Definitions
Mild BPD/CLD is assigned if there is a need for
supplemental oxygen for more than 28 days but not by
36 weeks PCA.
Moderate BPD is defined as a need for supplemental
oxygen for more than 28 days but the fraction of
inspired oxygen (FiO2
) was less than 30% at 36 weeks
PCA.
Severe BPD is defined as an oxygen requirement for
more than 28 days and more than 30% FiO2
and/or
positive pressure ventilation (CPAP or ventilation) at 36
weeks PCA.