OB Exam 1 Flashcards
What shape is the uterus? How would you describe the muscle?
pear like
hollow, smooth muscle with rythmic contractions
What is the difference between the myometrium and the endometrium?
myo= muscle
endometrium= effects hormones
How can your pt know she is ovulating?
thick, sticky, egg white like discharge “Spinnbarket”, decrease in BBT (basal body temperature) and then spikes up half a degree, positive for LH
What hormone decreases to trigger her period?
Progesterone
What is the area most likely to be damaged during childbirth?
perineum
1st degree perineal tear
1st= superficial, goes thru the skin
2nd degree perineal tear
2nd= skin and muscle
3rd degree perineal tear
3rd= all the way into the anal sphincter
4th degree perineal tear
4th= all the way to the rectal wall
A mom at 6 weeks of pregnancy asks why she has to urinate so often, what do you say?
your bladder is right behind the uterus, so the uterus is pressing on your bladder all the time
What is the primary mechisms to stop hemorrhage from the uterine arteries after childbirth (postpartum hemorrhage)?
contraction of the uterine smooth muscle that compresses the arteries (d/t oxytocin)
What is counted as the first day of the menstrual cycle?
1st day of last menstrual period
How long after intercourse could a woman get pregnant?
however long the sperm lives, it be 3-6 days
wrap it before you tap it bc the spermies linger
How long after ovulation could a woman get pregnant?
24 hours, egg is only viable for that long and then it decomposes
How does fertilization happen?
ovum +sperm, chromosomes combine
fertilization occurs in outer 1/3 of tube, forming zygote
zygote travels the length of the tube to the uterus in 3-4 days, cleavage
16 cell** morula** “solid ball of cells” gives rise to blastocyst with a hollow cavity
What 2 structures is the blastocyst made up of?
embryoblast- becomes embryo
trophoblast- becomes placenta
On average, how long does implantation take after fertilization?
6-10 days
What surrounds vessels in the umbillical cord?
whartons jelly
fetal circulation to get oxygenated blood from mom to baby
oxygenated blood from placenta enters
umbillical vein
bypasses liver
ductus venosus (a shunt)
inferior vena cava
right atrium
foramen ovale
left atrium
left ventricle
aorta
out to the body
fetal circulation for deoxygenated blood
blood returning from body
right atrium
right ventricle
ductus arteriosus
aorta (bypassing lungs)
placenta through the umbillical arteries
do arteries carry blood to or away from the baby?
arteries= AWAY
veins= to
What do I mean when I say that the arterous venous is a shunt?
allows blood to bypass the liver and lungs bc the liver isnt neccesary yet and the lungs dont work until born
what is vernix cassiosa? what is languo?
cheesy like white substance covering the baby, teeny fine hairs
What reproductive system physiological changes happen to mom during pregancy?
uterine wall thinkens (early pregnancy) and then thins (late pregnancy)
aerolas darken and breasts increase in size (to support lactation)
uterize size changes from 50-1000g
What are the cardiac phsyiological changes of mom during pregnancy?
CO increases
Blood volume increases to meet the greater metabolic needs
HR increases during pregnancy (w5) and peaks at w32
Heart muscles enlargen 10%
What is a common complaint of pregnant woman in regards to blood flow? How do you alleviate the discomfort?
legs cramps, calcium
hypocalcemia causes leg cramps during pregnancy
What mineral is common for pregnant women to lack? Why does it happen?
Iron, mom is producing extra blood volume but they are not taking in enough iron. they are not going to have enough blood cells
Clotting is common in pregnant women. Why?
there is an increase in clotting factors, especially post partum. encourage ambulation!!
Physiological changes GI for pregnant women
Heartburn (progesterone relaxes the esophageal sphincter so all the stomach acid creeps back up)
N/V
Constipation
Physiological changes Renal in pregnant women
filtration increases
urine production remains the same but frequency is common d/t pressure
Skin changes in pregnant moms
chloasma: increased facial pigmentation
linea nigra: dark line of pigmentation from umbillicus to pubic area
striae gravidarum: stretch marks
Musculoskeletal changes in pregnancy
healthy weight increase 25-30 lbs
pelvic joint relaxes and tilts forward (lordosis)
gait change d/t relaxin relaxing pelvic joints
encourage light excercise during pregnancy
Common pregnancy discomforts include..?
N/V and Heartburn
Backache and round ligament pain
Frequency
Varicosities and leg cramps
Constipation and hemorrhoids
How would you educate your patient who was experiencing 1st trimester N/V and heartburn?
eat small frequent meals and try to keep something on your stomach, eat ginger root, preggy pops like sour candies
avoid spicy foods, stay sitting up for at least 30 minutes after eating
NO zofran or phenergan for pregnancy
What are some patient education points for backache and round ligament pain during pregnancy?
backache: swimming, stretching excercises, yoga, gentle excercises
round ligament pain: pregnancy support belts (supports the belly and takes pressure off)
Patient education for urinary frequency in pregnancy?
not much you can do here, try to avoid sweet tea, coffee (drinks that are diuretics) but drink enough water to stay hydrated
What are some danger signs during pregnancy?
Facial edema, blurred vision, floaters, edema in hands, HEADACHES, epigastric pain (s/s of HTN condition and preecalmpsia)
1^ burning during urination
hyperemesis gravidarum
2^ Diarrhea/ fever/ chills
Abdominal cramping or pain/ vaginal bleeding/ gush of fluid from vagina
fetal activity changes
hyper/hypoglycemia
1^ UTI can send you into preterm labor
2^ bacterial and viral infections can cause long term defects of the fetus
Can insulin cross the placental barrier?
