Elevated serum procalcitonin values correlate with renal scarring in children with urinary tract infection.

Serveis de Microbiologia, Hospital Universitari Germans Trias i Pujol, C/Canyet s/n, 08916 Badalona, Spain.
The Pediatric Infectious Disease Journal (Impact Factor: 3.57). 06/2003; 22(5):438-42. DOI: 10.1097/01.inf.0000066161.48499.0e
Source: PubMed

ABSTRACT Urinary tract infection (UTI) in young children carries the risk of parenchymal damage and sequelae. The location of the infection within the urinary tract influences decisions regarding both therapeutics and follow-up. Because clinical features and laboratory markers of infection at an early age are not specific, it is difficult to make a distinction between lower UTI and acute pyelonephritis. Procalcitonin (PCT) has been studied as a marker of severe bacterial infection. The aim of this study was to test the usefulness of PCT concentration in serum to distinguish between uncomplicated UTI and severe acute pyelonephritis with renal scars.
PCT was measured by immunoluminometric assay in serum samples from children with microbiologically documented infection. Severe renal involvement was assessed by 99mTc-dimercaptosuccinic acid gammagraphy done 5 to 6 months after the episode to check for the presence of parenchymal scars. C-reactive protein (CRP) and leukocyte count were also measured.
PCT at presentation showed a significant correlation (P < 0.001) with the presence of renal scars in children with UTI. Using a cutoff of 1 ng/ml for PCT and 20 mg/l for CRP, sensitivity and specificity in distinguishing between urinary tract infection with and without renal damage were 92.3 and 61.9%, respectively, for PCT and 92.3 and 34.4% for CRP. Positive and negative predictive values were 32 and 97.5%, respectively, for PCT and 23 and 95%, respectively, for CRP.
A low PCT value at admission indicates a low risk of long term renal scarring. Increased PCT values at admission correlate with the presence of scars. PCT values have proved to be more specific than CRP and leukocyte count for identifying patients who might develop renal damage.

  • [Show abstract] [Hide abstract]
    ABSTRACT: The major advances produced in infectious diseases, partly favored by technological development in the last few years, together with current changes in healthcare, have led to a new scenario in which, far from the control of infectious diseases, clinical microbiology has acquired an undoubted leading role. This new panorama implies collaboration among distinct health professionals within the same healthcare setting, with common and occasionally conflicting interests. Setting aside the individual differences that can be produced in the daily life of our hospitals, all health professionals should understand one another, not only because such cooperation is required for optimal patient care but also because synergistic collaboration among professions would improve professional development.Based on this principle of a multidisciplinary approach, collaboration and mutual respect, the moment seems opportune for the various professionals involved in infectious diseases (infectologists, internists, pediatricians and intensivists) to express their view of the specialty of clinical microbiology. The present article includes reflections, from a highly liberal and personal point of view, on how mutual relationships can be approached and on how greater knowledge of infectious diseases can continue to be gained in Spain. In all these reflections, the questions of where we come from and where we are going are explicit or implicit.
    Enfermedades Infecciosas Y Microbiologia Clinica - ENFERM INFEC MICROBIOL CLIN. 01/2010; 28:39-44.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: La decisión de hospitalizar o no un niño con Infección Urinaria (IU) no debe sustentarse de forma exclusiva en el diagnóstico de pielonefritis aguda, ya que estudios recientes han mostrado que en los pacientes con buen estado general y, sin antecedentes de uropatía importante, el tratamiento ambulatorio con antibióticos por vía oral es eficaz y seguro. Por ello, la decisión de ingreso se debe basar fundamentalmente en la valoración de la situación clínica del paciente y el riesgo estimado de complicaciones generales. En esta revisión se evalúa la eficacia y seguridad de los antibióticos que se utilizan para tratar pielonefritis aguda en niños que requieren ser hospitalizados, se especifican los agentes antibióticos óptimos, así como la vía de administración y la duración del tratamiento adecuadas para este grupo de pacientes. Asimismo, se revisan los aspectos particulares de la IU en el neonato, debido a las características especiales del sistema inmune en este grupo de edad.
    Archivos venezolanos de puericultura y pediatría 03/2011; 74(1):34-40.
  • [Show abstract] [Hide abstract]
    ABSTRACT: To evaluate the predictive value of various clinical and laboratory parameters on the identification of acute extensive and/or multifocal renal involvement in children with febrile UTI.
    Acta paediatrica (Oslo, Norway: 1992). Supplement 05/2014;


Available from
Jun 5, 2014