For a premature baby needing PPV, an initial oxygen concentration of 21–30% is recommended to minimize oxygen toxicity and complications like ROP. Option A is correct.
If a baby who is less than 35 weeks needs Positive Pressure Ventilation (PPV), the recommended initial oxygen concentration is 21–30%. This concentration is chosen to reduce the risk of oxygen toxicity and other complications associated with high levels of supplemental oxygen, such as retinopathy of prematurity (ROP) where high oxygen concentrations can damage the developing retinal vessels of the premature infant.
Over time, oxygen levels can be adjusted based on the baby's oxygen saturation and clinical condition, but the initial low concentration is aimed at mirroring the fetal oxygen environment where oxygen levels are lower than after birth.
Hence, A. is the correct option.
--The given question is incomplete, the complete question is
"If a baby who is less than 35 weeks needs PPV how much oxygen should be given? A) 21–30% B) 45–50% C) 91-95%."--