Bronchopulmonary dysplasia

John P Kinsella1, Anne Greenough, Steven H Abman

  • 1Department of Paediatrics, University of Colorado School of Medicine, Denver, USA. John.kinsella@uchsc.edu

PubMed

Insights

Bronchopulmonary dysplasia (BPD) is a chronic lung disease affecting premature infants, increasing hospital readmissions and long-term respiratory issues. Research is exploring new therapies to reduce lung injury and improve lung growth in affected infants.

Area of Science:

  • Neonatology
  • Pediatric Pulmonology
  • Chronic Lung Disease

Background:

  • Bronchopulmonary dysplasia (BPD) is a significant cause of morbidity and mortality in premature infants.
  • Increased survival rates of extremely premature infants have led to a rise in BPD cases.
  • BPD imposes a substantial burden on healthcare resources due to frequent hospital readmissions and persistent respiratory symptoms into adolescence.

Purpose of the Study:

  • To address the evolving understanding of BPD, including the "new BPD" characterized by chronic oxygen dependency without severe acute respiratory distress.
  • To investigate the potential for impaired postnatal lung growth as a cause of "new BPD".
  • To explore the unknown factors regarding catch-up lung growth in these infants, particularly concerning postnatal corticosteroid use.

Main Methods:

  • Review of current literature on BPD pathogenesis and clinical outcomes.
  • Analysis of the changing definitions and clinical presentations of BPD.
  • Identification of knowledge gaps concerning lung growth and therapeutic interventions.

Main Results:

  • The definition of BPD has evolved, with "new BPD" emerging in infants without severe acute respiratory distress, potentially linked to impaired lung growth.
  • Infants with BPD experience significant long-term respiratory issues and require frequent healthcare utilization.
  • The efficacy of postnatal corticosteroids on catch-up lung growth in BPD is currently unknown.

Conclusions:

  • Bronchopulmonary dysplasia presents an ongoing challenge in neonatal care, with increasing prevalence.
  • Further research is needed to understand the mechanisms of impaired lung growth in "new BPD".
  • Development of safe and effective preventive therapies and treatments to improve lung growth is a critical area for future study.

Related Concept Videos

Breathing01:05

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...
Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Chronic Obstructive Pulmonary Disease-II: Pathophysiology01:20

Chronic Obstructive Pulmonary Disease-II: Pathophysiology

Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Obstructive Pulmonary Disease II: Emphysema01:23

Chronic Obstructive Pulmonary Disease II: Emphysema

Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features01:24

Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features

Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...