Pulmonary Function Test Interpretation Calculator

Pulmonary Function Test Interpretation Calculator calculator can be used to interpret various pulmonary function test results.

Input Parameters

Calculation Results

Calculation Formula

FEV1/FVC Ratio = FEV1 / FVC

Where:
FEV1: Forced Expiratory Volume in 1 second
FVC: Forced Vital Capacity

Interpretation

Pulmonary Function Test Interpretation Calculator Calculator Usage Guide

Learn how to use the Pulmonary Function Test Interpretation Calculator calculator and its working principles

How to Use the Calculator

  1. Enter the Forced Vital Capacity (FVC) in liters.
  2. Enter the Forced Expiratory Volume in 1 second (FEV1) in liters.
  3. Enter your age in years.
  4. Select your sex (Male or Female).
  5. Click the "Calculate" button to get the FEV1/FVC ratio and interpretation.

Understanding the Results

The calculator provides the FEV1/FVC ratio, which is a key indicator of lung function. The ratio is compared to age- and sex-specific normal values to determine if the result is normal or abnormal.

Normal Range: Generally, an FEV1/FVC ratio of 0.70 or higher is considered normal, but this can vary based on age and sex.

Abnormal Range: An FEV1/FVC ratio below the normal range may indicate obstructive lung disease, such as asthma or chronic obstructive pulmonary disease (COPD).