This study examines the respiratory outcomes of preterm infants born at gestational ages less than 29 weeks, spanning from birth to 24 months corrected age. It delves into the intricacies of respiratory function impairment attributable to diverse factors, such as respiratory distress syndrome, bronchopulmonary dysplasia, postnatal corticosteroids, ventilatory support, as well as nutritional aspect during NICU stay. Furthermore, it scrutinizes the incidence of chronic respiratory diseases stemming from these conditions, assessing their long-term impact on respiratory prognosis post-discharge. In addition to respiratory aspects, the research extends its focus to the growth and developmental outcomes of preterm infants. By synthesizing these multifaceted elements, the study aspires to enhance current treatments and preventative measures for respiratory conditions in preterm infants.