Detailed Rationale for Guideline 12. It can be performed by physicians, nurses, or registered dietitians during routine clinic visits. The SGA is easy to perform and can be performed within minutes during a routine clinic visit. The SGA has not been validated as a means of nutritional assessment in the pediatric PD population. It is an important index of overall nutritional status.
Norms vary by patient gender and size.
A steady-state of creatinine excretion should exist for the equation result to be valid. However, a change in serum creatinine concentration may indicate changes in creatinine and urea removal to a much larger extent than a change in serum urea concentration. A decreasing serum creatinine concentration is caused more often by progressive loss in muscle mass and less often by an increase in total clearance. In other words, increases in peritoneal solute transport or recovery of kidney function do not occur very often. The equation described in Guideline 12, Assessment of Nutritional Status, from the glossary 65 is a further modification of the original Borah equation.