Paediatric Index of Mortality 3 — Paediatric Index of Mortality 3 (PIM3)
Predicted PICU mortality from data at first contact, for unit benchmarking
11 inputs
PICU calculators
Free, clinically referenced pediatric critical care scores. Every calculation runs in your browser and cites its published source.
Mortality and severity
Pediatric Risk of Mortality — Pediatric Risk of Mortality (PRISM III and PRISM IV)
Physiologic severity in the first hours of PICU care, with PRISM IV mortality
22–26 inputs
Organ dysfunction
PELOD-2 — PELOD-2 (Pediatric Logistic Organ Dysfunction-2)
Organ dysfunction severity across five systems, with predicted in-hospital mortality
11 inputspSOFA — pSOFA (Pediatric SOFA)
Sequential organ failure assessment adapted for children, six organ subscores
14 inputs
Sepsis
Phoenix Sepsis Score
The 2024 sepsis criteria for children, scored across four organ systems
15 inputs
Respiratory
Oxygen Saturation Index — Oxygen Saturation Index (OSI)
Oxygenation severity from SpO₂, without an arterial line
3 inputsOxygenation Index — Oxygenation Index (OI)
Oxygenation severity on ventilation, from mean airway pressure, FiO₂ and PaO₂
3 inputsPaO₂/FiO₂ ratio — PaO₂/FiO₂ ratio (P/F)
PaO₂ to FiO₂ ratio with the Berlin severity bands
2 inputsSpO₂/FiO₂ ratio — SpO₂/FiO₂ ratio (S/F)
SpO₂ to FiO₂ ratio for non-invasive support, when no blood gas is available
2 inputs
Fluids and resuscitation
Holliday-Segar maintenance fluids
Daily maintenance fluid volume and hourly rate from weight
1 inputPediatric burn fluid resuscitation — Pediatric burn fluid resuscitation (Parkland / modified Brooke)
24-hour crystalloid volume and hourly rates after a burn, from weight and %TBSA
4 inputsPercent cumulative fluid balance — Percent cumulative fluid balance (fluid overload %)
Cumulative fluid balance as a percentage of weight, in both published forms
4 inputsVasoactive-Inotropic Score — Vasoactive-Inotropic Score (VIS)
Vasoactive and inotropic support summed into one number, six drugs
6 inputs
Airway and equipment
ETT size and depth — ETT size and depth (pediatric)
Cuffed and uncuffed tube size and insertion depth from age
1 input
Renal and metabolic
Anion gap — Anion gap (with albumin correction)
Anion gap from electrolytes, with an albumin-corrected value for hypoalbuminaemia
5 inputsCorrected calcium for albumin
Total calcium adjusted for serum albumin
2 inputsCorrected sodium for hyperglycemia
Measured sodium adjusted for hyperglycaemia, by both published factors
2 inputsKDIGO AKI staging — KDIGO AKI staging (pediatric)
Acute kidney injury stage from creatinine and urine output
8 inputsSerum osmolality and osmolar gap — Serum osmolality (calculated) and osmolar gap
Calculated osmolality and the osmolar gap, with ethanol accounted for
5 inputs
General
APLS age-based weight estimate — APLS age-based weight estimate (pediatric)
Age-based weight estimate for when a child cannot be weighed
1 inputBody surface area — Body surface area (Mosteller)
Body surface area from height and weight, for mg/m² dosing and cardiac index
2 inputsCorrected QT interval — Corrected QT interval (QTc — Bazett & Fridericia)
Heart-rate-corrected QT interval by Bazett and Fridericia
2 inputsFOUR score — FOUR score (Full Outline of UnResponsiveness)
Coma assessment that stays complete in an intubated patient
4 inputsIdeal body weight — Ideal body weight (pediatric)
Ideal body weight from height, by four published methods side by side
2 inputsPediatric Glasgow Coma Scale — Pediatric Glasgow Coma Scale (pGCS)
Age-adapted Glasgow Coma Scale for infants and children
3 inputs
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