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- W2061717967 abstract "Respiratory complications of preterm birth are an important cause of infant mortality and morbidity. This article looks at how advances in perinatal care have improved outcomes for preterm infants with respiratory distress syndrome and chronic lung disease.Respiratory distress syndrome of prematurity is a major cause of morbidity and mortality in preterm infants. Primarily, respiratory distress syndrome is caused by deficiency of pulmonary surfactant. Surfactant is a complex mixture of phospholipids and proteins that reduces alveolar surface tension and maintains alveolar stability. As most alveolar surfactant is produced after about 30-32 weeks' gestation, preterm infants born before then will probably develop respiratory distress syndrome. In addition to short gestation, several other clinical risk factors have been identified. ![][1] Pathogenesis of respiratory distress syndrome is a “vicious cycle”Preterm infants with respiratory distress syndrome present immediately or soon after birth with worsening respiratory distress. The presenting features include tachypnoea (respiratory rate > 60 breaths per minute); intercostal, subcostal, and sternal recession; expiratory grunting; cyanosis; and diminished breath sounds.View this table:Risk factors for respiratory distress syndromeIf untreated, infants may become fatigued, apnoeic, and hypoxic. They may progress to respiratory failure and will need assisted ventilation. High airway pressures may be required to ventilate the stiff, non-compliant lungs, thereby increasing the risk of acute respiratory complications, such as pneumothorax, pneumomediastinum, and pulmonary interstitial emphysema. ![][2] Endotracheal intubation and ventilation: intercostal drain for pneumothoraxOver the past 20-30 years, two major advances in perinatal management—the use of antenatal corticosteroids and exogenous surfactant replacement—have greatly improved clinical outcomes for preterm infants with respiratory distress syndrome.### Antenatal corticosteroidsCorticosteroids that cross the placenta (dexamethasone or betamethasone) given to women at risk of preterm delivery accelerate fetal surfactant production and lung maturation. The beneficial effects for preterm infants, including a 40% reduced risk of mortality, respiratory distress syndrome, and intraventricular haemorrhage … [1]: /embed/graphic-1.gif [2]: /embed/graphic-2.gif" @default.
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- W2061717967 date "2004-10-21" @default.
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- W2061717967 title "Respiratory complications of preterm birth" @default.
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- W2061717967 doi "https://doi.org/10.1136/bmj.329.7472.962" @default.
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!["Respiratory complications of preterm birth are an important cause of infant mortality and morbidity. This article looks at how advances in perinatal care have improved outcomes for preterm infants with respiratory distress syndrome and chronic lung disease.Respiratory distress syndrome of prematurity is a major cause of morbidity and mortality in preterm infants. Primarily, respiratory distress syndrome is caused by deficiency of pulmonary surfactant. Surfactant is a complex mixture of phospholipids and proteins that reduces alveolar surface tension and maintains alveolar stability. As most alveolar surfactant is produced after about 30-32 weeks' gestation, preterm infants born before then will probably develop respiratory distress syndrome. In addition to short gestation, several other clinical risk factors have been identified. ![][1] Pathogenesis of respiratory distress syndrome is a “vicious cycle”Preterm infants with respiratory distress syndrome present immediately or soon after birth with worsening respiratory distress. The presenting features include tachypnoea (respiratory rate > 60 breaths per minute); intercostal, subcostal, and sternal recession; expiratory grunting; cyanosis; and diminished breath sounds.View this table:Risk factors for respiratory distress syndromeIf untreated, infants may become fatigued, apnoeic, and hypoxic. They may progress to respiratory failure and will need assisted ventilation. High airway pressures may be required to ventilate the stiff, non-compliant lungs, thereby increasing the risk of acute respiratory complications, such as pneumothorax, pneumomediastinum, and pulmonary interstitial emphysema. ![][2] Endotracheal intubation and ventilation: intercostal drain for pneumothoraxOver the past 20-30 years, two major advances in perinatal management—the use of antenatal corticosteroids and exogenous surfactant replacement—have greatly improved clinical outcomes for preterm infants with respiratory distress syndrome.### Antenatal corticosteroidsCorticosteroids that cross the placenta (dexamethasone or betamethasone) given to women at risk of preterm delivery accelerate fetal surfactant production and lung maturation. 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