📋 Table 85.2 · The Phoenix Sepsis Score

Nelson Textbook of Pediatrics 22nd Edition — Chapter 85 | Four-organ system model (respiratory, cardiovascular, coagulation, neurologic) for pediatric sepsis and septic shock. Points-based scoring for organ dysfunction. Sepsis = suspected infection + Phoenix Sepsis Score ≥2 points. Septic shock = sepsis + ≥1 cardiovascular point(s).

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Organ System0 points1 point2 points3 points
Respiratory (0-3 points) PaO₂:FiO₂ ≥400 or SpO₂:FiO₂ ≥292 PaO₂:FiO₂ <400 on any respiratory support OR SpO₂:FiO₂ <292 on any respiratory support PaO₂:FiO₂ 100-200 and IMV OR SpO₂:FiO₂ 148-220 and IMV PaO₂:FiO₂ <100 and IMV OR SpO₂:FiO₂ <148 and IMV
Cardiovascular (0-6 points) 1 point each (up to 3 points): Vasoactive medication (any dose) — 1 point per medication, max 3 points.
2 points each (up to 6 points): Lactate ≥5 mmol/L (2 points), ≥11 mmol/L (additional points).
Also age-based mean arterial pressure thresholds (points for low BP).
≥2 vasoactive medications + lactate elevation → up to 6 points
Coagulation (0-2 points) Platelets ≥100 × 10³/μL, INR ≤1.3, D-dimer ≤2 mg/L FEU, fibrinogen ≥100 mg/dL 1 point each (max 2 points): Platelets <100 × 10³/μL OR INR >1.3 OR D-dimer >2 mg/L FEU OR fibrinogen <100 mg/dL
Neurologic (0-2 points) GCS >10, pupils reactive 2 points: GCS ≤10 OR fixed pupils bilaterally
📌 Definitions:
Sepsis = Suspected infection + Phoenix Sepsis Score ≥2 points (from any combination of the 4 organ systems).
Septic shock = Sepsis with ≥1 cardiovascular point(s).
• Scoring is based on the most abnormal values within a 24-hour period. IMV = invasive mechanical ventilation.

📋 30 MCQs — Phoenix Sepsis Score (Table 85.2)

📇 High‑Yield Review Cards (Phoenix Sepsis Score)

🩺 Calculate the Phoenix Sepsis Score

Select a scenario to calculate the Phoenix Sepsis Score and determine sepsis/septic shock.

📋 Stepwise Sepsis & Septic Shock Management

    ⚡ Reflex Prompts — Sepsis Decisions

    📖 Summary: Phoenix Sepsis Score — Nelson Table 85.2