + indomethacin for the following nephrotoxic drug combinations: chlorothiazide + ibuprofen; chlorothiazide + indomethacin; furosemide + gentamicin; furosemide + ibuprofen; furosemide + tobramycin; ibuprofen + spironolactone; and vancomycin + piperacillin-tazobactam. RESULTS: Among 8286 included infants, 1384 (17%) experienced AKI. On multivariable analysis, sepsis, lower baseline creatinine, and duration of combination therapy were associated with increased odds of AKI. Furosemide + tobramycin and vancomycin + piperacillin-tazobactam were associated with a decreased risk of AKI relative to gentamicin + indomethacin in both the multivariable and Cox regression models. CONCLUSIONS: In this cohort, infants receiving longer durations of nephrotoxic combination therapy had an increased odds of developing AKI.

Evaluation of the Efficacy of a Onetime Injectable Dexamethasone Administered Orally in the Pediatric Emergency Department for Asthma Exacerbation.

OBJECTIVE: This study assessed the efficacy of injectable dexamethasone administered orally in pediatric patients who presented to the emergency department with asthma exacerbation. METHODS: This was a retrospective study of patients 0 to 18 years of age who presented to and who were directly discharged from the emergency department at Moses H. Cone Memorial Hospital between September 1, 2012, and September 30, 2015, for the diagnosis of asthma or asthma exacerbation. Patients had to receive a onetime dose of injectable dexamethasone orally prior to discharge. Patients were followed for a 30-day period to identify the number of asthma relapses. RESULTS: Ninety-nine patients were included in this study. The average weight-based dose ± SD of dexamethasone was 0.35 ± 0.18 mg/kg (range, 0.08-0.62 mg/kg) and the actual dose ± SD was 10.58 ± 1.92 mg (range, 5-16 mg). Over a 30-day period, 6 patients (6%) had one repeated emergency department visit, 6 patients (6%) were admitted to the hospital, and 3 patients (3%) presented to an outpatient clinic for asthma-related symptoms. CONCLUSIONS: Injectable dexamethasone administered orally may be an efficacious treatment for asthma exacerbation in pediatric patients. A randomized control trial comparing injectable dexamethasone administered orally to other dexamethasone formulations/routes of administration should be performed to adequately assess the bioequivalence and effectiveness of the former formulation.