The renal solute load from a tube feeding can be calculated as follows:
Renal Solute Load = (gm prot x 5.8) + mEq(Na + K+Cl)
Substitute 4.0 for 5.8 if the patient is a child.
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Example RSL/Fluid Needs Calculation:
Formula
intake: 2000ml
Protein content: 50 grams/L
Sodium content: 20 mEq/L
Potassium content: 25 mEq/L
Chloride content: 50 mEq/L
RSL
= (50gm pro x 5.8) +
mEq(20+25+50)
= 290+ 20+25+50
= 385 mOsm/L X 2L = 770 mOsm
practice
calculations
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