M/B Unit 3 Vocab

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  1. Ballottement
    Rebound of the fetus when the cervix is tapped during vaginal examination
  2. Dilation
    gradual widening of the cervix in the process of labor
  3. Effacement
    Cervical thinning
  4. Station
    Measurement of fetal descent in relation to the ischial spines of the maternal pelvis.
  5. APGAR Score
    A method of for rapid evaluation of the infant's cardiorespiratory adaptation after birth. Scores are done at 1 and 5 minutes. Assessments are scored 0-2 in 5 areas and the scores are totaled.
  6. Caput succedaneum
    Area of edema over the presenting part of the fetus or NB, resulting from pressure against the cervix. Usually called caput.
  7. Amniotomy
  8. Augmentation of labor
    Artificial stimulation of uterine contractions that have become ineffective.
  9. Cephalopelvic Disproportion
    Fetal head size that is too large to fit through the maternal pelvis at birth
  10. Oxytocin
    Hormone produced by the posterior pituitary gland that stimulates uterine contractions and the milk-ejection reflex; also prepared synthetically (pitocin)
  11. Variability
    Changes from baseline on the EFM; total height from peak FHR to trough FHR over a 1 minute window.
  12. Oligohydramnios
    Abnormally small volume of amniotic fluid. <500 ml at term
  13. Contraction
    The contraction and relaxation of the smooth muscles of the uterus that push the fetus down into the pelvis for delivery.
  14. Friedman Curve
    A labor curve to identify whether a woman's cervical dilation is progressing at the expected rate.
  15. Lie
    Relationship of the long axis of the fetus to the long axis of the mother.
  16. Hypertonic Uterus
    Uterine contractions that are too long or too frequent, have too short a resting interval or have an inadequate relaxation period to allow optimal uretoplacental exchange.
  17. Bloody Show
    Mixture of cervical mucus and blood from ruptured capillaries in the cervix. Bloody show often precedes labor and increases with cervical dilation.
  18. External Version
    Maneuvering of fetus externally to flip from breech to head down position.
  19. Hypotonic Uterus
    Uterine contractions that are too short or not frequent enough to push the baby down.
  20. Cord prolapse
    Displacement of the umbilical cord in front of or beside the fetal presenting part. An occult prolapse is one that is suspected on the basis of FHR patterns; the umbilical cord cannot be palpated or seen.
  21. Meconium-staining
    Amniotic fluid that is yellow-brownish from meconium being passed into the amniotic fluid before birth.
  22. Tetanic contractions
    The motor neuron has been overstimulated and cannot contract.
  23. Fetal Membranes
    Two membranes, the amnion (inner membrane) and the chorion (outer membrane) that together make the bag of water.
  24. Polyhydramnios
    Too much amniotic fluid. >2000 ml at term.
  25. Crowning
    Appearance of the fetal scalp or presenting part at the vaginal opening.
  26. Presentation
    Fetal part that first enters the pelvic inlet; the presenting part.
  27. Vacuum Extraction
    Used to assist the woman in the birth process after becoming exhausted.
  28. Episiotomy
    Surgical incision of the perineum to enlarge the vaginal opening.
  29. Fetal Intolerance
    • Decompensation; fetus stops accels
    • Acute-cord prolapse, abruption
    • Chronic-HTN, DM, post maturity
    • Fetal asphyxia results from the absence of exchange of respiratory gases.
  30. Accelerations
    Acme of 15 bpm above baseline with duration >15 seconds but <2 minutes.
  31. Baseline FHR
    110-160 bpm
  32. Decelerations
    Drop of 15 bpm for >15 seconds but <2 minutes
  33. Dystocia
    Difficult or prolonged labor, often associated with abnormal uterine activity and cephalopelvic disproportion.
  34. Chignon
    Newborn scalp edema created by a vacuum extractor.
  35. Rest period
    The time between the end of one contraction and the beginning of the next contraction.
Card Set
M/B Unit 3 Vocab
MB Unit 3 Vocab
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