Oxygenation Index Calculator

The Oxygenation Index Calculator calculates the oxygenation index (OI), a measure of how effectively oxygen is being transferred from the lungs to the blood. It is commonly used in critical care medicine to assess oxygenation status.

Input Parameters

Calculation Results

Calculation Formula

OI = (PaO2 / FiO2) * 100

Where:
OI = Oxygenation Index
PaO2 = Partial Pressure of Oxygen in Arterial Blood (mmHg)
FiO2 = Fraction of Inspired Oxygen

Result

OI: -- cmH2O

Oxygenation Index Calculator Usage Guide

Learn how to use the Oxygenation Index Calculator and understand its significance in clinical settings.

How to Use the Calculator

  1. Enter the value for PaO2 (Partial Pressure of Oxygen in Arterial Blood) in mmHg.
  2. Enter the value for FiO2 (Fraction of Inspired Oxygen) as a decimal (e.g., 0.21 for room air).
  3. Click the "Calculate" button to compute the Oxygenation Index.
  4. The result will be displayed in cmH2O.

Understanding the Oxygenation Index

The Oxygenation Index (OI) is a critical parameter used to assess the efficiency of oxygenation in patients with respiratory distress or failure. It helps healthcare providers monitor and adjust oxygen therapy effectively.

Interpreting Results

  • Normal OI: Less than 400 cmH2O
  • Mild Hypoxemia: 400-500 cmH2O
  • Severe Hypoxemia: 500-600 cmH2O
  • Life-threatening Hypoxemia: Above 600 cmH2O

Clinical Applications

The Oxygenation Index is particularly useful in intensive care units (ICUs) for monitoring patients on mechanical ventilation, those with pneumonia, acute respiratory distress syndrome (ARDS), and other conditions requiring supplemental oxygen.