Sodium Deficit Calculator
Health & FitnessCalculate the total sodium deficit in hyponatremia, based on total body water and target sodium.
Sodium Deficit
Total sodium deficit to reach the target level. Educational reference only, not a substitute for clinical judgment. Correction should generally proceed no faster than about 0.5 mEq/L per hour to avoid osmotic demyelination.
Total Body Water
42.0
Estimated total body water based on weight and the standard age/sex factor.
Found this calculator useful?
From Scratch To $10K/Month In 60 Days
This is a proven money making system that takes students by the hand to make at least $10,000 per month, every month. Students get 12 weeks of guided coaching in addition to the "MPS Super Funnel" and tools.
We value your privacy and promise not to sell or misuse your information. Here's our privacy policy.
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Calculator Stats
Creators
Odeh Ahwal0people find this calculator helpful
Views
Helpful
Saved
Embeds
Health & Fitness calculators
Frequently Asked Questions
What is the sodium deficit calculation used for?
It estimates the total amount of sodium needed to raise a patients serum sodium from its current low level to a target level, guiding fluid and electrolyte replacement planning in hyponatremia.
Why does the total body water factor vary by group?
Total body water as a percentage of body weight differs by age and sex, generally around 60% for children and adult males, 50% for adult females and elderly males, and 45% for elderly females, mainly due to differences in body fat percentage.
Why is slow correction emphasized?
Correcting sodium too quickly in chronic hyponatremia can cause osmotic demyelination syndrome, a serious and potentially permanent neurological injury, so correction is generally limited to about 0.5 mEq/L per hour.
Is this calculator a substitute for medical advice?
No. This is an educational reference implementation of the standard sodium deficit formula, not a substitute for a physicians clinical assessment.
Spot a mistake? Tell us what's wrong.
Request a calculator. The most-requested ones get built first in our monthly batch.
Request a calculatorWant this calculator on your website?
Embed the Sodium Deficit Calculator on any site — no code needed. Customize colors, remove branding, and track usage.
