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BSNC 5000 OB Final Exam Questions With Correct Answers. Describe the psychosocial adaptation to pregnancy for mother, partner, sibling(s) and other caregivers - answerMaternal/paternal adaptation: accepting the pregnancy → identifying with the mother/father role → reordering personal relati...

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  • August 16, 2024
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  • 2024/2025
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BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM



BSNC 5000 OB Final Exam Questions With
Correct Answers.

Describe the psychosocial adaptation to pregnancy for mother, partner, sibling(s) and other
caregivers - answer✔✔Maternal/paternal adaptation: accepting the pregnancy → identifying
with the mother/father role → reordering personal relationships → establishing a relationship
with the fetus → preparing for childbirth
Sibling adaptation: concerns about losing their place in the family hierarchy
Other caregivers: grandparents can act as a family historian, experienced caregivers can act as
resource persons who share knowledge, any caregivers can provide support to strengthen the
family system and widen the circle of nurturance
Describe the stages of a healthy pregnancy and normal growth and development. -
answer✔✔Ovum/pre-embryonic: conception until day 14
- Covers cellular replication, blastocyst formation, initial development of the embryonic
membranes, and establishment of the primary germ layer


Embryo: day 15 until 8 weeks after conception
- Most critical time in the development of the organ systems and the main external features.
Developing areas with rapid cell division are the most vulnerable areas to malformation caused
by environmental teratogens
Membranes, amniotic fluid, yolk sac, umbilical cord, placenta


Fetus: 9 weeks until pregnancy ends
- Refinement of structure until fetus reaches viability

Teratogens - answer✔✔Something that is going to affect the anatomical or the physiological
development of the embryo during the embryonic stage and/or the fetus during the fetal stage


It can cause the termination of the pregnancy before it even happens (depends on type of
teratogen and severity of exposure, typically occurs during early days of pregnancy)

,BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM


Examples: alcohol and tobacco products; environmental toxins, chemicals, radiation; some
prescription medications; maternal medical conditions; infections (TORCH)

Causes of developmental malformations - answer✔✔20-25%: genetic anomalies


5%: environmental factors (intrauterine infections, maternal metabolic disorders, environmental
chemicals, drugs, medications, radiation, etc.)


65-75%: multifactorial or unknown (ex. genetic + environmental)

When is exposure to teratogens most severe - answer✔✔week 5 (embryonic period, weeks 3 to
8) as this is when all organ systems are being laid down


prior to embryonic period, there are no organ systems developing yet (just cellular division), so
there are no structural defects (however exposure can prevent implantation to uterine wall)

List TORCH infections - answer✔✔Toxoplasmosis
Other symptoms such as syphilis, parvovirus, and Hep B
Rubella
Cytomegalovirus (CMV)
Herpes simplex virus (HSV)

Modes of transmission of TORCH infections - answer✔✔VERTICAL TRANSMISSION
(mother to baby in utero):


- transplacental transmission (maternal circulation --> placenta --> fetal blood supply) (all except
Hep B)


- contact with cervical or vaginal secretion during birthing process (syphilis, CMV, HSV, Hep B)


- By breastmilk in premature and IUGR infants (CMV)


- During c-section where child is exposed to blood

, BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
Toxoplasmosis - answer✔✔a parasite acquired through undercooked meat or spores from cat
litter


treatment helps prevent passage through placenta, reducing rate of infection by up to 60%


Often causes hearing loss

Syphilis - answer✔✔bacterium


can cause hydrops fetalis


if mom is not treated: still birth 25%, neonatal death 14%, congenital syphilis 41%


if syphilis during pregnancy is untreated, 70-100% of neonates born will have symptomatic
congenital syphilis (hydropic and anemia with enlarged liver and spleen), with fetal demise
occuring in 40% of these pregnancies

Parvovirus B19 - answer✔✔Virus


vertical transmission rate of 25-50%


Can cause hydrops fetalis, 13% spontaneous loss before 20 weeks gestation




transplacental transmission is approximately 30% and fetal death occurs in about 9% of those
affected

Hepatitis B - answer✔✔Virus


Too large to cross placenta, infection occurs via microtransfusion during labour, SVD or C-
section (contact with infectious secretions), 70-90% of time


Often no congenital effects on fetus... if fetus is exposed, shots are given to prevent infection

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