Sepsis in the Prehospital Setting: What EMS Providers Miss

Sepsis kills more Americans than stroke and heart attack combined, and prehospital recognition changes outcomes more than almost any other single intervention EMS provides. Yet it remains under-triaged in the field.

The clinical picture

Suspect sepsis whenever you have a known or suspected infection plus signs of systemic response: temperature > 38°C or < 36°C, HR > 90, RR > 20, or altered mental status. Elderly patients often present with only two: confusion and hypotension.

Field screening tools

qSOFA (RR ≥ 22, altered mental status, SBP ≤ 100) is fast and specific. Two of three positive on a patient with suspected infection means high-acuity transport and early notification.

Prehospital treatment

• High-flow oxygen titrated to SpO₂ ≥ 94%
• IV/IO access and a 30 mL/kg crystalloid bolus for hypotension (AEMT/Paramedic)
• Continuous ETCO₂ — a low ETCO₂ with normal SpO₂ is an early sepsis clue
• Alert the receiving facility so antibiotics can be ready on arrival

You cannot give antibiotics in the field — but every minute you shave off the door-to-antibiotic time by early recognition is a survival advantage the ED cannot recover on its own.