Sodium Correction Formula:
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Sodium correction for hyperglycemia is a calculation used to estimate the true serum sodium level in patients with elevated blood glucose levels. Hyperglycemia can cause pseudohyponatremia by shifting water from intracellular to extracellular space.
The calculator uses the sodium correction formula:
Where:
Explanation: The formula adjusts the measured sodium level to account for the dilutional effect of hyperglycemia, providing a more accurate assessment of the patient's sodium status.
Details: Accurate sodium assessment is crucial for proper diagnosis and management of electrolyte imbalances in diabetic patients and those with hyperglycemic states. Corrected sodium values help guide appropriate fluid and electrolyte therapy.
Tips: Enter measured sodium in mEq/L and glucose in mg/dL. Both values must be valid positive numbers. The calculator will provide the corrected sodium value.
Q1: Why is sodium correction necessary in hyperglycemia?
A: Hyperglycemia causes osmotic fluid shifts that dilute serum sodium, leading to pseudohyponatremia. Correction provides the true sodium level.
Q2: What is the clinical significance of corrected sodium?
A: Corrected sodium helps assess true electrolyte status and guides appropriate treatment decisions in diabetic emergencies.
Q3: When should sodium correction be calculated?
A: Correction should be performed whenever blood glucose exceeds 100 mg/dL to accurately interpret sodium levels.
Q4: Are there different correction formulas?
A: Yes, some sources use 2.4 instead of 1.6, but 1.6 is widely accepted and provides a more conservative correction.
Q5: Does this correction apply to all hyperglycemic states?
A: The correction is most accurate for glucose levels between 100-400 mg/dL. Extreme hyperglycemia may require additional considerations.