Chronic lung disease (CLD) is a frequent occurrence because of the use of mechanical ventilation. Chronic lung disease (CLD), sometimes called bronchopulmonary dysplasia (BPD), can also be seen as a result of respiratory distress syndrome (RDS) and early infection of the amniotic cavity. Some infants with RDS need a ventilator to help them breathe, and in many cases this is life-saving. However, oxygen and mechanical ventilation can adversely affect the developing lungs and damaged lungs that are undergoing repair. Many of the mechanisms that protect the lungs from injury can be incompletely developed or not generated. If the infant remains in the womb, the lungs will be filled with fluid that will protect these mechanisms and allow them to develop. The longer an infant is mechanically ventilated, the more likely he or she is to develop chronic lung disease. At some point about 50% of very immature preterm infants with respiratory distress syndrome will develop chronic lung disease. In many ways, chronic lung disease is a consequence of respiratory distress syndrome and other pulmonary complications. Fortunately, severe chronic lung disease is currently rare, and most preterm infants mature without serious long-term respiratory complications. Premature infants with chronic lung disease require careful care. With fluid buildup in the lungs, preterm infants can easily stop breathing on their own and are at risk for other aspects of the disease. Chronic lung disease has become a major issue in the quality of survival of preterm infants. Mechanical ventilation Of all the therapeutic interventions to help preterm infants survive and develop normally, mechanical ventilation has perhaps had the greatest positive impact. Before the development of mechanical ventilation, many preterm infants died or suffered serious complications that affected their quality of life. Although mechanical ventilation is a life-saving technology, it can also cause many problems. The lungs of preterm infants are often fragile and may develop an inflammatory response, a common effect of respiratory distress syndrome. Premature infants need ventilators to help them breathe, but the fragile lungs can be damaged by the amount of ventilator gas pressure. For areas of the lung that are trying to repair the damage, the pressure and supplemental oxygen from the ventilator can interfere with the healing process and new tissue may not be produced properly. Some new ventilation techniques are attempting to address these issues to reduce the extent of damage to the developing lung. When a baby is able to be taken off the ventilator, he or she is still at risk for lung atrophy, which generally requires non-invasive continuous positive airway pressure (CPAP) ventilation using a soft nasal plug to provide some airflow pressure, which has helped many premature babies get off the ventilator early. The medical team will always attempt to use the lowest but effective pressure of the ventilator to avoid damage to lung tissue. In addition to carefully identifying the most appropriate ventilator setting parameters, healthcare professionals sometimes give diuretics to babies with chronic lung disease to remove excess fluid from the lungs, or provide bronchodilators to keep the lungs open. to help the baby gradually move off the ventilator so that he/she becomes more active in breathing-related activities. Many infants recover completely from chronic lung disease, but there are long-term risks including susceptibility to respiratory infections and asthma. In addition, some infants with chronic lung disease have a smaller lung capacity, which may limit the child’s motivation to be active as she grows older. Diagnosis of chronic lung disease A premature infant is considered to have chronic lung disease (CLD) if he or she has the following symptoms: still requires supplemental oxygen (or still requires mechanical ventilation or CPAP) at full term at corrected gestational age. Chest radiograph indicating chronic changes or chronic injury. Abnormal tissue growth in the lungs due to continued use of mechanical ventilation. How is chronic lung disease (CLD) diagnosed? Infants with chronic lung disease (CLD) typically have an increased respiratory rhythm and inspiratory depression, and generally slower growth. An inspiratory depression is when the chest is drawn in hard with each breath, revealing the rib cage under the skin. It usually looks like the chest wall is collapsing inward with each breath, and can be mild or severe. In infants with chronic lung disease (CLD), the lungs often appear to have increased volume on the chest radiograph, with an area of the lung that looks like patchy atelectasis or underinflation. These areas of underinflation look white on the chest