Fetus

Late Deceleration

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Late Deceleration, FHR Late Deceleration

  • Definition
  1. Begins after contraction starts
  2. Ends after contraction is over
  3. Contrast with Early Deceleration
  4. Subtle Late Decelerations may also be significant
  • Causes
  1. More ominous if associated with decreased variability
  2. Fetal acidosis
  3. Fetal Hypoxemia
  4. Uteroplacental insufficiency
  • References
  1. Bailey (2000) ALSO, E:1-13
  2. Gabbe (2002) Obstetrics, p. 395
  3. Rylander (2001) Clin Fam Pract 3(2):287-305 [PubMed]