Unit 11

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Unit 11
2012-05-25 00:56:06

Unit 11
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  1. cervical changes and uterine contractions occuring b/t 20-37 weeks of pregnancy
    preterm labor
  2. any birth that occurs before the completion of 37 weeks of pregnancy
    preterm birth
  3. weight at the time of birth of 2500 g or less
  4. glycoproteins found in plamsa and produced during fetal life, their reappearance in the cervical canal b/t 24-34 weeks of gestation could predict preterm labor
    fetal fibronectins
  5. form of estrogen produced by the fetus that is present in plasma at 9 weeks gestation; levels have been shown to increase before preterm birth
    salivary estriol
  6. rupture of amniotic sac and leakage of fluid before 37 weeks of gestation with infection often preceding this rupture but the etiology remains unknown
    preterm premature rupture of membranes
  7. what complications can PPROM lead to
    • prolapse
    • oligohydramnios
    • (both can lead to cord compression)
  8. rupture of amniotic sac and leakage of amniotic fluid beginning at least 1 hr before the onset of labor at any gestational age
    premature rupture of membranes
  9. an intraamniotic infection of hte chorion and amnion that is potentially life-threatening for the fetus and the woman
  10. long, difficult, or abnormal labor caused by various conditions associated with 5 factors affecting labor
  11. abnormal uterine contractions that prevent the normal progress of cervical dilation and effacement or descent
    dysfunctional labor
  12. abnormal uterine activity often experienced by an anxious first time mom who is having painful and fequent contractions that are ineffective in causing cervical dilation and effacement to progress
    hypertonic uterine dysfunction and primary dysfunctional labor
  13. abnormal uterine activity that usually occurs when a woman initially makes normal progress into the active phase of labor, then uterine contractions become weak and inefficient or stop altogether
    hypotonic uterine dysfuntion or secondary uterine inertia
  14. abnormal labor caused by contractures of the pelvic diameters that reduce the capacity of the bony pelvis, including the inlet, midpelvis, outlet or any combination of these planes
    pelvic dystocia
  15. abnormal labor caused by obstruction of the birth passage by an anatomic abnormality other than that involving the bony pelvis, the obstruction may result from placenta previa, leiomyomas (uterine fibriod tumors) ovarian tumors, or a full bladder or rectum
    soft tissue dystocia
  16. abnormal labor caused by fetal anomalies, excessive fetal size, malpresentation, malposition or multifetal pregnancy
    fetal dystocia
  17. abnormal labor caused by excessive fetal size
    cephalopelvic disproportion or fetopelvic disproportion
  18. the most common fetal malposition
  19. the most common form of malpresentation
  20. attempt to turn the fetus from a breech or shoulder presentation to a vertex presentation for birth by exerting gentle, constant pressure on the abdomen
    external cephalic version
  21. observance of a woman and her fetus for a reasonable period of spontaneous active labor to assess the safety of a vaginal birth for both
    trial of labor
  22. chemcial or mechanical initiation of uterine contractions before their spontaneous onset for the purpose of bringing about the birth
    induction of labor
  23. rating system used to evaluate the inducibilty of the cervix
    bishop score
  24. what does the bishop score assess
    • dilation
    • effacement
    • station
    • cervical consistency
    • cervical position
  25. pregnancy that extends beyone the end of week 42
    post term or post date
  26. obstetric emergency in which the umbilical cord lies below the presenting part of the fetus, it may be occult (hidden) or more commonly frank (visible)
    prolapse of umbilical cord
  27. obstetric emergency in which the amniotic fluid, fetal cells, hair and other debris enter the maternal circulation triggering a rapid, complex series of pathophysiologic events that lead to life threatening symptoms including dypnea and hypotension
    amniotic fluid embolism
  28. B-adrenergic receptor agonist, IV, only drug approved by FDA for purpose of supressing uterine contractions
  29. glucocorticoid used to accelerate fetal lung maturity when there is risk for perterm birth
  30. beta-adrenergic receptor agonist often administered sub Q using a syringe or pump, it inhibits uterine activity and causes bronchodilation
  31. calcium channel blocker that relaxes smooth muscles inluding those of the contracting uterus; maternal hypotension is a major concern
  32. classification of drugs used to suppress uterine activity
  33. CNS depressant used during preterm labor for its ability to relax smooth muscles including the uterus
  34. what are the risks for preterm labor
    • < 17 yr old
    • > 34 yr old
    • small stature and underweight
    • history of preterm birth
    • multiple abortions
    • short interpregnancy interval of 1 yr or less
    • infections
  35. what is a diagnostic confirmation of preterm labor
    cervical dilation