Faculty of Medicine Seyhan, Adana Dr. Turgut Noyan Training and Research Center, Department of Pediatric Nephrology, Başkent University, Adana, Turkey.
Adana Dr. Turgut Noyan Training and Research Center, Radiology Department, Başkent University, Adana, Turkey.
Pediatr Nephrol. 2020 May;35(5):901-905. doi: 10.1007/s00467-019-04464-8. Epub 2020 Jan 29.
Obesity in the pediatric population is a severe public health problem and is associated with various comorbidities. Renal length is an important clinical parameter for the diagnosis and follow-up of renal diseases. The aim of this study was to determine the relationship between renal length (measured ultrasonographically) and body mass index (BMI) in obese children, and to develop nomograms for renal length according to BMI.
Renal ultrasound was performed in 368 children without renal disease. Each child's age, gender, weight, height, and BMI (kg/m) were recorded. The children were divided into three groups according to BMI percentiles: obese group: BMI ≥ 95th percentile; overweight group: BMI 85th-94th percentile; normal weight group: BMI 5th-84th percentile.
Weight, height, BMI, and right and left renal length differed significantly between the three groups (p = 0.001). There were significant correlations between renal length with age, weight, height, and BMI. Measurement of renal length was independently associated with BMI, age, and height. BMI was used to create renal length nomograms for obese children, based on multiple regression analysis (R = 0.32 and p = 0.0001). Mean renal length was highest in the obese group (96.9 ± 13.4 mm) and lowest in the normal weight group (88.3 ± 12.9 mm).
Ultrasonographic measurement of the renal length according to BMI in children can be a useful method in evaluating these children. Smaller-than-normal kidneys can easily remain undiagnosed in obese and overweight children and this nomogram offers an additional method to evaluate the renal size in obese children.
儿童肥胖是一个严重的公共卫生问题，与各种合并症有关。肾脏长度是诊断和随访肾脏疾病的重要临床参数。本研究旨在确定肥胖儿童肾脏长度（超声测量）与体重指数（BMI）之间的关系，并根据 BMI 制定肾脏长度的列线图。
对 368 名无肾脏疾病的儿童进行了肾脏超声检查。记录每个儿童的年龄、性别、体重、身高和 BMI（kg/m）。根据 BMI 百分位数将儿童分为三组：肥胖组：BMI≥第 95 百分位数；超重组：BMI 第 85-94 百分位数；正常体重组：BMI 第 5-84 百分位数。
三组间体重、身高、BMI 及左右肾长度差异均有统计学意义（p=0.001）。肾脏长度与年龄、体重、身高和 BMI 呈显著相关。肾脏长度的测量与 BMI、年龄和身高独立相关。基于多元回归分析（R=0.32，p=0.0001），使用 BMI 为肥胖儿童创建了肾脏长度列线图。肥胖组的平均肾脏长度最高（96.9±13.4 mm），正常体重组最低（88.3±12.9 mm）。
根据 BMI 对儿童进行超声测量肾脏长度可以作为评估这些儿童的有用方法。肥胖和超重儿童中较小的肾脏容易漏诊，该列线图提供了一种额外的方法来评估肥胖儿童的肾脏大小。
