Bronchopulmonary dysplasia (BPD) is a serious lung condition that often affects premature babies who need oxygen or breathing support. Researchers wanted to see if giving extra vitamins A and D could help prevent BPD. They combined data from many studies that tested different doses of these vitamins in preterm infants. This type of study is called a network meta-analysis, which allows comparing multiple treatments at once.
The analysis included 4,357 preterm infants from several clinical trials. The babies were given either vitamin A, vitamin D, a combination, or a placebo (a dummy treatment). The main goal was to see which approach best prevented BPD. The results showed that high-dose vitamin D (800 IU or more per day) was the most effective at reducing the chance of developing BPD. High-dose vitamin A (at least 3,330 IU per day) also helped shorten the time babies needed a breathing machine.
When looking at death rates, low-dose vitamin A (less than 3,330 IU per day) was linked to the lowest number of deaths. However, the differences between the vitamin groups and the placebo were not large enough to be sure they weren't due to chance. This means we cannot say for certain that low-dose vitamin A reduces mortality.
It is important to note that this study combined results from many smaller trials. The findings are based on averages across groups, not on individual babies. Also, the researchers did not report exact numbers for how much the risk was reduced or the confidence in those numbers. This makes it harder to know how strong the effects really are.
Overall, the study suggests that giving preterm infants high-dose vitamin D might help prevent BPD, and high-dose vitamin A might shorten the time on a ventilator. Low-dose vitamin A might also be linked to lower death rates, but more research is needed to confirm this. Doctors may consider these vitamin strategies when caring for premature babies at risk for BPD.
Parents and healthcare providers should discuss the risks and benefits of vitamin supplementation with a neonatologist. Every baby is different, and what works in a study may not work for every infant. More research is needed to find the best doses and to understand long-term effects.