🌬️ COPD Exacerbation Early-Warning Action Plan Simulator

Stable COPD — The Reference Point

Know the usual self to catch the unusual fast.

• 380 M: COPD patients worldwide (chronic airflow limitation)
• 1–3: Exacerbations per year (typical moderate-severe COPD)
• Clear/White: Baseline sputum color (mucoid, non-infected)
• Daily: Symptom diary use (best practice tracking)

What baseline looks like

Usual daily dyspnea, stable activity tolerance.

Why baseline matters

Deviation detection needs a known personal normal.

Daily self-monitoring

Track breathlessness, sputum, and activity each day.

Early Warning Signs of Exacerbation

Rising breathlessness and sputum volume are the first flags.

• >Baseline: Dyspnea increase threshold (triggers alertness)
• +Notable: Sputum volume rise (earliest objective sign)
• ~24–48h: Median lead time (before full flare)
• ~50%: Missed early signs (exacerbations unreported)

Two cardinal early signs

Increased dyspnea plus increased sputum volume.

Why patients delay

Symptoms feel gradual, easy to dismiss as normal.

Early action benefit

Faster recognition shortens recovery time.

Purulent Sputum — The Bacterial Signal

Yellow or green sputum points to a bacterial component.

• 3 signs: Anthonisen criteria (dyspnea, volume, purulence)
• Yellow/Green: Purulent color cue (vs clear/white baseline)
• ~50–70%: Bacterial exacerbations (of flares, per studies)
• High value: Color-based antibiotic call (simple bedside marker)

The color-purulence link

Green tint correlates with neutrophil myeloperoxidase.

Anthonisen criteria

Two or three cardinal symptoms justify antibiotics.

What color does not tell

Color alone cannot confirm the exact pathogen.

Antibiotic Course Per Algorithm

Meeting threshold criteria starts a written action plan.

• 5–7 days: Typical antibiotic course (per guideline duration)
• Amox/Doxy/Macrolide: First-line options (uncomplicated flares)
• Day 1: Action plan start (symptom-triggered self-start)
• ~40%: Hospitalization avoided (with early action plans)

Trigger threshold

Two of three cardinal symptoms crosses the line.

Written action plan

Pre-agreed steps let patients self-start therapy.

Follow-up check

Reassess response within 48–72 hours.

Corticosteroid Burst for Severe Flares

Severe exacerbations add a short oral steroid course.

• 40 mg/day: Prednisone dose (typical short course)
• 5 days: Course length (per current guidelines)
• ~1–2 days: Recovery time cut (vs no steroid)
• All 3 signs: Severe flare marker (plus functional decline)

When steroids are added

Severe dyspnea limiting daily activities warrants it.

Short-course rationale

Five days matches longer courses, fewer side effects.

Combined therapy outcome

Antibiotic plus steroid speeds functional recovery.