Intrapartum Assessment and Interventions Flashcards
intrapartum period
begins with the onset of regular uterine contractions (UCs) and lasts until the expulsion of the placenta.
Labor triggers
inflammatory process
genetic component
and or biomarkers in cervicovaginal fluid
Maternal factors to labor
●Uterine muscles are stretched-release of prostaglandins and oxytocin that stimulate contractions
●pressure on cervix stimulates release of oxytocin which causes contractions
● progesterone withdrawn, estrogen stimulates contractions
● Oxytocin stimulates myometrial contractions.
Fetal factors labor
●placenta deteriorates, triggering contractions
● Prostaglandin synthesis and the decider stimulates contractions
● Fetal cortisol reduces progestrogen
progesterone
quiets uterine
Lightening
descent of the fetus into the true pelvis approximately 2 weeks before term in first-time pregnancies
Braxton-Hicks
These contractions are irregular UCs that do not result in cervical change and are associated with “false labor.”
bloody show
brownish or blood-tinged cervical mucus discharge
Cervical changes
The cervix ripens, becomes soft, and may become partially effaced and begin to dilate. The woman may lose her mucous plug or have a change in discharge.
Nesting
a burst of energy or feel the need to put everything in order, which is sometimes referred to as nesting.
Less common signs of labor
1- to 3-pound weight loss and others experience diarrhea, nausea, or indigestion
Five Ps affecting labor
● Powers (the contractions)
● Passage (the pelvis and birth canal)
● Passenger (the fetus)
● Psyche (the response of the woman)
● Position (maternal postures and physical positions to facilitate labor)
Powers- contractions
involuntary UCs of labor and the voluntary pushing or bearing-down powers that combine to propel and deliver the fetus and placenta from the uterus
Leopolds maneuver
systematic way to determine the position of a fetus inside the woman’s uterus
True labor
- Pain from lower back and radiates to abdomen
- Regular contractions, intensity increases
- True signs of labor- cervical dilation
lochia rubra
is the first discharge after birth Composed of blood, shreds of fetal membranes, decidua, vernix caseosa, lanugo and membranes
Hemorrhage after labor- nursing actions
massage
have her get up if she can
straight cath if she can’t get up
Low Fluid signs
low bp
high pulse
high resp
primary causes of postpartum hemorrhage
Tone- uterine atony
Tissue- placenta problems
Trauma- rupture
Thrombin- coagulation problems
Uterine contractions
resting phase or uterine relaxation period that allows the woman and uterine muscle a pause for rest
causes dilation of cervix until 10cm
contraction phases
increment
acme
decrement
Dilation and effacement
during the first stage of labor when UCs push the presenting part of the fetus toward the cervix, causing it to open and thin out as the musculofibrous tissue of the cervix is drawn upwards
Effacement
shortening and thinning of the cervix
before dilation in first pregnancy, at the same time with following
Bearing-down powers
once the cervix is fully dilated (10 cm), and the woman feels the urge to push; she will involuntarily bear down
Ferguson reflex
The urge to push
stretching of uterus and cervix pressure causes oxytocin to release causes contractions
passage
bony pelvis and the soft tissues of the cervix, pelvic floor, vagina, and introitus (external opening to the vagina)
passenger
fetus
Molding
ability of the fetal head to change shape to accommodate/fit through the maternal pelvis
Fetal attitude or posture
relationship of fetal parts to one another, noted by the flexion or extension of the fetal joints
Fetal lie
long axis (spine) of the fetus in relationship to the long axis (spine) of the woman.
Cephalic
head first)
Breech
pelvis first
presenting part
specific fetal structure lying nearest to the cervix.
Cephalic presentations
The presenting part is the head
Vertex/brow presentation
chin up
face presentation
face first
fetal position
relation of the denominator or reference point to the maternal pelvis
Culture influences
● Who is with the woman in labor, their role, and who participates in decision making
● Preferences for use of pharmacological and non-pharmacological pain management in labor
● Who the woman wants to care for her in relation to gender and modesty
● Response to labor
expectations
● Unrealistic expectations can cause an increase in maternal anxiety.
● Women who have experienced a negative previous birthing experience are at risk for increased anxiety; women who experienced a positive previous birthing experience have lower anxiety levels.
● Current pregnancy experience with difficulty conceiving, an unplanned pregnancy, or a high-risk pregnancy may increase a woman’s anxiety and fears.
● Expectations for the birth experience are related to how childbirth is viewed by the woman
effects of support
- Shorter labor
- Decreased use of analgesia/anesthesia
- Decreased operative vaginal births or cesarean births
- Decreased need for oxytocin/uterotonics
- Increased likelihood of breastfeeding
- Increased satisfaction with the childbirth experience