NO!
babies have to make their own insulin, so even if we get moms blood sugar down, baby’s pancreas is still trying to get the high glucose level managed with its own insulin
moms blood sugar is babies blood sugar
moms insulin is not babies insulin
The fundus is 8 cm above the umbillicus, how far along is mom?
28 weeks
Pregnant mom is 24 weeks pregnant, but her fundus is only at the height of the umbillicus. What should the nurse do?
Investigate, contact the provider. Baby is not progressing as expected
What is colostrum?
1st little bit of breast milk, thick and yellow in consistency, full of antibodies, antibacterials. secreted around 16 weeks
What does it mean when a baby is in the occipus anterior position on an ultrasound? Occipus posterior?
occipus anterior: baby is looking at moms back, good for birthing
occipus posterior: baby is looking at moms front and back of babies head is gliding down moms spine as it comes out, painful and slower birth
if the baby is OP, have mom give birth on her hands and knees
What are some foods high in folic acid?
spinach, cereals, seeds, nuts, artichokes, liver
sslanc
What are neural tube defects?
birth defects of brain, spine, and spinal cord which happens within the first month of pregnancy.
How can neural birth defects be prevented?
taking folic acid before and during pregancy
How do you obtain a chorionic villus sampling?
Take part of the chorionic villi near the placenta tissue where it implants and tests for DNA matter. Can be performed abdominally or vaginally but its more common vaginal.
because the placenta has the same genetic makeup of the baby. the placenta is the trophoblast out of the embryoblast
What is the earliest genetic testing? What does the patient need to perform it? What are the risks?
chorionic villus sampling, 10-13 weeks, a full bladder, infection and fetal tests
What is an amniocentesis? What are the risks?
invasive procedure, sample amniotic fluid. can be performed 15 weeks to birth. risks are fetal limb loss, fetal death
What is Alpha-fetoprotein (AFP)? What does a high or low result mean?
screening tool to test maternal blood (15-18 weeks)
high = neural tube / abdominal defect
low = down syndrome
Level 2 ultrasound/ targeted ultrasound is…?
complete scan of fetal anatomy (after 18 weeks)
Placenta previa is what?
placenta covers cervix
What are the 4 different types of placenta previa?
low lying (lower segment of uterus, can still pass baby)
marginal (covering half of the cervical outlet)
partial (partially covering)
complete (covers entire cervix)
What are the signs and symtpoms of placenta previa?
painless, bright red vaginal bleeding
When a woman comes in with placenta previa, the nurse can expect that the baby will be?
in a breeched, oblique, or transverse laying position
When does placenta previa typically occur?
2nd or 3rd trimester
What are some risk factors for placenta previa?
previous previa
uterine scarring
mom is >35
multifetal pregnancy
multiple gestations
smoking
smoking bc it causes vasoconstriction
With placenta previa, will the fundus be lower, higher, or at an expected height?
higher
The nurse should prepare for the patient to deliver their baby in what way when mom has placenta previa?
c-section
What should the nurse avoid doing what with any woman who is having abornmalities with a pregnancy?
stick things in the vagina
A woman comes in with placenta previa. She asks her nurse why is she bleeding with no pain. How should the nurse respond?
the placenta tears as the cervix opens
What are some nursing interventions for a placenta previa?
do not put anything in the vagina, give IV fluids, blood and bethamesasone (steroid to develop the babies lungs), encourage bed rest
A placenta previa can result in what during the 3rd timerster of pregnancy?
bleeding as the cervix begins to dilate and efface
what is a placental abruption?
placenta detaches prematurely and basically explodes
What are s/s of placental abruption? What are nursing interventions?
sudden onset of intense, localized uterine pain, pain may diffuse over the uterus, boardlike abdomen with dark red blood, hypertonicity contractions, fetal distress
boardlike d/t constant contractions d/t so much blood in the uterus
What are the nursing interventions for a placental abruption?
palpate uterus for tenderness, serial monitoring of fundal height, FHR monitoring, emotional support
What is the only management for a placental abruption?
delivery
What is the leading cause of maternal death?
abruptio placentae
What are risk factors for placental abruption?
trauma
cocaine
maternal hypertension
hx of abruption
smoking
premature rupture of membrane (water bag broke, labor has not started)
multifetal pregnancy
anything that causes vasoconstriction
What is an etopic pregnancy?
“tubal pregnancy”, fertilized ovum is outside the uterus, account for 9% of all pregnancy related maternal death
What will be shown on the transvaginal ultrasound if a woman has an ectopic pregnancy?
absolutely nothing , baby isnt in uterus, its somewhere else
A woman who potentially has an ectopic pregnancy is getting a vaginal and bimanual examination. What should the nurse do?
use caution
A women has a suspected ectopic pregnany. How should the nurse perform treatment?
RAPIDLY
What are the s/s of an ectopic pregancy?
bleeding, spotting, unilateral stabbing pain where the fallopian tube is, refered pain up the shoulder
What is the drug of choice to treat a non ruptured ectopic pregnancy?
methotrexate, its a chemo drug that inhibits cell division and embryo enlargement, dissolving the pregnancy
baby will be dead
What is the procedure to treat a nonruptured ecotopic pregancy?
salpingostomy , salvages the fallopian tube
What is the treatment of a ruptured ectopic pregnancy?
laparoscopic salpingectomy, removal of the tube after it has ruptured