Pezeshki Rad Masoud, Abbasi Bita, Valizadeh Niloufar, Hatami Farbod, Tohidinezhad Fariba, Gharehbaghi Zahra
Department of Radiology, Mashhad University of Medical Sciences, Mashhad, Iran.
Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran.
Caspian J Intern Med. 2022 Summer;13(3):623-633. doi: 10.22088/cjim.13.3.623.
The normal range of kidney size is a controversial issue among different populations given to its impressibility by multiple factors, therefore, this study aimed to provide valid reference ranges for kidney dimensions in the adult population of Mashhad. Also, we assessed the association of kidney size characteristics with some personal predisposing factors.
This cross-sectional study was conducted on 938 healthy individuals. Ultrasound measurement, physical examination, and laboratory analysis were performed. Demographic, dietary, and anthropometric data were obtained. The variables were categorized into 5 groups each, and data analysis were performed using the following statistical tests: Pearson correlation test, variance analysis, t-test, and chi-square test. A value of p<0.05 was considered statistically significant.
Weight had the most association with kidney size followed to a lesser extent by height and age. Even after adjustment for other confounding variables, weight remained as an independent factor, while this effect was resolved for height and age. Also, all values for renal function, body bio-impedance, blood pressure components, and water intake were notably correlated with kidney size.
This study determined the normal kidney size in healthy adults. We also declared the normal range of kidney size is a dynamic concept and should be assessed for each individual separately according to their personal determinative factors.
鉴于肾脏大小受多种因素影响，不同人群中肾脏大小的正常范围存在争议，因此，本研究旨在为马什哈德成年人群的肾脏尺寸提供有效的参考范围。此外，我们评估了肾脏大小特征与一些个人易感因素之间的关联。
本横断面研究对938名健康个体进行。进行了超声测量、体格检查和实验室分析。获取了人口统计学、饮食和人体测量数据。将变量各分为5组，并使用以下统计检验进行数据分析：Pearson相关检验、方差分析、t检验和卡方检验。p<0.05的值被认为具有统计学意义。
体重与肾脏大小的关联最为密切，其次是身高和年龄，但程度较轻。即使在对其他混杂变量进行调整后，体重仍然是一个独立因素，而身高和年龄的这种影响则消除了。此外，肾功能、身体生物阻抗、血压成分和水摄入量的所有值均与肾脏大小显著相关。
本研究确定了健康成年人的正常肾脏大小。我们还声明，肾脏大小的正常范围是一个动态概念，应根据个人决定因素对每个人分别进行评估。
