Recognising Sepsis in Pre-Hospital Care: A Practical Guide

Sepsis kills an estimated 48,000 people a year in the UK, and outcomes hinge on how quickly it's recognised and escalated. As a pre-hospital clinician you are often the first to see the patient — which makes your index of suspicion one of the most powerful tools in the chain of survival.

Sepsis is a clinical diagnosis

There is no single test that confirms sepsis on scene. It's a syndrome: a dysregulated response to infection that threatens organ function. Your job isn't to prove it — it's to suspect it, act, and escalate.

Think sepsis when you see…

• A likely or confirmed source of infection, plus
• Signs of physiological compromise: altered mental state, high or low respiratory rate, tachycardia, hypotension, mottled or ashen skin, reduced urine output, or a non-blanching rash.

Be especially cautious in the very young, the elderly, the immunosuppressed and post-operative patients — they can be septic without a fever.

A simple on-scene approach

1. Screen every unwell patient with a plausible infection for red flags.
2. Measure a full set of observations, including respiratory rate and conscious level — don't eyeball them.
3. Escalate early: a pre-alert buys the receiving team time to prepare.
4. Support ABCs and transport without delay when red flags are present.

The single most common failure in sepsis care is under-estimating a patient who "doesn't look that bad." Trust the numbers.

Documentation matters

Record the observations that drove your decision, the source you suspected, and the time of your pre-alert. Clear documentation supports the receiving team and protects you.

Keep the skill sharp

Recognition is a perishable skill. Regular scenario-based practice — not just reading — is what keeps it reliable under pressure. Explore our training resources and simulators to rehearse time-critical decision-making with your team.

Sepsis rewards the clinician who suspects early and acts decisively. When in doubt, treat it as sepsis and let the hospital rule it out.