1. What is the Emmett Calculation for Corrected Sodium?

The Emmett calculation estimates the corrected sodium level in hyperglycemic patients. It accounts for the dilutional effect of high glucose levels on measured sodium concentrations.

2. How Does the Calculator Work?

The calculator uses the Emmett equation:

Where:

• \( Na \) — Measured sodium concentration (mEq/L)
• \( Glucose \) — Blood glucose level (mg/dL)

Explanation: The equation adjusts the measured sodium level based on how much the glucose level exceeds the normal threshold of 100 mg/dL.

3. Importance of Corrected Sodium Calculation

Details: Accurate sodium correction is crucial in diabetic patients with hyperglycemia to properly assess electrolyte status and guide treatment decisions.

4. Using the Calculator

Tips: Enter sodium in mEq/L and glucose in mg/dL. All values must be valid (sodium > 0, glucose > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why correct sodium for glucose?
A: High glucose causes osmotic fluid shifts that dilute sodium. Correction provides a more accurate assessment of true sodium status.

Q2: What is the normal range for corrected sodium?
A: Normal range is 135-145 mEq/L, same as uncorrected sodium.

Q3: When should this correction be applied?
A: Primarily in patients with significant hyperglycemia (glucose > 200 mg/dL).

Q4: Are there alternative correction formulas?
A: Yes, some use a divisor of 50 or 40 for more severe hyperglycemia (>400 mg/dL).

Q5: Does this apply to all hyperglycemic states?
A: The formula works best for hyperglycemia due to diabetes mellitus.