Test 2 Flashcards
what is the gate control theory
gate theory of pain asserts that non-painful input closes the “gates” to painful input, which prevents pain sensation from traveling to the CNS
why do we prefer epidural anesthesia as opposed to general
general passes through to the baby, epidural does not
what are the side effects of epidural anesthesia
maternal hypotension
fetal bradycardia
inability to feel the urge to void
loss of bearing down reflex
itching
cerebral spinal headache(biggest risk)
what is the cause of a cerebral spinal headache
epidural fluid leaks into the back of your skull
what are nursing interventions with epidural anesthesia
give iv fluids
encourage side lying
coach pt in pushing
monitor maternal bp & pulse
assess fetal hr
assess for orthostatic hypotension
assess bladder for distention; catheterize as needed
benefits of nitric oxide
low intervention
no need for iv access or catheter
no need for continuous monitoring
continued ability to move
self administered medication
what is included in the maternal assessment during labor and birth
vaginal exam to assess the amount of
-cervical dilation & effacement
-fetal descent and presenting part
-rupture of membranes
-amniotic fluid
-analysis of fetal hr
what is stage one in labor
begins with onset of labor and ends when the cervix is 100% effaced and completely dilated to 10 cm
the average length for a first time mother is 10-14 hours
what is stage 2 of labor
pushing stage
begins with complete effacement and dilation of the cervix and ends with delivery of baby
average length for first time mothers is 1-2 hours
what is stage 3 of labor
begins with birth of baby and ends with delivery of placenta
average length is 5-15 minutes
what are the three phases of stage 1 of labor
latent
active
transition
what is the latent phase in first stage of labor
0-6 cm dilation
cervical effacement of 0-40%
contraction frequency every 5-10 min
what is the active phase of stage 1 of labor
6-10cm dilation
cervical effacement of 40-100%
contractions stronger every 40-60 seconds and every 2-5 minutes
true discomfort
contraction intensity moderate to strong to palpation
what happens in the third stage of labor
delivery of placenta
gush of blood
lengthening of the cord
uterus is globular and firm
check to be sure it is intact
should happen within 30 min of delivery
why do we not want a contraction over 90 seconds
no relaxation for the baby
what is crowning
when the head is in the perineum but not being retracted back in
the fetal heart rate pattern is an indirect marker of what
fetal cardiac and central nervous system responses to change in bp, blood gases, and acid-base status
when is the largest complication for the mother and what is it
during the 3rd stage of labor and due to postpartum hemorrhage
in the fourth stage of labor the uterus should be
firm well contracted and located between umbilicus and pubic symphysis
why is acid base status is important
they need to correct balance in order to start breathing out of the womb
what is electronic fetal monitoring
used to establish a baseline of fetal hr
(most clearly heard through fetal back)
what must happen for internal fetal monitoring to occur
the membranes must be ruptured
what is IUPC
intrauterine pressure catheter placed inside the uterine cavity to monitor frequency, duration and intensity of contractions
what is a normal fetal heart rate
110-160 bpm
what does veal chop stand for
Variable Cord compression
Early deceleration Head compression
Acceleration Okay
Late deceleration
Placental insufficiency
what is absent or undetectable variability
not reassuring
what is minimal variability
greater than undetectable but less than 5/min
what is moderate variability
6-25 /min
what is marked variability
greater than 25/ min
what is variability
increases and decreases from baseline fetal heart rate
what is a variable deceleration
abrupt slowing of 15 or more BPM for at least 15 seconds, has an unpredictable shape (u, v, w), associated with cord compression
nursing actions for variable decelerations
change moms position(knee to chest), may give O2, stop pitocin, increase fluids
what actions are taken for early deceleration
no action required as long as it turns back to base line
NADIR means
the lowest point that the fetal heart rate reaches
when do late decelerations of fetal heart rate occur
after the peak of the contraction
what can cause late decelerations of fetal heart rate
abruption, previa, gestational diabetes
what is involved in category I of the FHR interpretation system
Normal
baseline fhr 110-160
baseline fhr variability:moderate
accelerations: present or absent
early decelerations: present or absent
variable or late decelerations: absent
what are the signs that the body is preparing for labor
effacement&dilation
lightening (when presenting part begins to descend into the true pelvis)
increased energy level(nesting)
bloody show
braxton hicks contractions
