🔥 Abbreviated Burn Severity Index (ABSI)
UsePrognosticate and guide burn-center referral after major burns.
SourceTobiasen J, et al. The Abbreviated Burn Severity Index. Ann Emerg Med 1982
This-shift next steps
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Methodology · worked example, guidelines & full notes
ABSI ≥ 6 warrants burn-center referral.
When to use
Prognosticate and guide burn-center referral after major burns.
How it works
ABSI = sex (female 1) + age band (1–5) + inhalation injury (1) + full-thickness burn (1) + %TBSA band (1–10). Higher = lower survival.
Key points
- ABSI ≥ 6 warrants burn-center referral.
- Survival figures are historical estimates.
- %TBSA can be estimated with the rule of nines.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Sex | Male (0) |
|---|---|
| Age | 41–60 (3) |
| Inhalation injury | No (0) |
| Full-thickness (3rd degree) burn | No (0) |
| Burn area %TBSA | 41–50 (5) |
→ABSI8
- Severity:8 → Severe (estimated survival ≈ 50–70%)
- Referral:ABSI ≥ 6, high-voltage electrical burns, major associated injuries, or full-thickness burns of face/axilla/joints/hands/feet/perineum → consider a burn center
- Note:%TBSA may be estimated with the rule of nines (second-degree and deeper only). Survival figures are historical estimates; modern critical and burn care improve outcomes
| Sex | Male (0) |
|---|---|
| Age | 0–20 y (1) |
| Inhalation injury | No (0) |
| Full-thickness (3rd degree) burn | No (0) |
| Burn area %TBSA | 1–10% (1) |
→ABSI2
- Severity:2 → Very mild (estimated survival ≈ 99%)
- Referral:ABSI ≥ 6, high-voltage electrical burns, major associated injuries, or full-thickness burns of face/axilla/joints/hands/feet/perineum → consider a burn center
- Note:%TBSA may be estimated with the rule of nines (second-degree and deeper only). Survival figures are historical estimates; modern critical and burn care improve outcomes
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Abbreviated Burn Severity Index (ABSI)?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Abbreviated Burn Severity Index (ABSI) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Abbreviated Burn Severity Index (ABSI) calculated in practice? Can you show a worked example?
- Inputs: Sex Male (0), Age 41–60 (3), Inhalation injury No (0), Full-thickness (3rd degree) burn No (0), Burn area %TBSA 41–50 (5) → Result: ABSI 8(Severity: 8 → Severe (estimated survival ≈ 50–70%), Referral: ABSI ≥ 6, high-voltage electrical burns, major associated injuries, or full-thickness burns of face/axilla/joints/hands/feet/perineum → consider a burn center, Note: %TBSA may be estimated with the rule of nines (second-degree and deeper only). Survival figures are historical estimates; modern critical and burn care improve outcomes) Inputs: Sex Male (0), Age 0–20 y (1), Inhalation injury No (0), Full-thickness (3rd degree) burn No (0), Burn area %TBSA 1–10% (1) → Result: ABSI 2(Severity: 2 → Very mild (estimated survival ≈ 99%), Referral: ABSI ≥ 6, high-voltage electrical burns, major associated injuries, or full-thickness burns of face/axilla/joints/hands/feet/perineum → consider a burn center, Note: %TBSA may be estimated with the rule of nines (second-degree and deeper only). Survival figures are historical estimates; modern critical and burn care improve outcomes)