Extubation Failure in Neonates

The goal of this clinical trial is to learn which breathing support works better after removing a newborn's breathing tube. Researchers will study newborns born at 26 weeks of gestation or later. Each newborn will have received breathing support through a tube for at least 24 hours. The main questions it aims to answer are: Does noninvasive high-frequency oscillatory ventilation (nHFOV) lower the need to replace the breathing tube within 72 hours? What breathing, feeding, or other medical problems occur with each type of support? Researchers will compare nHFOV with nasal intermittent mandatory ventilation (NIMV). nHFOV provides very rapid pressure waves through the nose. NIMV provides regular, timed breaths through the nose. The researchers will compare these methods to see which works better after breathing tube removal. Participants will: Be assigned by chance to receive either nHFOV or NIMV Receive the assigned breathing support immediately after tube removal Have their breathing, oxygen level, and general condition closely monitored Have blood tests at 1, 12, and 24 hours post extubation to assess their breathing Be monitored for breathing pauses, feeding problems, and other medical problems during hospitalization