الفهرس 
ntroduction & Aim of workOnly 14 pages are availabe for public view
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Abstract
Acording to preliminary data, 1.5 percent of live births were among very low birth weight infants (less than 1,500 grams) in 2007. The proportion of very low birth weight infants has slowly climbed from just over one percent in 1980
aldosterone is a part of the renin–angiotensin–aldosteron system (RAAS) that plays an important role in regulation of blood volume and arterial pressure and in homeostasis of serum sodium and potassium
THe aim of our study was to assess the urinary aldosterone excretion (UAE) in the first 72 hours of life in very low birth weight infants and to identify some possible clinical and biochemical variables that may influence UAE.
The target population of this subject consisted of convenience sample of 30 preterm infants admitted to the (NICU), from September 2012 to March 2013 with body weight less than 1500 gm(VLBW) and gestational age equal to or less than 32 weeks in first 3 days of life.
In the exploratory analysis we found a significant posi¬tive correlation between UAE and birth weight not inde¬pendently associated to the UAE in the linear regression analysis. The influence of birth weight on aldosterone production has been controversial.