Pregnancy III Flashcards
What is the purpose of antepartum fetal assessment?
Identifies individuals at risk for abnormality. First screening, then diagnostic testing if indicated.
What are false positives and false negatives in screening?
Incorrectly identifying individuals as at risk or not at risk
What is the difference between screening and diagnostic testing?
Screening identifies risk while diagnostic testing gives a precise diagnosis. Screening is done first before diagnostic testing.
What is chorionic villus sampling used for?
Precise test for a given condition, it is a diagnostic test
involves taking a small sample of tissue from the placenta
What is amniocentesis used for?
Diagnostic testing during pregnancy
What is the purpose of screenings?
To look for abnormalities
What are some examples of abnormalities that screenings can detect?
Trisomy 21
What is the recommended course of action if someone comes back with a positive result from a screening?
Encouraged to do diagnostic testing, which is much more accurate
What is the main difference between screenings and diagnostic testing?
Screening is done by everyone, diagnostic testing is not
What can ultrasound obtain real-time images of?
Maternal structures, placenta, amniotic fluid, and fetus
What are the two types of ultrasound for examining the structures like the heart?
Transabdominal and transvaginal
When is transvaginal ultrasound usually used?
At 8-10 weeks of gestation and is used to confirm pregnancy (bc its harder to get it from the abdomen).
Which trimester is the 1st trimester ultrasound performed in?
First trimester
Which trimester is the 2nd trimester ultrasound performed in?
Second trimester
What is the purpose of first trimester ultrasonography?
Confirm pregnancy, verify location, identify multiple gestations, determine gestational age, identify markers, determine locations of uterus, cervix, and placenta
At what gestational age can the embryo be seen on ultrasound at the earliest?
5-6 weeks
What does the heart rate on ultrasound indicate? At what gestational age is the fetal heart rate visible on ultrasound?
Health; 5 weeks
What is the most accurate measure of gestational age?
the first trimester ultrasound
What is used to determine gestational age and compare it with Niegels rule?
Crown to rump length which is taken at the first trimester ultrasound.
What is the purpose of second and third trimester ultrasonography?
Confirm fetal viability, evaluate fetal anatomy, determine gestational age, assess serial fetal growth, compare growth of fetuses in multifetal gestations, locate the placenta, determine fetal presentation.
What does second and third trimester ultrasonography evaluate in multifetal gestations?
Compare growth of fetuses
What is the procedure for second and third trimester ultrasonography?
Transabdominal
What are some things that are examined during second and third trimester ultrasonography?
Umbilical cord, blood flow, amniotic fluid volume, position of the placenta
Which mothers may require further ultrasounds?
High risk mothers
What does chorionic villus sampling (CVS) test for?
Genetic abnormalities and chromosomal abnormalities.
What can amniocentesis identify?
Fetal abnormalities, fetal lung maturity status, infection
Chromosomal genetic or metabolic abnormalities
What may occur as a result of amniocentesis or cvs?
AF leaking and spotting
uterus cramping and discomfort (24 -48 hourds)
How is fetal well-being assessed?
Through methods like fetal movement counting, FHR, contraction stress test, and nonstress test
What is done if there are not enough accelerations in an nonstress test (NST), then fetal stimulation may be required?
vibroacoustic stimulation can be done before than however eating and drinking may be done in order to elecite 2 accerlerations in 40 minutes
What is a non-reactive NST?
goal is 2 accelerations in 40 minutes
but these are non invasive was to get to the goal
When can NSTs be started?
As early as 32 weeks
What is the Contraction Stress Test (CST)?
A test to see if the baby is well enough to handle normal labor; this occurs closer to term
What releases oxytocin? and how is this done for a CST?
Labor, breastfeeding, and sex. nipple stimulation and possibly IV oxytocin
How is the CST performed?
Through nipple stimulation or IV oxytocin
When is the CST typically done?
Only if we are concerned about the baby and closer to term
When is the CST contraindicated?
History of preterm labor, pregnancies that cannot be delivered vaginally
What does BPP tell us?
if baby is well oxygenated or not
What is a good BPP score?
8-10. –indicates good fetal oxygenation
What are the componets of the biophysical profile?
NST,fetal breathing, fetal movement, tone, and amniotic fluid (rate 0 = no and 2 = yes)
What does a BPP score of 6 mean?
Something is going on
What should be done if BPP score is 6?
Retest within 24 hours if amniotic fluid volume is appropriate if it is not good, consider delivery.
What BPP score indicates the need for delivery? what are some things you would need to prepare for?
