National Institute of Child Health and Human Development Criteria for Diagnosis of Bronchopulmonary Dysplasia*
< 32 Weeks Gestational Age† | ≥ 32 Weeks Gestational Age‡ | Diagnosis |
|---|---|---|
Breathing room air at 36 weeks PMA or discharge, whichever comes first | Breathing room air by 56 days postnatal age or discharge, whichever comes first | Mild BPD |
Need for < 30% oxygen at 36 weeks PMA or discharge, whichever comes first | Need for < 30% oxygen at 56 days postnatal age or discharge, whichever comes first | Moderate BPD |
Need for ≥ 30% oxygen, positive pressure, or both at 35 weeks PMA or discharge, whichever comes first | Need for ≥ 30% oxygen, positive pressure, or both at 56 days postnatal age or discharge, whichever comes first | Severe BPD |
* These criteria are in addition to the baseline diagnostic requirement of needing> 21% oxygen for at least 28 days or continued need for supplemental oxygen at ≥ 36 weeks PMA. | ||
† Assessed at 36 weeks PMA. | ||
‡ Assessed at age 29 to 55 days. | ||
BPD = bronchopulmonary dysplasia; PMA = postmenstrual age (gestational age plus chronological age (in weeks)). | ||