“…The type of CPAP devices used varied across the studies with seven studies using a T-piece resuscitator 29,34,40,[42][43][44]46 , four using bubble CPAP 30,33,35,45 and three ventilator CPAP. 36,38,41 Nine of the 18 included studies had used blended oxygen while instituting CPAP therapy. 32,33,34,36,37,38,42,45,46 While eight studies had used a relatively lower fraction of inspired oxygen (FiO2) threshold of 0.3 -0.4 for surfactant administration 29,32,33,34,36,38,42,46 , two studies had used a threshold of ≥ 0.6 41,45 and one study had used only clinical respiratory distress score as a guide for surfactant administration.…”