Hospital costs associated with nosocomial infections in a pediatric intensive care unit

Abstract

Objective: To estimate the additional cost attributable to nosocomial infection (NI)in a pediatric intensive care unit (PICU) and related factors. Methods: A prospective cohort study was conducted in all children admitted to the PICU of a tertiarycare pediatric hospital between 2008 and 2009. Descriptive and bivariate analyses were conducted of total direct costs due to PICU stay and medical procedures in patients with and without NI. A log-linear regression model was performed to determine the factors associated with higher total cost. Results: A total of 443 patients were studied and the prevalence of NI was 11.3%. The difference in the median total cost was D 30,791.4 per patient between groups with and without NI. The median cost of PICU length of stay in patients with NI was almost eight times higher than the median cost of patients without NI. In patients with NI, the highest costs related to medical procedures were associated with antibiotics, enteral and parenteral feeding, and imaging tests. In the multivariate model, the factors associated with higher cost were infection, the performance of cardiovascular surgery, urgent admission, a higher pediatric risk mortality score, and the presence of immunosuppression. By contrast, older children and those with surgical admission generated lower cost. Conclusions: NI was associated with an increase in total cost, which implies that the prevention of these infections through specific interventions could be cost-effective and would help to increase the safety of healthcare systems.

Objetivo: El objetivo del estudio es estimar el coste adicional atribuible a la infección nosocomial (IN) en una Unidad Pediátrica de Cuidados Intensivos (UCIP) y sus factores asociados. Método: estudio de cohortes prospectivo de todos los pacientes ingresados en una UCIP de tercer nivel entre 2008 y 2009. Se realizó un análisis descriptivo y bivariante del coste total asociados a estancia en UCIP y procedimientos en pacientes con y sin IN. Mediante regresión lineal múltiple, se estimaron los factores asociados al incremento del coste total. Resultados: se estudiaron 443 pacientes, la incidencia de IN fue 11,3%. La diferencia de las medianas en el coste total fue de 30.791,4D por paciente entre los grupos con y sin IN. El coste mediano de la estancia de pacientes con IN fue casi ocho veces mayor que el coste mediano de los pacientes sin IN. En pacientes con IN, el coste asociado a procedimientos más elevado fue el de antibióticos, nutrición enteral y parenteral y pruebas de imagen. En el modelo multivariante los factores asociados con un mayor coste fueron: presencia de infección nosocomial, cirugía cardiovascular, tipo ingreso urgente, mayor índice pronóstico de mortalidad al ingreso y la presencia de inmunosupresión. Por el contrario, los de mayor edad y aquellos ingresados por cirugía presentaron un menor coste.