spontaneous rupture of membranes
what is the bishop score used to determine
maternal readiness for labor by evaluating whether the cervix is favorable
( dilation, effacement, consistency, position, station of presenting part)
what does a bishop score of 0 entail
dilation(cm)-closed
position- posterior
effacement (%)- 0-30%
station- -3
consistency- firm
what does a bishop score of 1 entail
dilation(cm)- 1-2
position- mid position
effacement (%)- 40-50%
station- -2
consistency- medium
what does a bishop score of 2 entail
dilation (cm)- 3-4
position- anterior
effacement (%)- 60-70%
station- -1- 0
consistency- soft
what does a bishop score of 3 entail
dilation(cm)- 5-6
position——
effacement (%)- 80%
station- +1, +2
consistency———–
what is nitrazine paper
used to check the pH of the fluid to determine if the fluid is amniotic fluid or urine after rupture of membranes (the paper will turn very dark blue when amniotic membranes are ruptured)
what is the vaginas pH vs the amniotic fluid pH
vagina- 4.5-5.5 (turns paper yellow)
Amniotic fluid- 7-7.5 (turns paper blue)
what are 3 characteristics of amniotic fluid
should be clear or straw colored
odor should NOT be foul
meconium staining could indicate some level of fetal distress
what do we assess with an apgar score
heart rate
respiratory effort
muscle tone
reflex irritability
color
what does an apgar score of 0 in each category mean
heart rate- absent
respiratory effort- no spontaneous respirations
muscle tone- limp
reflex irritability- no response to stimulation or suction
color- blue or pale
what does an apgar score of 1 in each category mean
heart rate- below 100
respiratory effort- slow; weak cry
muscle tone- minimal flexion; sluggish
reflex irritability- grimace or minimal response
color- body pink; extremeties blue
what does an apgar score of 2 in each category mean
heart rate- 100 beats or greater
respiratory effort- spontaneous strong cry
muscle tone- active flexed posture
reflex irritability - prompt response
color- completely pink; lack of cyanosis
at what times do you take an apgar
1 min & 5 min; may take at 10 mins if babys previous scores were very low
what vitals of the neonate should the nurse report
temp greater than 100.4
apical pulse less than 110 or greater than 160 bpm
respirations greater than 60 or less than 30
noisy respirations
nasal flaring or chest retractions
grunting
blood glucose less than 40
what do we assess with the babies head
feel for separation of fontanels
feels for bumps
presence of caputs
what is a caput succedaneum
localized swelling of the soft tissue of the scalp that may be caused by pressure on the head during labor and is an expected finding
what is a cephalohematoma
a collection of blood between the periosteum and the skull bone that covers it; does NOT cross the suture line, usually resolves spontaneously in 3-6 weeks
what do we assess with the baby’s face
eyes- inspect eye structures
ears- draw an imaginary line from inner to outer canthus of newborns eye; the eye should be even with the upper tip of the pinna
nose- newborns are nose breathers
mouth- assess for palate closure and strength of sucking
What are the 5 P’s of the birthing process?
Passageway (birth canal)
Passenger (fetus and
placenta)
Powers (contractions)
Position (maternal)
Psychological response
When is the fetal head “engaged”
When it reaches “0” station
How to calculate fetal stations
-Station is the measurement of fetal
descent (in cm) with station 0 being level
with the ischial spines.
-Minus number is given if above the spines
-Plus number is given if below the spines
Types of different fetal head presentaions
-cephalic
-face
-vertex
-brow
Types of fetal breech presentation
-Frank (butt first)
-complete breech
-footling breech (foot first)
what is fetal lie?
The relationship of
the maternal
longitudinal axis
(spine)to the fetal
longitudinal
access(spine)
-transverse lie and longitudinal lie are the two types
Uterine contractions: Frequency
beginning of one contraction to the beginning of the next contraction (in minutes)
Uterine contractions: Duration
Beginning to end of one contraction (in minutes)
Uterine contractions: Strength/Intensity
strength of the contraction at its peak described as mild, moderate or strong
Placenta Previa
Placenta previa occurs when the placenta abnormally implants in the
lower segment of the uterus near or over the cervical os.
Abnormal implantation results in bleeding in the 3rd trimester as the cervix begins to dilate and efface
Placental Abruption
-Normal implantation of the placenta
-Premature separation of the placenta from the uterus which can be partial or complete detachment
-Significant maternal and fetal morbidity and mortality
-Leading cause of maternal death
Ectopic pregnancy: subjective data
•Unilateral pain in the lower abdominal quadrants
•+/- bleeding
•Referred shoulder pain if rupture with peritoneal cavity irritation
•Faintness, dizziness from blood loss