title: Comparison of urinary sodium and potassium in children older than two with idiopathic hypercalciuria and a healthy control group in Bandar-Abbas, Iran, in 2013.
abstract: BACKGROUND
  Idiopathic hypercalciuria is an important cause of symptoms related to the urinary system. The urinary excretion of high sodium and low potassium is a risk factor for hypercalciuria and urolithiasis. The aim of this study was to compare the urinary excretion of sodium and potassium by children older than two with idiopathic hypercalciuria and healthy control children in Bandar-Abbas, Iran.
  
  
  METHODS
  This case control study was conducted during 2012 and 2013 in Bandar-Abbas, a city in southern Iran. The urinary excretion of sodium and potassium by 50 children with idiopathic hypercalciuria who were older than two was compared with that of 62 healthy children. IBM SPSS Statistics 21 software was used to analyze the data, and P < 0.05 was considered to be significant.
  
  
  RESULTS
  Fifty children with idiopathic hypercalciuria (21 males and 29 females) were compared with 62 healthy children (19 males and 43 females). The results of the study indicated that there were no significant differences in the mean sodium and potassium levels in the urine of the two groups of children (P = 0.401 and P = 0.479, respectively.).
  
  
  CONCLUSIONS
  The study showed no significant differences in the excretion of sodium and potassium in the urine of children with idiopathic hypercalciuria and that of healthy children in Bandar-Abbas. This finding was inconsistent with the results of similar studies conducted earlier. Therefore, more studies are needed on populations in different areas with various climates and difference races.
authors.affiliation: Pediatric diseases resident, Infectious and Tropical Diseases Research Center, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Elham
authors.initials: E
authors.lastname: Ajdadi
authors.affiliation: Pediatric nephrologist, Department of Pediatrics Nephrology, Clinical Research Development Center of Children Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Esteghamati
authors.affiliation: Pediatric nephrologist, Department of Pediatrics Nephrology, Clinical Research Development Center of Children Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Kambiz
authors.initials: K
authors.lastname: Ghasemi
authors.affiliation: Specialist in pediatric diseases, Clinical Research Development Center of Children Hospital, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.
authors.forename: Samira Zakeri
authors.initials: SZ
authors.lastname: Shahvari
keywords: idiopathic hypercalciuria; potassium; sodium; urine