Double-blind, non-inferiority, randomized controlled trial of dexamethasone 4, 5 and 6 mg for preventing adverse neonatal and maternal outcomes in very preterm to late preterm pregnancies between 29 0 and 36 6 weeks of gestation: study protocol

Table 1 Severity of bronchopulmonary dysplasia based on the fraction of inspired oxygen and degree of respiratory support needed

	Ventilator	CPAP/BiPAP/NIPPV/NC > 3 LPM	NC 1–3 LPM	NC < 1 LPM	O₂ hood
I	–	0.21	0.22–0.29	0.22–0.70	0.22–0.29
II	0.21	0.22–0.29	≤ 0.3	> 0.70	≤ 0.3
III	> 0.21	≥ 0.3	–	–	–
IIIa	The infant dies between DOL 14 and PMA 36 weeks due to persistent lung parenchymal disease

BiPAP bilevel positive airway pressure, CPAP continuous positive airway pressure, DOL day of life, LPM litres per minute, NC nasal cannula, NIPPV non-invasive positive pressure ventilation, O₂ hood oxygen hood, PMA postmenstrual age

ISSN: 1742-4755