Question

Cardiac output increases from 30% to 50% by the 32nd week of pregnancy. What is the rationale for this change?

Answer 1

Correct Answers:

To provide adequate perfusion of the placenta

Rationale :

🔴 During pregnancy, cardiac output increases significantly (by 30% to 50%), especially by the second to third trimester, to meet the increased circulatory demands of the developing fetus and maternal body.

🔴 The primary reason for this increase is to ensure sufficient blood flow to the placenta, which is the lifeline for nutrient and oxygen exchange between mother and fetus.

🔴 Increased cardiac output also supports expanded maternal blood volume, uterine blood flow, and mammary gland perfusion in preparation for lactation.

🔴 This physiologic adaptation is essential for fetal growth and development, as well as maintaining maternal homeostasis throughout pregnancy.

🔴 While waste elimination and hydration are important, placental perfusion is the central driving factor for the rise in cardiac output.

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Answer 2

Correct Answers:

mercury, which could harm the developing fetus if eaten in large amounts

Rationale :

🟡 Swordfish, tilefish, shark, and king mackerel are known to contain high levels of methylmercury, a neurotoxic substance that can cross the placenta and harm fetal brain and nervous system development.

🟡 Pregnant individuals are advised to avoid high-mercury fish and instead choose low-mercury alternatives like salmon, tilapia, and sardines, which are safer and still rich in omega-3 fatty acids beneficial for fetal growth.

🟡 Mercury exposure in utero is associated with cognitive deficits, motor delays, and language development issues in infants.

🟡 The FDA and EPA recommend consuming 2–3 servings of low-mercury fish per week during pregnancy while strictly avoiding high-mercury varieties.

🟡 This precaution is essential for protecting fetal neurological development without sacrificing the benefits of fish intake.

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Answer 3

Correct Answers:

Cigarette smoking

Rationale :

🟣 Cigarette smoking is a well-established modifiable risk factor for osteoporosis, as it interferes with calcium absorption, reduces estrogen levels, and impairs osteoblast function, all of which contribute to decreased bone density.

🟣 Smokers have an increased risk of fractures, slower bone healing, and accelerated bone loss, especially postmenopausally.

🟣 Smoking cessation is strongly encouraged to preserve bone mass and reduce osteoporosis-related complications.

🟣 In contrast, obesity may offer slight bone protection due to increased mechanical load, and African-American race is typically associated with higher bone density.

🟣 Low-protein intake can contribute to poor bone health but is less directly linked than smoking.

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Answer 4

Correct Answers:

Primipara

Rationale :

🟢 A primipara is a woman who has completed one pregnancy in which the fetus (or fetuses) reached viability, typically defined as 20 weeks of gestation or more, regardless of whether the infant was born alive or stillborn.

🟢 This term refers specifically to birth experience, not just pregnancy, and distinguishes women based on parity (number of pregnancies carried to viability).

🟢 Nulligravida refers to a woman who has never been pregnant.

🟢 Primigravida refers to a woman who is pregnant for the first time, not necessarily to viability yet.

🟢 Multipara indicates a woman who has completed two or more pregnancies to the stage of viability.

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Answer 5

Correct Answers:

Constructing a family pedigree of three or more generations
Assessing the responses of family members to a genetic disorder
Offering parents information about genetics

Rationale :

✅ Constructing a family pedigree of three or more generations

🧬 Nurses trained in genetics often assist in collecting detailed family histories, including medical conditions, genetic patterns, and inheritance trends.

🧬 A three-generation pedigree helps identify potential hereditary risks and is a foundational tool in genetic counseling and risk assessment.

🧬 It includes data on birth defects, chronic diseases, miscarriages, and consanguinity, and is essential in planning screening or referrals to specialists.

✅ Assessing the responses of family members to a genetic disorder

💬 Nurses play a vital role in assessing psychosocial, emotional, and cultural reactions of clients and families dealing with genetic diagnoses.

💬 They support families coping with grief, uncertainty, decision-making, and stigma related to genetic conditions.

💬 This includes assessing adjustment, comprehension, coping mechanisms, and readiness to receive information or make healthcare choices.

