This study focuses on premature infants who are experiencing neonatal respiratory distress, a condition where a newborn has difficulty breathing, and who require invasive ventilation, which is a method of using a machine to help a baby breathe through a tube. The purpose of the study is to evaluate whether the use of dexmedetomidine can reduce the total amount of opioids, such as morphine, sufentanil, or fentanyl, needed to manage pain and discomfort in these infants. Opioids are strong medications used to relieve pain.

During the study, infants will receive either dexmedetomidine or a placebo through an intravenous infusion, which means the medication is delivered directly into a vein. Participants will be assigned to one of these two groups by chance. The process involves monitoring the infants while they are receiving breathing support to see how the different treatments affect their need for pain medication and their overall comfort levels.