1. What is the Global RPH Protein Calculator?

Definition: This calculator estimates daily protein requirements based on urine urea nitrogen (UUN) measurements.

Purpose: It helps healthcare professionals assess nitrogen balance and protein needs in clinical settings.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Protein \) — Estimated protein requirement (grams/day)
• \( UUN \) — Urine urea nitrogen (grams/day)
• \( 6.25 \) — Conversion factor (grams protein/gram nitrogen)
• \( 4 \) — Constant accounting for non-urea nitrogen losses

Explanation: The formula estimates total nitrogen losses from UUN measurement and converts it to protein equivalent.

3. Importance of Protein Estimation

Details: Accurate protein estimation helps maintain positive nitrogen balance, supports healing, and prevents protein-energy malnutrition.

4. Using the Calculator

Tips: Enter the 24-hour urine urea nitrogen value in g/day. The result provides the estimated protein requirement.

5. Frequently Asked Questions (FAQ)

Q1: What is UUN?
A: Urine urea nitrogen is a measure of nitrogen excreted in urine, reflecting protein catabolism.

Q2: Why add 4 to the UUN value?
A: This accounts for non-urea nitrogen losses through skin, feces, and other routes.

Q3: When is this calculation most useful?
A: For assessing protein needs in hospitalized patients, especially those with burns, trauma, or critical illness.

Q4: How do I collect UUN data?
A: Measure urea nitrogen in a 24-hour urine collection and multiply concentration by total volume.

Q5: Does this account for all protein needs?
A: This estimates minimum needs. Clinical judgment is needed for individual adjustments.