Non-CF bronchiectasis

Bronchiectasis Severity Index

A structured calculator for estimating severity and prognosis in adults with bronchiectasis.

BSI Score 0 Not calculated

Clinical note: This tool supports clinical teaching and bedside organization. It does not replace specialist judgement, microbiology review, HRCT interpretation, or guideline-based care.

1. Demographics and nutrition

Age Points: 0 Height

Weight

Or enter BMI manually

kg/m²

BMI: not available · Points: 0

2. Lung function and symptoms

FEV₁ predicted

Points: 0 MRC Dyspnoea Score Points: 0

3. Previous events

Hospital admission in the past 2 years Points: 0 Exacerbations in the last 12 months Points: 0

4. Microbiology and HRCT severity

Colonisation status Points: 0 Radiological severity Points: 0

BSI scoring summary

Variable	0 points	1 point	2 points	3 points	4 points	5 points	6 points
Age	<50	—	50–69	—	70–79	—	≥80
BMI	≥18.5	—	<18.5	—	—	—	—
FEV₁ % predicted	>80	50–80	30–49	<30	—	—	—
Hospital admission	No	—	—	—	—	Yes	—
Exacerbations	0–2	—	≥3	—	—	—	—
MRC dyspnoea	1–3	—	4	5	—	—	—
Colonisation	Not colonised	Other chronic colonisation	—	P. aeruginosa	—	—	—
Radiology	<3 lobes	≥3 lobes or cystic changes	—	—	—	—	—

Pneumology