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Related Experiment Videos

Normal renal dimensions in a specific population.

Mário M R Fernandes1, Carla C S Lemos, Guilherme S Lopes

  • 1Division of Nephrology, School of Medicine, State University of Rio de Janeiro, Rio de Janeiro, Brazil.

International Braz J Urol : Official Journal of the Brazilian Society of Urology
|March 8, 2005
PubMed
Summary
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Renal dimensions in Brazilians are influenced by height and age, with established norms being inadequate. The left kidney is typically larger than the right, and height is a key factor in determining normal renal size.

Area of Science:

  • Nephrology
  • Radiology
  • Human Anatomy

Background:

  • Renal dimensions (RD) are crucial for diagnosing and prognosticating kidney diseases.
  • Establishing accurate reference ranges for RD is essential for clinical practice.

Purpose of the Study:

  • To establish normative data for renal dimensions in a Brazilian population.
  • To investigate the correlation of renal dimensions with gender, age, height, and body weight.

Main Methods:

  • A cross-sectional study involving 904 Brazilian subjects with normal excretory urographies.
  • Renal length, width, and area were measured and correlated with demographic and anthropometric data.
  • Statistical analyses included one-way Anova and covariance analysis.

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Main Results:

  • Renal dimensions showed significant associations with height, body weight, and gender (p<0.001).
  • After adjusting for height, gender and body weight did not significantly influence RD.
  • Renal length and area decreased with aging, particularly from the 7th decade onwards.
  • Height was the primary determinant of RD, especially for individuals below 1.66m.

Conclusions:

  • Existing renal dimension norms are inadequate for the Brazilian population.
  • Height is the most significant factor influencing renal dimensions in this cohort.
  • The left kidney is generally larger than the right kidney.