单词 | pulmonary surfactant |
释义 | > as lemmaspulmonary surfactant 2. Physiology. More fully pulmonary surfactant. A mixture of surface-active agents (mainly lipoproteins) coating the alveoli of the lungs, which reduce alveolar surface tension and contribute to the elasticity of the lungs.Reduced or absent pulmonary surfactant is a cause of respiratory distress syndrome of the newborn (hyaline membrane disease). ΚΠ 1964 Jrnl. Pediatrics 65 119/1 With increasing use of 100 per cent oxygen therapy..the role of pulmonary surfactant in the pathogenesis of oxygen intoxication..requires clarification. 1987 Nursing Jan. 480/1 Without surfactant, the alveoli collapse at the end of expiration, leading to impaired exchange of gases. 1992 C. A. Smith & E. J. Wood Biosynthesis viii. 172 Respiratory distress syndrome is a developmental disorder when the lungs do not produce sufficient pulmonary surfactant to allow normal respiration following birth. 2006 U.S. News & World Rep. 2 Oct. 76/2 He was unable to breathe because his immature lungs could not yet produce the substance surfactant, which keeps the lung's air sacs open. < as lemmas |
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