The burden of a kidney stone is determined by its size.
burden of a single stone =
= 0.785 * (maximum length in mm) * (maximum width in mm)
• 0.785 = PI()/4
• The equation is for the cross-sectional area of an ellipse.
total stone burden =
= SUM(stone burden for all stones present)
The higher the total stone burden the more severe the nephrolithiasis.
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Specialty: Nephrology, Clinical Laboratory