Sepsis — Recognition & Screening
Sepsis kills more hospitalized patients than MI or stroke — but early signs mimic a dozen other conditions. Knowing what to screen for buys the patient hours they won't get back.
Core Concept
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. The nurse's role is catching it before it progresses to septic shock. Screening relies on two validated tools. The qSOFA (quick Sequential Organ Failure Assessment) flags bedside risk using three criteria: respiratory rate ≥22, altered mentation (GCS <15), and systolic BP ≤100 mmHg. A score of ≥2 suggests organ dysfunction and warrants immediate escalation. SIRS criteria — temperature >38°C or <36°C, HR >90, RR >20, WBC >12,000 or <4,000 — remain useful for initial screening but lack specificity; many non-septic conditions trigger SIRS. The critical nursing assessment is pairing abnormal vitals with a suspected or confirmed source of infection. Early sepsis often presents as warm, flushed skin with bounding pulses (warm shock phase) due to massive vasodilation — not the cold, clammy presentation students expect. Subtle cues include unexplained tachycardia, new confusion in an elderly patient, or a lactate ≥2 mmol/L without exertion. Any two SIRS criteria plus suspected infection should trigger your facility's sepsis screening protocol immediately.
Watch Out For
Don't confuse early sepsis (warm, flushed, tachycardic with bounding pulses) with late septic shock (cold, mottled, hypotensive) — the warm phase is when recognition saves lives. Students mistake qSOFA for a diagnostic tool; it's a bedside screening trigger, not a diagnosis. SIRS criteria overlap with post-surgical states and dehydration — always pair abnormal vitals with a suspected infection source before activating the sepsis pathway.
Clinical Pearl
New confusion + tachycardia + any infection source = think sepsis first, prove otherwise later. In the elderly, altered mental status may be the only early sign.
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