# What is the adrogue formula?

## What is the adrogue formula?

The Adrogue–Madias formula23 (formula 4 in Table 2), which calculates the predicted change in [Na] after infusion of 1 L of saline, accounts for the major factors that determine the changes in [Na] after the addition of saline to a closed system (initial [Na] and body water plus sodium concentration and volume of the …

## How is Hypernatremia correction calculated?

The first step in treating hypernatremia is estimating the water deficit.

- Water deficit = Current Total Body water x { ( Serum [Na] ÷ 140 ) – 1}
- Total body water (TBW) = 60% (0.6) of body weight for men, 50% (0.5) of body weight for women, 45% (0.45) of body weight for elderly.

**How do you calculate sodium replacement in hyponatremia?**

Formula for Sodium Correction

- Fluid rate (mL / hour) = [(1000) * (rate of sodium correction in mmol / L / hr)] / (change in serum sodium)
- Change in serum sodium = (preferred fluid selected sodium concentration – serum sodium concentration) / (total body water + 1)

**How do you calculate total body water deficit?**

Background: The water-deficit equation {WD(1) = 0.6 × B(m) × [1 – (140 ÷ Na(+))]; B(m) denotes body mass} is used in medicine and nutrition to estimate the volume (L) of water required to correct dehydration during the initial stages of fluid-replacement therapy.

### How do you calculate fluid deficit in hypernatremia?

Abstract. Background: The water-deficit equation {WD(1) = 0.6 × B(m) × [1 – (140 ÷ Na(+))]; B(m) denotes body mass} is used in medicine and nutrition to estimate the volume (L) of water required to correct dehydration during the initial stages of fluid-replacement therapy.

### Why is d5 given for hypernatremia?

In patients with hypernatremia of longer or unknown duration, reducing the sodium concentration more slowly is prudent. Patients should be given intravenous 5% dextrose for acute hypernatremia or half-normal saline (0.45% sodium chloride) for chronic hypernatremia if unable to tolerate oral water.

**How do you calculate sodium concentration?**

The serum sodium concentration is determined by the amount of sodium and potassium dissolved in body fluids, and by the volume of body water: Serum [ Na ] = Total body soluble ( Na + K) Total body water .