Maternity Part 2 Flashcards
excessive or pernicious vomiting during pregnancy leading to dehydration and starvation
hyperemesis gravidarum
what would you give through an IV for a pt with hyperemesis gravidarum
LR bc has electrolytes
what is a possible etiology of hyperemesis gravidarum
possible bc of increase level of HcG, thyroid dysfunction, disruption of GI motility, increase estrogen level
S/Sx of hyperemesis gravidarum
N & V , intractable
Tx for hyperemesis gravidarum
hydration (3000mL within 24 hours
Rx (Zofran, phenegran)
nutritional supplements (ensure)
monitor for keytones
cervix is unable to support the increasing weight of the pregnancy, results in painless dilation of cervical os without labor or contractions, associated with repeated 2nd trimester abortion )16-28 weeks)
incompetent cervix
predisposing factors for incompetent cervix
prior traumatic delivery, Hx of D&C, conization, cauterization, mother of pregnant women who took DES, anomaly of uterus or cervix
Dx of incompetent cervix
Hx, examination (vag exam), U/S
Tx for incompetent cervix
cerclage or purse string suture, inserted in cervix to prevent preterm cervical dilation and pregnancy loss, tightened and secured anteriorly
spontaneous ROM prior to onset of labor
premature rupture of membranes
*gestational age doesn’t matter
spontaneous ROM: latent period
time from ROM to onset of labor (usually within 24 hours)
spontaneous ROM: interval period
time from ROM to birth
Etiology of PROM
unknown, contributing factors: infection, Esp. UTI, polyhydramnious, trauma, mult gestation
what maternal risks can happen because of PROM
INFECTION
chorioamnionitis: inflammation of membranes
endometritis: postpartum infection of endometrial lining
what neonatal risks can happen because of PROM
RDS, sepsis
Management of PROM
Abx, bedrest, CBC, fetal monitoring, Temp Q4 hours, daily WBC, corticosteroids and amniocentesis prn, L/S ratio to check lung maturity
occurrence of regular uterine contractions at less than 10 minute intervals after 20 weeks but prior to 37 completed weeks gestation, it is the greatest single problem in OB
premature labor
what Rx can you give to stop labot
Tocolytics
what do you need to do to identify those pts at risk for premature labor
gather Hx, cervical length and funneling, ffn (fetal bibronectin), Sx of preterm labor
funneling
greater than 50% funneling before 25 weeks has a 80% risk of preterm delivery
extracellular matrix protein of fetal membranes binds placenta and membranes to decidua, found before 20 weeks and after 34 weeks
fetal fibronectin
if there is fetal fibronectin present between 20 and 34 weeks this is what
abnormal = risk for premature labor
preterm labor Sx
abd tightness, menstrual cramping, back discomfort (comes and goes), pelvic pressure, intestinal cramping
what can the pt do to decrease the risk for preterm labor
regular PN care, refrain from sexual intercourse, empty bladder Q2 hours, curtail work activities, allow for rest, left lateral position, maintain adequate nutrition and hydration
what are the contraindications of suppressing labor
confirmed fetal death, fetal distress, gestational age less than 20 weeks
Ritodrine
1st and only Rx approved, works on beta receptors in smooth muscle
risks: pulmonary edema
assess: BP, HR, RR, I&O, lung sounds
contraindications: concurrent Tx with glucocorticosteriods
Supress labor
cervix less 4 cm dilated, gestation less 37 weeks, viable infant, documentation of contractions, membranes intact, no medical or obstricial disorders
Terbutaline
B-adrenergic, relaxes smooth muscle, SQ or inhalation, Terbutanline pump
SE: tacycardia
Magnesium sulfate
CNS suppressant, secondary action-relaxes smooth muscle, monitor reflexes and BP
antidote for Magnesium sulfate
calcium gluconate
Nifedipine
Procardia, decrease smooth muscle contraction, SE increase HR, flushing, HA, decrease BP
Progesterone
relaxes uterine contratility
Bethamethasone
Celestone, accelerates fetal lung maturation (helps with surfactant), contraindicated with Ritodrine
developed from single fertilized ovum that divides, identical twins
monozygotic
the # of amnions and chorions depends on what
