Prenatal Care and Normal Pregnancy Flashcards
normal APGAR range
7-10
APGAR score is recorded at _
and _ minutes after birth
1 and 5
an infant w. an APGAR score of _ to _ needs further eval and possible resuscitation
4-6
what does APGAR stand for
appearance
pulse
grimace
activity
respiration
normals for APGAR
a: 2 = active movement
p: 2 = pulse > 100
g: 2 = pulls away, sneeze
a: 2 = pink
r: 2 = crying
apgar score > _ = good
apgar score of _ indicates resuscitation
6
4
4 components of fetal position
size
attitude
lie
presentation
most critical component of fetal size
head size
_ disproportion is concerning for labor dystocia
cephalopelvic
what is macrosomia
birth weight > 90th %ile for gestational age or > 4500 g
macrosomia is associated w.
shoulder dystocia
birth injuries
what is fetal attitude
relationship of fetal parts to one another
i wish it were how bossy/spicy/feisty your fetus is
2 classifications of fetal attitude
fully flexed -> normal
not flexed
describe full flexion
chin on chest
rounded back
flexed arms/legs
smallest diameter of head presents at pelvic inlet
what is fetal lie
relationship of fetal cephalocaudal axis (spinal column) to maternal cephalocaudal axis
3 types of fetal lie
longitudinal -> ideal
transverse
oblique
fetal spine lies along maternal spine
longitudinal
fetal spine is perpendicular to maternal spine
transverse
fetal spine is at a slight angle to maternal spine
oblique
what is fetal presentation
fetal part that enters the pelvic inlet first
3 types of fetal presentation
cephalic
breech - bottom first
breech - shoulder first
3 types of cephalic fetal presentation
vertex
brow
face
mc type of cephalic presentation
vertex:
head completely fixed onto chest
occiput is presenting
-fetal head partially extended
-sinciput (frontal bone) is presenting part
brow presentation
-fetal head hyperextended
-fetal face from forehead to chin is presenting part
face presentation
-head up
-bottom, feet, knees present first
breech
what are the 4 types of breech
frank
complete
incomplete
shoulder
hips flexed
knees extended
bottom presents
frank breech
hips, knees flexed
bottom presents
complete breech
-one/both hips not completely flexed
-feet present
incomplete breech
-transverse lie
-shoulders present first
shoulder breech
prevalence of breech birth decreases w.
increasing gestational age
25% of fetuses under _ weeks old are breech
28
dx for breech presentation
PE
US if unclear
tx for breech presentation
- external cephalic version at or near term
- followed by trial of vaginal delivery if version is successful
- planned cesarean if persistent
24 yo G2P1 f in for 13 week office visit - fundal height and alpha fetoprotein are greater than expected for due date
multiple gestations
terms used for multiple births or the genetic relationship of their offspring
monozygotic
dizygotic
polyzygotic
multiple fetuses produced by the splitting of a single zygote
monozygotic (identical)
multiple fetuses produced by 2 zygotes
dizygotic (fraternal)
multiple fetuses produced by 2 or more zygotes
polyzygotic
3 clues for multiple gestation pregnancy
fundal height > than dates
extra fetal heart tones
elevated maternal AFP
management of multiple gestation pregnancy
more frequent prenatal visits
diet
induction vs c section at > 34 weeks
2 mc complication of multiple gestation pregnancy
spontaneous abortion
preterm birth
also:
preeclampsia
anemia
fancy word for labor
parturition
labor begins w. _
and ends w. _
uterine contractions
delivery of baby/placenta
term delivery is between _ and _ weeks gestation
37-42
_ is associated w. longer labor
nulliparas
premonitory signs of labor
cervical changes:
remoderling of cervix
cervical softening
spontaneous rupture of membranes (ROM)
what is the “blood show”
cervical softening -> expulsion of mucus plug -> pink tinged mucus
false labor is associated w.
