Urinary excretion of calcium, phosphate, magnesium, and uric acid in healthy infants and young children. Influence of feeding practices in early infancy.

Background: Reference values for urinary calcium (Ca) and other solutes/creatinine (Cr) ratios in infants and young children are scarce. Its variation with type of lactation administered, breastfed (BF) or formula (F), is incompletely known.

Methods: A total of 511 spot urine samples from 136 children, aged 6 days to < 5 years, was collected.

[Predictive markers of acute focal bacterial nephritis. A multicentre case-control study].

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.

[Not Available].

Hereditary renal hypouricemia is a rare autosomal recessive genetic disorder that involves an isolated defect in uric acid reabsorption at the renal tubules. Patients present with serum uric acid concentrations of less than 2mg/dl (119 micromol/L) with increased fractional excretion above 10%. Most of the patients are asymptomatic and are detected incidentally.

Risk of cardiovascular involvement in pediatric patients with X-linked hypophosphatemia.

Objective: To find out if cardiovascular alterations are present in pediatric patients with X-linked hypophosphatemia (XLH).

Study Design: Multicentre prospective clinical study on pediatric patients included in the RenalTube database ( www.renaltube.

Predictive factors for kidney damage in febrile urinary tract infection. Usefulness of procalcitonin.

Objective: To establish the utility of procalcitonin (PCT) and other clinical and analytical parameters as markers of acute and permanent renal damage in children after a first febrile urinary tract infection (UTI).

Methods: Retrospective multicentre study. Statistical study: descriptive, receiver operating characteristic (ROC) curves and multiple logistic regression.

Inflammatory pulmonary nodules in Kawasaki disease.

Symptomatic pulmonary manifestations of Kawasaki disease (KD) are uncommon. However, epidemiologic, radiologic, and histologic studies have indicated that respiratory symptoms and findings occur in KD and suggest that the KD agent may have a respiratory portal of entry. We report on three young infants with KD who developed pulmonary nodules, in addition to coronary artery aneurysms.