radiograph. Other areas of the lungs may be emphysematous or overinflated and appear black on the chest radiograph. Emphysema is characterized by overinflation within the lung tissue, which eventually causes the tissue to lose its elasticity. Blood gas results point to low levels of oxygen and high levels of carbon dioxide in the blood, which indicates impaired gas exchange within the lungs. Blood cultures and measurement of white blood cell counts may also be taken to rule out infection. Chronic lung disease (CLD) and bronchopulmonary dysplasia (BPD) are sometimes used to describe the same lung disease, although there are differences between the two. Although both diseases cause scar tissue to form in the lungs, the fibrosis from scar formation in patients with bronchopulmonary dysplasia (BPD) generally does not heal, which causes the lungs to become hard. Abnormal fibrosis can also occur in the lungs and bronchi, which indicates cell death in these areas. In addition, infants with bronchopulmonary dysplasia (BPD) are more likely to have heart disease, especially pulmonary heart disease or right ventricular failure of the heart. Fortunately, bronchopulmonary dysplasia (BPD) disease is very rare. BPD is classified as mild, moderate, or severe, depending on the degree of respiratory assistance required at 36 weeks for infants less than 32 weeks of gestational age or at day 56 for infants older than 32 weeks of gestational age. Chronic lung disease (CLD) can be a complication of pulmonary hypertension, which is an increase in pulmonary artery pressure. Elevated pulmonary artery blood pressure may cause other complications affecting the heart. Specifically, the right ventricle of the heart may be enlarged. If the condition persists, it may gradually lead to right-sided heart failure, also known as pulmonary heart disease. These symptoms may be seen on the electrocardiogram (ECG/EKG) and two-dimensional echocardiogram (2D echo). Treatment of chronic lung disease Chronic lung disease (CLD) is caused by damage to the lungs. The development of CLD can be influenced by conditions during pregnancy or at birth, immaturity, underlying lung disease, receipt of supplemental oxygen to the lungs, use of mechanical ventilation, and the presence of infection. The longer an infant requires supplemental oxygen and mechanical ventilation, the more likely he or she is to develop chronic lung disease (CLD). Approximately 50% of very immature preterm infants with respiratory distress syndrome (RDS) will develop CLD. In many cases, CLD is inevitable in order to treat respiratory distress and other pulmonary complications. Fortunately, severe cases are rare, and most preterm infants grow up without serious long-term complications. The lungs also repair the damage caused by respiratory distress syndrome (RDS), but ventilators and excess oxygen can hinder the recovery process. The goal of treatment for chronic lung disease (CLD) is to keep the oxygen level in the blood at a reasonable level without causing lung damage. Because of the potential for lung damage from ventilators, it is best to stop mechanical ventilation in infants with CLD as soon as possible. In some cases, this also means being subjected to higher levels of CO This is called passive hyperventilation, which can be used to prevent lung damage later in life and to stimulate spontaneous breathing. Infants with chronic lung disease (CLD) may also be impaired by one or more of the following medications: diuretics, a drug that promotes urination and maintains proper fluid balance bronchodilators, which promote the airways to remain open hormones, which reduce airway inflammation mechanical ventilation antibiotics, if infection of the lungs is suspected or confirmed chronic lung disease (CLD) and bronchopulmonary dysplasia lung disease (CLD) and bronchopulmonary dysplasia (BPD) are sometimes used to describe the same lung disease, although there are differences between the two. Although both diseases cause scar tissue to form in the lungs, the fibrosis from scar formation in patients with bronchopulmonary dysplasia (BPD) generally does not heal, which causes the lungs to become hard. In addition, infants with bronchopulmonary dysplasia (BPD) are more likely to have heart disease, especially pulmonary heart disease or right ventricular failure of the heart. Fortunately, bronchopulmonary dysplasia (BPD) disease is very rare. Although careful use of ventilation techniques cannot completely prevent chronic lung disease (CLD), the damage it causes – although similar to bronchopulmonary dysplasia (BPD) – is usually not permanent. Infants with known chronic lung disease (CLD) can generally be treated with supplemental oxygen, sometimes with oxygen infusions at home for weeks or months.