Sepsis — defined by Sepsis-3 (2016) as life-threatening organ dysfunction caused by a dysregulated host response to infection — kills 270,000 Americans annually, making it the leading cause of hospital death. Every hour of delay in sepsis recognition and treatment increases mortality by 7–10%. Despite the Sepsis-3 definition superseding SIRS criteria, implementation of early recognition and bundle-based care remains inconsistent across US hospitals.
Sepsis-3 Screening: qSOFA and SOFA
qSOFA (quick SOFA): respiratory rate ≥22, altered mentation, systolic BP ≤100 — bedside screening tool for suspected infection. Sensitivity only 70% for sepsis (lower than SIRS criteria), but high specificity for poor outcomes. Best used as a rapid triage screen in non-ICU settings. Full SOFA score: uses six organ systems (respiratory — PaO2/FiO2, coagulation — platelets, liver — bilirubin, cardiovascular — MAP and vasopressor requirement, CNS — GCS, renal — creatinine). Organ dysfunction = SOFA increase ≥2 from baseline. Requires lab values — not suited for immediate bedside triage but essential for risk stratification. National Early Warning Score 2 (NEWS2): the UK's preferred sepsis screening tool shows superior performance to qSOFA in general ward patients — incorporating SpO2, respiratory rate, heart rate, BP, temperature, and consciousness.
Biomarkers and Bundle Care
Lactate: the most clinically actionable sepsis biomarker — lactate ≥4 mmol/L (septic shock) drives SEP-1 bundle; lactate ≥2 mmol/L in suspected sepsis should trigger repeat measurement and aggressive resuscitation consideration. Procalcitonin (PCT): useful for antibiotic stewardship (guiding de-escalation) and sepsis risk stratification — PCT-guided antibiotic protocols reduce antibiotic duration by 1.5–2 days without increasing mortality. CMS SEP-1 bundle (3-hour): blood cultures × 2 before antibiotics, broad-spectrum antibiotics, lactate measurement, 30 mL/kg IV crystalloid if hypotension or lactate ≥4. Bundle compliance associates with 25% mortality reduction in observational data. For ICU and emergency medicine facilities managing sepsis patients, our vascular access catalog includes large-bore IV catheters and central line kits for rapid fluid and medication delivery, and our laboratory supplies section includes blood culture collection sets and specimen tubes.
