Rotterdam (Meningococcal) Score

The Rotterdam Score predicts death rate based upon 4 items in children with Meningococcal Septic Shock, in Children.

This score was developed retrospectively from clinical and laboratory characteristics of 75 children with meningococcal sepsis. The median age of these patients was 3.2 years and ranged from 3 weeks to 17.9 years.

In this series, 21% of these patients died and 17% of survivors had serious sequelae.

Using laboratory features found to be independently associated with mortality, this scoring system has a 71% predictive value for death, 90% predictive value for survival with outcome being predicted correctly for 86% of patients.

Laboratory Test	Mean value Survivor	Mean value Nonsurvivor
Potassium	3.4 mmol or mEq/L	4.1 mmol or mEq/L
Base excess	-6.2 mmol or mEq/L	-11.4 mmol or mEq/L
Platelet count	110×10 ³ /mm ³ (×109/L)	63×10 ³ /mm ³ (×109/L)
C-Reactive protein	13.5 mg/dL (135 mg/L)	8 mg/dL (80 mg/L)

The Rotterdam Score (RS) is calculated by the following:

RS = 1.01 + (1.21 x Potassium) - (0.29 × Base Excess) - (0.024 × Platelets) - (3.75 × log serum CRP in units mg/L)

Predicted Death Rate = e ^(RS) /(1+e ^(RS) )

Reference:

Kornelisse RF, Hazelzet JA, Hop WC, et al. Meningococcal septic shock in children: clinical and laboratory features, outcome, and development of a prognostic score. Clin Infect Dis 1997;25:640-6

Potassium
unit	mmol/L mEq/L
Base excess
unit	mmol/L mEq/L
Platelet count (X 10^9/L)
C- Reactive Protein
unit	mg/dL mg/L

R e s u l t s