HMMM
Handy Medical Math Machine

COPD Exacerbation

Source: GOLD 2025–2026 · Last reviewed: Jul 2026

1
Initial Action

Assess severity. Controlled oxygen (target SpO₂ 88–92%, adapt to patient baseline). Short-acting bronchodilators (SABA + SAMA).

2
Decision

Exacerbation severity?

Mild
Bronchodilator only, outpatient
Moderate
+ systemic corticosteroid ~5 days
Severe
Inpatient, controlled O₂, consider early NIV

Antibiotic Criteria (not for every exacerbation)

Increased sputum purulenceEvidence of bacterial infectionRequiring ventilatory support
3
Decision

Persistent hypercapnic respiratory failure despite optimal NIV / contraindication to NIV?

Yes → intubation & invasive mechanical ventilation.

Adjust saturation target to patient baseline (chronic CO₂ retention risk) and local hospital protocol.