braxton hicks contractions
describe true labor contractions (5)
regular
increase in frequency/duration/intensity
produce cervical changes
pain begins at lower back -> radiates to abdomen
pain not relieved w. ambulation
decribe braxton hicks contractions (4)
irregular/intermittent
no cervical changes
pain in abdomen
walking relieves pain
how many stages of labor are there
4
first stage of labor begins w. _
and ends w. _
onset
full dilation (10 cm)
3 stages of the first stage of labor including timeline
early: 8-12 hr
active: 3-5 hr
transition: 30 min -2 hr
describe early/latent phase of labor
8-12 hr
contractions: q 5-30 min, 30 sec each
gradually increase
cervical dilation: 0-3 cm
effeacement: 0-30%
spontaneous ROM
describe active phase of labor
3-5 hr
contractions: q 3-5 min, >/= 1 min each
cervical dilation: 3-7 cm
effacement: 80%
progressive fetal descent
describe transition phase of labor
30 min - 2 hr
contractions: q 1.5-2 min, 60-90 sec each
cervical dilation: 7-10 cm
effacement: 100%
second stage of labor lasts from _
to _
full dilation
birth of infant
second stage is aka
pushing stage
navigation of fetus thru maternal pelvis during the second stage of labor is dicatated by
3 p’s:
power
passenger
passage
frequency, duration, and intensity of uterine contractions
power -> physiologic contractions
physiology of uterine contractions involves
stimulation of the uterine _ and _ receptors (2)
myometrium
alpha and oxytocin
stimulation of _ receptor stimulates uterine contractions
alpha
steps of a uterine contraction
- wave begins in fundus and proceeds downward
- muscle shortens
- increment (build up)
- acme (peak)
- decrement (gradual letting up)
- fetal descent, effacement, dilation
the amt of pressure exerted by uterine contractions (intrauterine pressure) is measured in
mmHg
passenger portion of stage 2 of labor is affected by
fetal size, attitude, lie, presentation, breech
4 types of pelvis
gynecoid
android
anthropoid
platypelloid
-rounded pelvic inlet, midpelvis
-outlet capacity adequate
-optimal for vaginal delivery
gynecoid pelvis
-heart shaped pelvic inlet
-decreased midpelvis diameters/outlet capacity
-associated w. labor dystocia
android pelvis
-oval shaped pelvic inlet, midpelvis diameters
-outlet capacity adequate
-favorable for vaginal delivery
anthropoid pelvis
-oval shaped pelvic inlet, decreased midpelvis diameters
-outlet capacity adequate
-not favorable for vaginal delivery
platypelloid pelvis
which 2 types of pelvis are ideal/favorable for vaginal delivery
gynecoid
anthropoid
mechanisms of labor are called _ movements
cardinal
what are the 6 cardinal movements
descent
flexion
internal rotation
extension
restitution
expulsion
presenting part reaches pelvic inlet (engagement) before onset of labor
descent
fetal chin presses against chest, head meets resistance from pelvic floor
flexion
fetal shoulders internally rotate 45 degrees, widest part of shoulders in line w. widest part of pelvic inlet
internal rotation
fetal head passes under symphysis pubis and emerges from vagina
extension
head externally rotates as shoulders pass thru pelvic outlet under symphysis pubis and turns to align with back
restitution
anterior shouler slips under symphysis pubis, followed by posterior shoulder and rest of body - marks end of second stage of labor
expulsion
third stage lasts from _
to _
delivery of infant to delivery of placenta
what happens during the third stage of labor
-delivery of placenta, umbilical cord, fetal membranes
-uterus contracts firmly
-placenta begins to separate from uterine wall
what happens during the fourth stage of labor
-physiological adaptation to blood loss
-initiation of uterine involution
norma HR in newborn
120-160 bpm
fetal monitoring marker of fetal distress
consistent decelerations after contractions
2 types of fetal monitors
where is each one placed
external: maternal abdomen
internal: infant head
4 types of fetal HR changes
accelerations
early decelerations
variable decelerations
late decelerations
which type of fetal heart rate change is a normal response to fetal movement and is reassuring
accelerations
benign fetal HR change that mirrors images of contractions and indicates fetal head compression
early decelerations
-rapid FHR drop w. a return to baseline w. variable shape that indicates cord compression
variable decelerations
t/f: variable decelerations can be benign if mild or mod
t!
worrisome if severe
which fetal HR change is always worrisome
late decelerations
describe late FHR decelerations
drop at the end of the contraction
what do late FHR decelerations indicate
uteroplacental insufficiency