Anthonisen AECOPD Criteria Antibiotic Calculator

Apply Anthonisen criteria to determine antibiotic indication in COPD exacerbation. Type I (3 criteria) or Type II (2 criteria) benefit from antibiotics.

Cardinal symptoms — tick each that is present
Type III
0 of 3 cardinal symptoms present
Recommended management

No cardinal symptoms present — this does not meet the Anthonisen criteria for an acute exacerbation.

Clinical Guidance

The Anthonisen criteria classify acute exacerbations of COPD by the presence of three cardinal symptoms: increased dyspnea, increased sputum volume, and increased sputum purulence. A type I exacerbation has all three, type II has two, and type III has one. The classification guides antibiotic use — type I and II exacerbations generally warrant antibiotics, while type III is usually managed with bronchodilators alone unless sputum is purulent.

The criteria are a decision aid, not a substitute for clinical judgment. Always combine them with the full clinical picture, including severity of illness, gas exchange, and local protocols.

Advertisement

How It Works

Apply Anthonisen criteria to determine antibiotic indication in COPD exacerbation. Type I (3 criteria) or Type II (2 criteria) benefit from antibiotics

Each component has a specific meaning:

  • Antibiotics — The antibiotics recorded for the scenario being assessed.

Note: Interpret the anthonisen criteria result against the thresholds and context described above.

How to Use

Enter the antibiotics for the scenario you are assessing. Apply Anthonisen criteria to determine antibiotic indication in COPD exacerbation. Type I (3 criteria) or Type II (2 criteria) benefit from antibiotics. Use the anthonisen criteria result to inform your calculation.

Frequently Asked Questions