Respiratory Distress Syndrome編輯

  • Lecithin:Sphingomyelin Ratio, Amniotic Fluid
    • Attempt to prevent respiratory distress syndrome (RDS) from low surfactant in early delivery, by evaluation of fetal pulmonary maturation. Amniotic fluid test for fetal maturity; indicator to determine optimal time for obstetrical intervention in cases of possible fetal distress: maternal diabetes, toxemia, hemolytic disease of the newborn (erythroblastosis fetalis), postmaturity.
  • phosphatidylglycerol (PG)
    • Evaluate fetal lung maturity; the presence of phosphatidylglycerol (PG) is evidence that the fetus is within 2-6 weeks of full-term. The incidence of respiratory distress syndrome (RDS) is very low when the L:S ratio is >2 (nondiabetic cutoff; use 3.5 or greater cutoff for diabetic mothers), in the presence of PG.
  • 早產兒比較常見
  • 過去稱為 hyaline membrane disease
  • 週數越小發生率越高
  • male > female



  • 最重要的是有 expiratory grunt


  • 數 intercostal space 有幾個來判斷 lung expension 的好壞。
  • grade I-IV
  • white out: 一遍白茫茫的變化,最嚴重。


  • 最主要的是預防早產
    • antenatal steroid (weekly repeated)
    • 可能會造成 fetal growth, brain cell 分化較差。

Stable microbubble test編輯

Surfactant therapy編輯