the timing of division after fertilization, the earlier the splitting the more independent the twins will develop
2 separate ova fertilized by 2 seperate sperm, fraternal twins (not identical)
Dizygotic
(2 placentas, 2 chorions, 2 amnions, born singly
How do you Dx multifetal gestation
U/S see 2 gestational savs, have severe N & V due to increase HCG
Maternal complications with multifetal gestation
PROM, pre eclampsia, preterm labor, prolapsed cord, post partum hemorrhage (overdestended uterus), high risk UTI
Fetal complications with multifetal gestation
IUGR, fetal anomalies, premature, cerebral palsey, TTTS
twin to twin transfusion syndrome (TTTS)
single plaental, one baby sucks up all nutirents and other gets leftovers, abnormal blood vessels in placenta
donor twin
small twin
recipient twin
larter twin
what would be dont for Tx of TTTS babies
seperate circulation, selective cord coagulation (stop BF to one baby, results in death of twin)
create a hole between babies sacs, evens out fluid
found in TTTS babies
septoplasty
what is the goal with multifetal gestations
keep pregnancyuntil 38 weeks for twins, 35 for triplets
what influences the delivery decision
position and presentation
what are the 4 factors of labor
passage, passenger, powers, psyche
false pelvis
above pelvic brim, supports weight of uterus
true pelvis
below pelvic brim
normal female pelvis, inlet is rounded, favorable for delivery, usually OA
gynocoid pelvis
normal male pelvis, inlet is heart shaped, prominent ischial spines, arrest of labor is frequent
android pelvis
ape like pelvis, inlet is oval, facorable influence on labor
anthropoid pelvis
flat pelvis, transverse oval inlet, if passes through inlet delivery is rapid
platypelloid pelvis
accomodation, overlapping of cranial bones under pressure of the powers of labor
passenger
swelling of soft tissues of scalp
caput
what is the suture on the back of the head, seperating the parietal and occipital bones
lambdodial suture
what is the suture on the front of the head seperating the frontal and parietal
coronal sutures
what is the suture that seperates the right and left parietal bones
sagital suture
the anterior fontenelle is AKA
Bregma
what is the fontenlle on the lateral side of the face in the cheek area
sphenoid fontenelle
the frontal bones are also known as
sinciput
mentum
fetal chin
sinciput
fetal brow
bregma
anterior fontenelle
vertex
area between anterior and posterior fontenelles
occiput
area beneath posterior fontenelle
relationship of the fetal spine to the maternal spine
Lie
*longitudinal/vertical
horizontal/transverse
relationship of fetal parts to one another, 4 types
attitude
what are the 4 types of attitudes
vertix; head flexed
military: partialy flexed
brow: partly extended
face: well extended, largest diameter of head to come through)
which fetal body part enters the pelvis first or lying over inlet, 4 types
presentation
what are the 4 presentation types
cephalic: fetal head 1st
breech: fetal butt, knees, feet first
shoulder: transverse line
compound: more than one presenting part
fetal hips and knees are flexed, thighs on abdomen, butt and feet present
complete breech
fetal hips flexed, knees extended, butt present
frank
“frank-feet-face”
fetal hips and legs extended, feet present, may be single or double footling
footling
fetal body part present in or on cervical os
presenting part
when largest diameter of present part reaches or passes through pelvic inlet
engagement
relative position of fetal presenting part above or below an imaginary line drawn between the maternal ischial spines
station
relationship of an orbitrarily choosen fetal reference point on presenting fetal part to its location front, back or side of maternal pelvis
position
forces of labor
powers
primary powers
uterine muscle contractions
secondary powers
use of abdominal muscles, “pushing”
what is the increment in a uterine contraction
building up (longest phase)
what is the peak of the uterine contraction
acme
what is the letting up phase in a uterine contraction
decrement
pressure in uterus between contractions
resting tone
period of time from start of one to start of another contraction (ex. 2-3 minutes)
frequency