Winter-Blythe Formula Calculator (Acid-Base)

Data Source and Methodology

Tutti i calcoli si basano rigorosamente sulle formule e sui dati forniti da MDCalc's Winters Formula.

The Formula Explained

Expected pCO₂ = 1.5 * [HCO₃^-] + 8 ± 2

Glossary of Variables

• Bicarbonate (HCO₃^-): The concentration of bicarbonate in the blood, measured in mEq/L.
• Expected pCO₂: The expected partial pressure of carbon dioxide in arterial blood, measured in mmHg.

Practical Example

For a bicarbonate level of 24 mEq/L, the expected pCO₂ is calculated as: 1.5 * 24 + 8 = 44 mmHg (±2).

Frequently Asked Questions (FAQ)

What is Winter's Formula?

Winter's formula is used to calculate the expected pCO₂ in metabolic acidosis.

How to use the Winter's Formula Calculator?

Input the bicarbonate value (HCO₃^-) to calculate the expected pCO₂ using Winter's formula.

Why is this calculation important?

Understanding the expected pCO₂ helps in assessing if the respiratory system is compensating properly for metabolic acidosis.

What does the ±2 mean in the formula?

The ±2 accounts for normal physiological variations in pCO₂ levels.

Can this be used for patients with respiratory disorders?

This calculator is tailored for metabolic acidosis; other formulas may be more suitable for respiratory disorders.