Comprehensive Care Strategies for Hypoplastic Lung Disease: The Role of Respiratory Specialists, Nursing Leadership, and Physiotherapy in Respiratory Support

Background: Hypoplastic Lung Disease (HLD), or pulmonary hypoplasia, is a congenital condition characterized by the incomplete development of lung parenchyma, airways, and vasculature. This results in a reduced gas-exchange surface area, leading to respiratory insufficiency. It exists on a spectrum, ranging from fatal neonatal respiratory failure to milder forms presenting later in life. Etiologies are multifactorial, often secondary to conditions that restrict fetal lung growth, such as congenital diaphragmatic hernia (CDH), oligohydramnios, or thoracic compression. Aim: This review synthesizes the current understanding of HLD's mechanisms, diagnostic pathways, and comprehensive management strategies. It aims to connect developmental biology to clinical syndromes and highlight the importance of a multidisciplinary, life-course approach to improve survival and quality of life. Methods: The article is a comprehensive narrative review, consolidating evidence on the etiology, pathophysiology, epidemiology, and histopathology of HLD. It details evaluation methods, including prenatal imaging, postnatal radiology, and histologic criteria like lung weight-to-body weight ratio and radial alveolar count. Results: The prognosis of HLD is highly variable, heavily influenced by the severity of pulmonary underdevelopment and the presence of persistent pulmonary hypertension. Management is stage-specific, involving antenatal interventions (e.g., corticosteroids, fetal endoscopic tracheal occlusion), postnatal gentle respiratory support, and long-term multidisciplinary care to address chronic respiratory morbidity and associated complications. Conclusion: Effective management of HLD requires a personalized, integrated approach from prenatal diagnosis through adulthood, focusing on optimizing lung growth, protecting fragile parenchyma, and managing long-term sequelae.