0-4. associated with need to deliver… could be a still birth -prepare for rescue interventions
How does early loss of pregnancy affect mothers?
Feel alone and isolated because not a lot of people may know that they are pregnant.
What can be helpful for mothers experiencing perinatal loss?
validate feelings, encouraging them to name the baby, respect their wishes
What is the significance of the Cuddle Cot?
The Cuddle Cot provides families with more time to spend with their baby.
What are the therapeutic management options for hyperemesis gravidarum?
Diphenhydramine, Histamine-receptor antagonists (pepcid/zantac), Gastric acid inhibitors (nexium/prilosec), Metoclopramide (reglan), Pyridoxine/doxylamine
What is Hyperemesis Gravidarum?
Severe pregnancy-related nausea and vomiting
How long does Hyperemesis Gravidarum typically last?
Throughout the entire pregnancy
What are the common symptoms of Hyperemesis Gravidarum?
Dehydration and electrolyte imbalances
What is the cause of Hyperemesis Gravidarum?
Unknown, but thought to be related to pregnancy hormones
How is Hyperemesis Gravidarum diagnosed?
By ruling out other causes of severe nausea and vomiting
When might a pregnant woman with Hyperemesis Gravidarum be hospitalized?
If they are severely ill and require IV fluids and TPN
What medication is typically avoided during the first trimester in Hyperemesis Gravidarum?
Zofran, it can cause cleft palate and heart defects.
What should be monitored in Hyperemesis Gravidarum?
Intake and output
What conditions must exist for Rh incompatibility?
Mother is Rh-negative, and fetus is Rh-positive.
What are the potential negative effects of Rh incompatibility?
Negatively affects future pregnancies if not treated.
What is the treatment for Rh incompatibility?
Rhogam
At what time during pregnancy is Rhogam typically administered?
28 weeks and 72 after birth if mom neg and baby pos
What can happen if there is Rh factor incompatibility between the mother and the baby?
Birth defects or abortion
What is hypovolemia?
Decreased blood volume
How does hypovolemia affect the mother?
Can lead to decreased blood flow and oxygen delivery to organs
What does a complete abortion mean?
Abortion does everything and there is no retained tissue.
What does an incomplete abortion mean?
Something was left behind and a D&C may be needed.
What does a missed abortion mean?
Retains all the tissue and requires a D&C.
What does recurrent abortion mean?
Three or more occurrences of abortion, not necessarily successive.
What is the most important lab for abortion conditions?
CBC and H&H, but CBC is the most important; and misoprostol
How is an abortion (miscarriage) defined in terms of gestational age?
Less than 20 weeks
What is cerclage?
Procedure to stitch the cervix closed
When is cerclage recommended?
For women at risk of premature birth
How is cerclage performed?
Using stitches to secure the cervix or with the use of a band.
Is a cerclage considered a high risk pregnancy?
Yes
What is an ectopic pregnancy?
Implantation of a fertilized ovum outside of uterine cavity
Where do 97% of ectopic pregnancies occur?
Fallopian tube
What are the consequences of a ruptured ectopic pregnancy?
Severe pain, internal bleeding, and significant cause of maternal death
How is ectopic pregnancy diagnosed?
Ultrasound
What are the treatment options for ectopic pregnancy?
Methotrexate (is a cancer drug that can help inhibit cell replication and only is used if this is caught early enough (8 -10 weeks) (90% success rate)), salpingectomy
What should be done if an ectopic pregnancy ruptures?
Prevent hypovolemic shock
What is gestational trophoblastic disease?
like a bunch of bubbles or cysts
- Hydatidiform mole trophoblasts develop abnormally
- Characterized by proliferation and edema of the chorionic villi
What is the difference between complete and partial hydatidiform mole?
Complete: no fetal tissue, Partial: fetal tissue present
What are the treatment options for hydatidiform mole?
D&C, oxytocin
What is the biggest complication of a hydatidiform mole?
Bleeding leading to hypovolemia
What should moms avoid after a hydatidiform mole so that we can monitor for carcinoma?
Pregnancy for 6-12 months minimum
What can extremely high HcG levels indicate?
Presence of hydatidiform mole trophoblasts
What should be watched for in hydatidiform moles?
Malignant changes or cancer
What is placenta previa?
Implantation of the placenta in the lower uterus
What is the difference between placenta previa and low lying placenta?
Placenta previa involves implantation of the placenta in the lower uterus, while low lying placenta refers to a placenta that is near the cervix but not covering it. placenta previa is completely covering the cervix.
What is a common symptom of placenta previa?
Pain LESS bright red bleeding