Assessing the Effect of Nutrition Therapy on Rehospitalization Rate in Malnourished Pediatric Patients With Chronic Diseases

Background: Malnutrition is common among hospitalized children with chronic diseases and increases hospital care needs. The aim of this study is to estimate the clinical consequences of nutrition therapy (NT) after discharge.

Methods: A retrospective analysis of all pediatric inpatients with diagnosis of malnutrition hospitalized at our center from January 2017 to February 2018 was conducted. Malnutrition was assessed according to body mass index (BMI) z-score, routinely recorded in patient's files. The treatment group consists of all patients referred to nutrition assessment and treated by the clinical nutrition team; all the other patients not receiving NT are selected as the control group. The effect of NT on rehospitalization rates, length of stay (LOS), and emergency room (ER) visits was estimated for the total cohort and in a propensity score (PS) matched sample.

Results: 277 malnourished pediatric inpatients were enrolled and analyzed. NT was prescribed in 111 patients (40%). Rehospitalization rate was lower in the treated group (rate ratio [RR] = 0.797; 95% CI, 0.630-1.009); particularly, nonelective hospital admissions are considerably lower (RR = 0.556; 95% CI, 0.325-0.952). The strength of this association increased in the PS-matched sample. There is no clear evidence of NT's effect on ER visits (RR = 0.892; 95% CI, 0.580-1.373) or LOS per episode (Δ = 1.46 days; 95% CI, -3.39 to 6.31).

Conclusions: Detecting and treating malnutrition seems to promptly improve the patients' clinical course after discharge, reducing the number of subsequent hospitalizations, particularly nonelective ones, probably caused by unresolved, ongoing malnutrition.