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      Treatment of idiopathic hypercalciuria and its impact on associated diseases Translated title: Tratamiento de la hipercalciuria idiopática y su incidencia sobre las patologías asociadas

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          Abstract

          Idiopathic hypercalciuria may be associated with urinary tract infection, hematuria, nephrolithiasis and osteopenia. In order to describe the occurrence of these concurrent conditions related to the variation in urinary calcium and hypercalciuria response to sequential therapy, with a normal protein and low sodium diet, potassium citrate and hydrochlorothiazide; 46 patients older than 4 years, with no urinary tract diseases, sphincter control and normal blood creatinine values were followed-up during 43 months. Hypercalciuria was seen to be associated with kidney stones (EAR 47%; RR 3.3), hematuria (EAR 71%; RR 2.5), urinary tract infections (EAR 57%; RR 3), and osteopenia (EAR 33%; RR 3). A normal value of urinary calcium was achieved with sequential therapy in 43 patients, but during follow-up 32 patients discontinued treatment and hypercalciuria recurred in 44% of them, in association with hematuria and urinary tract infection. Conclusions. Sequential therapy reduced hypercalciuria and the incidence of associated diseases.

          Translated abstract

          La hipercalciuria idiopática puede asociarse con infección urinaria, hematuria, nefrolitiasis y osteopenia; con los objetivos de describir la aparición de estas patologías concurrentes, relacionadas con la variación del calcio urinario y la respuesta al tratamiento secuencial de la hipercalciuria, con dieta normoproteica-hiposódica, citrato de potasio e hidroclorotiazida, controlamos durante 43 meses a 46 pacientes mayores de 4 años, sin uropatías, con control esfinteriano y creatininemias normales. Observamos que la hipercalciuria se asoció con litiasis renal (RAE 47%; RR 3,3); hematuria (RAE 71%; RR 2,5); infecciones urinarias (RAE 57%; RR 3) y osteopenia (RAE 33%; RR 3). La terapéutica secuencial normalizó el calcio urinario en 43 pacientes, pero durante el seguimiento, 32 interrumpieron el tratamiento y la hipercalciuria reapareció en 44% de ellos, asociada a hematuria e infección urinaria. Conclusiones. El tratamiento secuencial redujo la hipercalciuria y disminuyó la incidencia de patologías asociadas.

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          Osteoporosis and measurement of bone mass in children and adolescents.

          Osteoporosis increasingly is recognized as a pediatric concern. Fragility fractures occur in children and adolescents with genetic disorders and those with a variety of chronic diseases. Others may not fracture in childhood but reach adulthood with a reduced peak bone mass and increased lifelong risk of osteoporosis. This article reviews the indications for pediatric bone density testing, the strengths and limitations of densitometry methods, and the challenges of interpreting the results. The goals are to demystify the densitometry report and to clarify the role of bone density tests in assessing and managing skeletal health in children.
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            Effect of thiazides on bone mineral density in children with idiopathic hypercalciuria.

            To determine the effect of thiazide treatment on bone mineral density (BMD) in children with idiopathic hypercalciuria (IH) and osteopenia, we reviewed the case notes of 22 children aged 11.7 ± 2.7 years diagnosed with IH and osteopenia who had received thiazides for 2.4 years. The data on this group were compared with those of 32 IH children with osteopenia aged 11.2 ± 2.7 years who had not received thiazide treatment. By the end of the follow-up period, the z-BMD had improved spontaneously in 23 of the 32 control children (72%) and in 12 of the 22 patients on thiazides (54%). Although treated patients had a higher body mass index (BMI) and a higher BMD following treatment, the differences became statistically negligible when these parameters were expressed as z-BMD or as bone mineral apparent density (BMAD). In contrast, within the control group, there were significant differences in BMAD and z-BMD at the end of the follow-up. Patients who had an improved z-BMD at the end of the treatment also showed an increase in their BMI. Based on these results, we conclude that thiazide treatment does not improve the z-BMD in children with IH. More than half of the children suffering from IH enrolled in our study showed a spontaneous improvement in their z-BMD, which was more evident when the initial BMAD was not low and when their BMI increased during the follow-up period.
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              Fisiopatología de la hipercalciuria idiopática

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                aap
                Archivos argentinos de pediatría
                Arch. argent. pediatr.
                Sociedad Argentina de Pediatría (Buenos Aires )
                1668-3501
                April 2013
                : 111
                : 2
                : 0
                Article
                S0325-00752013000200005
                10.5546/aap.2013.110
                3e2813d4-935a-453c-b935-7707476c260c

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Argentina

                Self URI (journal page): http://www.scielo.org.ar/scielo.php?script=sci_serial&pid=0325-0075&lng=en
                Categories
                PEDIATRICS

                Pediatrics
                Hypercalciuria,Hematuria,Urinary tract infection,Osteopenia,Nephrolithiasis,Hipercalciuria,Infección urinaria,Nefrolitiasis

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