The Red Cross formula can be used to predict outcome in newborn infants with congenital diaphragmatic hernia. The formula is named after the Red Cross Children's Hospital in Cape Town, South Africa.
(1) respiratory rate in breaths per minute
(2) PaCO2 in kPa
(3) FIO2: inspired oxygen fraction from 21 to 100
(4) mean airway pressure in cm H2O
(5) PaO2 in kPa
Red Cross score =
= (respiratory rate) * (PaCO2) * (FIO2) * (mean airway pressure) / ((PaO2) * 6000)
• Division by 6000 gives a score around 1 when all of the variables are normal.
• minimum score: around 0.2 (does not reach 0)
• maximum score: around 65
• A score <= 5 indicates probable survival.
• A score > 5 indicates probable death. The mean score for those who did not survive was about 38.
Performance of score:
• predictive value of mortality: 100%
• predictive value of survival: 85%
• overall predictive value: 91.6%
To read more or access our algorithms and calculators, please log in or register.
Specialty: Pulmonology, Pedatrics