A baby is born at 27 weeks of gestation required mechanical ventilation for next 4 weeks & 02 for next 1 week. He maintained at room temperature subsequently. As per new Bronchopulmonary dysplasia definition, he has which of the following ?
Ans. is 'c' i.e., Severe BPD
Mild BPD
Moderate BPD
Severe BPD
No BPD