What is the COPD Assessment Calculator | Lung Disease Severity Tool?

The COPD Assessment Calculator | Lung Disease Severity Tool is a free online tool that helps you perform health calculations quickly and accurately. Simply enter your values and get instant results.

How do I use the COPD Assessment Calculator | Lung Disease Severity Tool?

Enter the required values in the input fields, select your preferred units if applicable, and the calculator will automatically compute the results. The interface is designed to be intuitive and easy to use.

Is the COPD Assessment Calculator | Lung Disease Severity Tool free to use?

Yes, the COPD Assessment Calculator | Lung Disease Severity Tool is completely free to use. There are no hidden fees, subscriptions, or limitations on the number of calculations you can perform.

Can I use the COPD Assessment Calculator | Lung Disease Severity Tool on mobile devices?

Yes, the COPD Assessment Calculator | Lung Disease Severity Tool is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.

How accurate is the COPD Assessment Calculator | Lung Disease Severity Tool?

The COPD Assessment Calculator | Lung Disease Severity Tool uses precise mathematical formulas and algorithms to ensure accurate results. However, always verify critical calculations with professional standards or consultants when needed.

Home/Health/COPD Assessment

COPD Assessment Calculator

GOLD 2023 classification using CAT score, mMRC, and exacerbation history

CAT Score (COPD Assessment Test)

Rate each item from 0-5 based on how you feel

I never coughI cough all the time

I have no phlegm (mucus) in my chest at allMy chest is completely full of phlegm

My chest does not feel tight at allMy chest feels very tight

When I walk up a hill or one flight of stairs I am not breathlessWhen I walk up a hill or one flight of stairs I am very breathless

I am not limited doing any activities at homeI am very limited doing activities at home

I am confident leaving my home despite my lung conditionI am not at all confident leaving my home because of my lung condition

I sleep soundlyI do not sleep soundly because of my lung condition

I have lots of energyI have no energy at all

mMRC Dyspnea Scale

Exacerbation History (Past 12 months)

Moderate Exacerbations

Treated with antibiotics/steroids

Hospitalizations

ER visits or inpatient stays

Spirometry (Post-Bronchodilator)

FEV1 % Predicted

Requires FEV1/FVC <0.70 for COPD diagnosis

GOLD ABE Groups

Group A

Low symptoms, low risk

Group B

High symptoms, low risk

Group E

Exacerbator (≥2 moderate or ≥1 hospitalization)

GOLD 2023 simplified to ABE (removed C/D)

CAT Score Interpretation

Low impact0-9

Medium impact10-20

High impact21-30

Very high31-40

Frequently Asked Questions

Why did GOLD change from ABCD to ABE?

The 2023 GOLD update simplified grouping. Groups C and D were combined into Group E (Exacerbator) because both require similar treatment intensification regardless of symptom level.

What is the CAT score cutoff?

CAT ≥10 indicates high symptom burden and separates Group A from B. It correlates with health status and predicts outcomes better than mMRC alone.

When should ICS be added?

ICS is recommended for Group E patients with blood eosinophils ≥300 cells/μL. Avoid in patients with repeated pneumonia or eosinophils <100.

What is the most important intervention?

Smoking cessation is the single most effective intervention to slow FEV1 decline and improve outcomes. It should be offered at every visit.

How often should COPD be reassessed?

At least annually, and after exacerbations. Assess symptoms, exacerbations, lung function, inhaler technique, and adherence. Adjust treatment accordingly.

Clinical Pearl

Always confirm COPD diagnosis with post-bronchodilator FEV1/FVC <0.70. The spirometric grade (GOLD 1-4) and ABE group are separate assessments - both inform prognosis and treatment.

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FEV1/FVC Ratio Peak Flow O2 Saturation Smoking Cost

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