ABSTRACT
INTRODUCCIÓN: La nefritis focal bacteriana aguda es una infección intersticial bacteriana, localizada en el parénquima renal, que entraña mayor gravedad que la pielonefritis aguda. El objetivo del estudio es el análisis de factores predictivos que permitan su diagnóstico precoz, fundamental para un adecuado abordaje terapéutico. PACIENTES Y MÉTODOS: Estudio multicéntrico de casos y control retrospectivo. Centros participantes: hospitales de Castellón y Valencia. Periodo de estudio: 2010-2018. Casos: nefritis focal bacteriana. Controles: pielonefritis aguda. RESULTADOS: Se incluyó a un total de 158 pacientes (1:1). La mediana de edad de los casos fue 2 años. El 75% de sexo femenino. No existieron diferencias en la presentación clínica. En el análisis univariante la nefritis focal se relacionó con malformaciones del tracto urinario, bacteriemia, recuento de neutrófilos y la procalcitonina, así como las convulsiones febriles en el límite de la significación. Valores de procalcitonina ≥ 2 ng/ml tiene una OR de 4,9 (IC del 95: 1,77-13,85) de presentar nefritis focal. En el análisis multivariante las malformaciones urológicas mantuvieron la significación estadística y la procalcitonina en el límite de la significación. CONCLUSIONES: Las malformaciones del tracto urinario predisponen al desarrollo de nefritis focal bacteriana. Ante pacientes con infección del tracto urinario y factores predictivos de nefritis focal bacteriana aguda, sería recomendable la realización de una ecografía Doppler renal en fase aguda para un diagnóstico y un tratamiento adecuado
INTRODUCTION: Acute focal bacterial nephritis is an interstitial bacterial infection, localised in the renal parenchyma, which can be more serious than acute pyelonephritis. The aim of this study is the analysis of predictive factors that may lead to its early diagnosis, which is essential for an adequate therapeutic approach. PATIENTS AND METHODS: A retrospective, multicentre case and control study. The participant centres were hospitals in Castellon and Valencia. The study period was 2010-2018, with the cases being patients with focal bacterial nephritis and the patients with pyelonephritis as controls. RESULTS: A total of 158 (1:1) patients were included. The median age of the cases was 2 years and there were 75% females. There were no differences in the clinical presentation. In the univariate analysis, focal nephritis was associated with malformations of the urinary tract, bacteraemia, the neutrophil count, and procalcitonin, as well as febrile convulsions of borderline significance. Procalcitonin values ≥ 2 ng/ml had an OR of 4.9 (95% CI; 1.77-13.85) of presenting with focal nephritis. In the multivariate analysis, the urological malformations still maintained statistical significance and borderline significance for procalcitonin. CONCLUSIONS: The urinary tract malformations predispose the development of focal bacterial nephritis. In patients with a urinary tract infection and predictive factors of acute focal bacterial nephritis it would be worthwhile performing a renal Doppler ultrasound in the acute phase for its appropriate diagnosis and treatment
Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , Bacterial Infections/diagnosis , Nephritis/diagnosis , Pyelonephritis/diagnosis , Acute Disease , Bacterial Infections/microbiology , Biomarkers/metabolism , Case-Control Studies , Nephritis/microbiology , Focal Infection/diagnosis , Retrospective Studies , Urinary Tract/abnormalities , Urinary Tract Infections/complicationsABSTRACT
INTRODUCTION: Acute focal bacterial nephritis is an interstitial bacterial infection, localised in the renal parenchyma, which can be more serious than acute pyelonephritis. The aim of this study is the analysis of predictive factors that may lead to its early diagnosis, which is essential for an adequate therapeutic approach. PATIENTS AND METHODS: A retrospective, multicentre case and control study. The participant centres were hospitals in Castellon and Valencia. The study period was 2010-2018, with the cases being patients with focal bacterial nephritis and the patients with pyelonephritis as controls. RESULTS: A total of 158 (1:1) patients were included. The median age of the cases was 2 years and there were 75% females. There were no differences in the clinical presentation. In the univariate analysis, focal nephritis was associated with malformations of the urinary tract, bacteraemia, the neutrophil count, and procalcitonin, as well as febrile convulsions of borderline significance. Procalcitonin values ≥2 ng/ml had an OR of 4.9 (95%CI; 1.77-13.85) of presenting with focal nephritis. In the multivariate analysis, the urological malformations still maintained statistical significance and borderline significance for procalcitonin. CONCLUSIONS: The urinary tract malformations predispose the development of focal bacterial nephritis. In patients with a urinary tract infection and predictive factors of acute focal bacterial nephritis it would be worthwhile performing a renal Doppler ultrasound in the acute phase for its appropriate diagnosis and treatment.
