Pulmonary Hypoplasia

Pulmonary hypoplasia is a condition where the lungs do not develop fully before birth, leading to smaller and less functional lungs. It primarily affects the respiratory system, which is responsible for breathing and oxygen exchange. Because the lungs are underdeveloped, it can cause serious breathing difficulties after birth. This condition often results from problems that limit the space or fluid needed for lung growth, such as oligohydramnios or congenital abnormalities. Babies with this condition may have trouble getting enough oxygen, which can affect their overall health and development. Early diagnosis and specialized care are important to manage the effects of pulmonary hypoplasia.

Pulmonary hypoplasia is defined as incomplete development of lung tissue characterized by a reduced number of airways, alveoli, and pulmonary vasculature. It typically results from decreased intrathoracic space or impaired fetal lung fluid dynamics during critical periods of lung growth. Common causes include oligohydramnios, congenital diaphragmatic hernia, and thoracic skeletal abnormalities. The condition leads to significant respiratory insufficiency and is a major cause of neonatal morbidity and mortality. Histologically, the lungs show decreased branching of the bronchial tree and reduced alveolar surface area. The severity of hypoplasia correlates with the degree of pulmonary vascular development and postnatal respiratory function.