Background Neonates requiring long‐term parenteral nutrition (PN) are at risk for developing intestinal failure–associated liver disease (IFALD). The purpose of this study was to compare the incidence and severity of IFALD in a highly surgical neonatal population receiving mixed oil–based lipid emulsions (MOLEs) vs soybean oil–based lipid emulsions (SOLEs) for long‐term PN. Methods This retrospective cohort study evaluated patients admitted to a neonatal intensive care nursery that received PN for ≥14 days. Patients were separated into 2 cohorts; those who received SOLE and those who received MOLE. The primary outcome of this study was the occurrence of IFALD. Secondary outcomes included time to IFALD, peak bilirubin level during therapy, incidence of hypertriglyceridemia, bronchopulmonary dysplasia, and retinopathy of prematurity. Results A total of 107 patients were included in the study, IFALD occurred in 44.8% of patients receiving SOLE compared with 30% of patients receiving MOLE (relative risk, 0.67; 95% CI, 0.39–1.15). In the multivariable analysis, adjusting for the known confounders (prematurity, necrotizing enterocolitis, presence of ostomy, and duration of PN and lipids), the type of lipids was not a significant predictor for development of IFALD. Duration of PN and duration of lipids were determined to be significant risk factors for IFALD, regardless of type of lipid emulsion (odds ratio, 1.03; 95% CI, 1.01–1.05). Conclusions Use of MOLE resulted in no significant difference in the outcomes studied when compared with SOLE. Duration of PN and duration of lipids were significant risk factors for development of IFALD.
OBJECTIVE Aminoglycosides are frequently used for empiric and definitive treatment of cystic fibrosis (CF) pulmonary exacerbations. Various methods have been described for aminoglycoside therapeutic drug monitoring. The objective of this study is to evaluate the effect of patient-specific pharmacokinetic calculations for aminoglycosides used to treat CF pulmonary exacerbations. METHODS Ambidirectional cohort study of patients admitted to a children's hospital from June 1, 2018, through February 28, 2019, and June 1, 2019, through February 8, 2021. The primary outcome was the occurrence of dosing changes after analysis of initial serum concentrations in either group. Secondary outcomes included occurrence of nephrotoxicity, duration of antibiotics, and length of stay. RESULTS Twenty-four patients (75%) in the intervention group versus zero in the control group required dosing adjustments after initial analysis of serum concentrations were completed (p < 0.001). There was not a statistically significant between-group difference for duration of antibiotics in days (median, 14 vs 13.5; Z, 1.07; p = 0.29) or length of stay (median, 11 vs 11; Z, −0.31; p = 0.76). There was also not a statistically significant between-group difference in forced expiratory volume in one second (FEV1) change from admission to discharge (11.4% vs 13.9%; t, 0.61; Degrees of Freedom, 39; p = 0.55). Two patients (6.25%) in the intervention group experienced nephrotoxicity compared with zero patients in the control group (risk difference, 6.25%; 95% CI, −2.14 to 14.64; number needed to harm, 16). CONCLUSIONS Patient-specific pharmacokinetic monitoring led to significantly more dosing changes and was associated with similar patient outcomes as trough-only monitoring. Further studies are needed to identify methods to optimize aminoglycoside dosing and monitoring for these patients with the goal of reducing toxicities while maximizing efficacy.
Objective: To compare the efficacy of
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