Soheilipour Fahimeh, Jesmi Fatemeh, Rahimzadeh Nahid, Pishgahroudsari Mohadeseh, Almassinokian Fariba, Mazaherinezhad Ali
Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, IR Iran.
Department of Pediatric Nephrology, Iran University of Medical Sciences, Tehran, IR Iran.
Iran J Pediatr. 2016 Mar 5;26(2):e4700. doi: 10.5812/ijp.4700. eCollection 2016 Apr.
Obesity ignites numerous health and psychosocial problems and is associated with various comorbidities. Body mass index (BMI) is also independently associated with improved risk for numerous kidney disorders. As renal length is considered a vital parameter in the clinical assessment of renal patients, normal renal length has to be defined in accordance to BMI.
The aim of this study was to define normal kidney length in obese children, comparing ultrasound measurements of the kidney length in obese and non-obese children and adolescents, in order to reduce unnecessary evaluations for nephromegaly.
Fifty obese children and adolescents and 50 non-obese children and adolescents, aged 1-19 years, were selected from patients of pediatric clinics in two hospitals (Rasoul-e-Akram and Shahid Fahmideh) in Tehran between June 2010 and 2012. After the nephrologist's and endocrinologist's approval, the largest longitudinal renal dimension was measured in deep inspiration position by abdomino-pelvic ultrasonography in both groups.
It was revealed that both kidneys in obese group were significantly larger than in control group (P = 0.044 and 0.040, respectively). Obesity status, height and age were proven to be significant and independent predictors of length of both kidneys. In both groups length of left kidney was significantly larger than that of right kidney (P < 0.001).
A specific standard cut-point limit or norm gram has to be formulated for obese children and adolescents in order to facilitate the diagnosis of kidney diseases, including organomegaly, in these patients.
肥胖引发众多健康和心理社会问题，并与多种合并症相关。体重指数（BMI）也与多种肾脏疾病风险的改善独立相关。由于肾长度被认为是肾病患者临床评估中的一个重要参数，因此必须根据BMI来定义正常肾长度。
本研究的目的是确定肥胖儿童的正常肾长度，比较肥胖和非肥胖儿童及青少年的肾脏长度超声测量值，以减少对肾肿大的不必要评估。
2010年6月至2012年期间，从德黑兰两家医院（拉苏勒 - 阿克拉姆医院和沙希德·法赫米德医院）儿科门诊患者中选取了50名肥胖儿童及青少年和50名非肥胖儿童及青少年，年龄在1至19岁之间。经肾病学家和内分泌学家批准后，两组均在深吸气位通过腹部 - 盆腔超声测量肾脏最大纵向尺寸。
结果显示，肥胖组的双侧肾脏均显著大于对照组（分别为P = 0.044和0.040）。肥胖状态、身高和年龄被证明是双侧肾脏长度的显著且独立的预测因素。两组中左肾长度均显著大于右肾（P < 0.001）。
必须为肥胖儿童及青少年制定特定的标准切点限值或标准图表，以便于诊断这些患者的肾脏疾病，包括器官肿大。
