# Combined Electrolyte Correction Plan (Na/K/Mg)

Prioritized correction plan for simultaneous Na/K/Mg disorders. Priority: Mg → K → Na. Hypomagnesemia causes refractory K wasting; hyperkalemia is an emergency. Severe hyperkalemia, ODS risk, and interaction warnings included. Derived from Adrogué 2000, Gennari 1998, Agus 1999, Huang 2007, and Whang 1994. Not medical advice.

> Canonical page: https://elysiatools.com/en/tools/fluid-electrolyte-correction

- **Category:** Health

- **Keywords:** electrolyte correction, combined electrolytes, sodium potassium magnesium, refractory hypokalemia, hypomagnesemia, magnesium replacement, electrolyte imbalance, correction priority, ods risk, nephrology, icu electrolytes

## Overview

Combined Electrolyte Correction Plan (Na/K/Mg) evaluates sodium, potassium, and magnesium results together and returns a prioritized correction plan in the order Mg → K → Na. Enter the patient’s electrolyte values, weight, sex, age group, and sodium correction limit to review estimated deficits, correction limits, interaction warnings, and emergency priorities. This tool is not medical advice.

## Inputs

- **Sodium Na⁺ (mmol/L)** (number): Measured serum sodium (mmol/L).
- **Potassium K⁺ (mmol/L)** (number): Measured serum potassium (mmol/L).
- **Magnesium Mg²⁺ (mg/dL)** (number): Measured serum magnesium (mg/dL).
- **Weight (kg)** (number): Patient body weight (kg).
- **Sex** (select)
- **Age Group** (select)
- **Na⁺ Correction Rate Limit** (select)
- **Decimal Places** (number)

## When to use

- When sodium, potassium, and magnesium abnormalities occur at the same time.
- When hypokalemia may be difficult to correct because of concurrent hypomagnesemia.
- When reviewing sodium correction limits and interaction warnings alongside electrolyte replacement priorities.

## How it works

- Enter measured sodium in mmol/L, potassium in mmol/L, magnesium in mg/dL, and patient weight in kilograms.
- Select sex, age group, and the sodium correction rate limit of 8 or 12 mmol/L per 24 hours.
- The tool assesses the three electrolyte results and orders abnormalities by correction priority, with magnesium before potassium and sodium when applicable.
- The JSON result may include abnormality count, sodium and potassium deficit estimates, recommended sodium rate, magnesium replacement guidance, and safety warnings.

## Use cases

- Reviewing simultaneous Na/K/Mg abnormalities in nephrology or intensive-care workflows.
- Identifying hypomagnesemia that may make potassium replacement refractory.
- Creating a structured JSON summary of electrolyte priorities, estimates, correction limits, and warnings.

## Frequently asked questions

### What values does the tool require?

It requires sodium, potassium, magnesium, body weight, sex, age group, and a sodium correction rate limit.

### Why is magnesium prioritized before potassium?

Hypomagnesemia can contribute to renal potassium wasting and refractory hypokalemia, so magnesium is prioritized before potassium when both are abnormal.

### Does the tool calculate sodium and potassium deficits?

Yes. The JSON output can include estimated sodium and potassium deficits when the corresponding abnormalities are present.

### What sodium correction limits are available?

You can select 8 mmol/L per 24 hours for chronic cases or 12 mmol/L per 24 hours for acute symptomatic cases.

### Is this tool medical advice?

No. It provides an informational correction plan and warnings; clinical decisions require qualified medical assessment.

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