✅ Offering parents information about genetics

📘 A key role of nurses in genetics is to provide accurate, understandable information about genetic inheritance, testing options, and possible outcomes.

📘 They help parents make informed decisions by explaining concepts like dominant/recessive inheritance, carrier status, and screening limitations.

📘 Nurses also provide resources, support, and referrals to genetic counselors or specialists as needed.

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Answer 6

Correct Answers:

Operculum

Rationale :

🔵 The operculum is the mucous plug that forms in the endocervical canal during pregnancy, acting as a protective barrier to prevent the ascent of bacteria and pathogens into the uterus.

🔵 It is composed of thick cervical mucus and remains in place until labor begins, when it may be expelled as part of the "bloody show."

🔵 The operculum helps maintain sterility of the uterine environment, protecting the fetus throughout gestation.

🔵 It is not associated with bleeding unless accompanied by cervical changes close to term.

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Answer 7

Correct Answers:

Pelvic rock exercises

Rationale :

🟢 Pelvic rock exercises are specifically designed to relieve backaches during pregnancy by strengthening abdominal and pelvic muscles, improving posture, and reducing strain on the lower back.

🟢 These exercises help align the spine and pelvis, promote flexibility, and are safe for women in the second trimester.

🟢 Mild-to-moderate back pain is a common discomfort during pregnancy due to postural changes, hormonal ligament relaxation, and uterine growth.

🟢 Unlike bed rest, which can lead to stiffness, gentle activity like pelvic rocking promotes circulation and musculoskeletal support.

🟢 Kegel exercises target pelvic floor strength, not back pain, and mattress changes are not first-line interventions.

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Answer 8

Correct Answers:

Breast cancer
Deep vein thrombosis (DVT)
Myocardial infarction

Rationale :

✅ Breast cancer

🧬 Pharmacogenomics plays a significant role in targeted therapy for breast cancer, particularly in clients with HER2-positive tumors or BRCA1/BRCA2 mutations.

🧬 Drugs like trastuzumab (Herceptin) are prescribed based on HER2 gene overexpression, while PARP inhibitors are used in those with BRCA mutations.

🧬 Testing helps determine which drugs will be most effective or pose the least risk, improving outcomes and minimizing adverse effects.

✅ Deep vein thrombosis (DVT)

🧪 Certain genetic variants, such as Factor V Leiden or prothrombin gene mutations, increase a person’s risk for DVT.

🧪 Pharmacogenomic testing can also identify variations in the CYP2C9 and VKORC1 genes, which affect how a client metabolizes warfarin—a commonly used anticoagulant.

🧪 This information allows for individualized warfarin dosing to reduce bleeding risks or therapeutic failure.

✅ Myocardial infarction

❤️ Genetic variants can influence how individuals respond to antiplatelet drugs such as clopidogrel (Plavix).

❤️ Clients with CYP2C19 gene mutations may have reduced ability to activate clopidogrel, decreasing its effectiveness and increasing the risk of a second MI or stroke.

❤️ Pharmacogenomic testing helps select the right antiplatelet agent or adjust dosing for better protection against cardiovascular events.

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Answer 9

Correct Answers:

Down syndrome

Rationale :

🟣 The quadruple marker screen (quad screen) is a maternal blood test performed between 15 and 20 weeks of gestation to assess the risk of certain fetal chromosomal and neural tube defects.

🟣 It measures four biomarkers:

1. Alpha-fetoprotein (AFP)

2. Human chorionic gonadotropin (hCG)

3. Estriol (uE3)

4. Inhibin A

🟣 Abnormal levels of these markers can suggest an increased risk for Down syndrome (Trisomy 21)—typically indicated by low AFP and estriol, and high hCG and inhibin A.

🟣 The test also screens for Trisomy 18 (Edwards syndrome) and neural tube defects like anencephaly, but Down syndrome is the primary chromosomal condition identified.

🟣 It is a screening test, not diagnostic, and abnormal results are followed up with ultrasound and possibly amniocentesis.

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Answer 10

Correct Answers:

Higher-than-normal levels of hCG may indicate an ectopic pregnancy or Down syndrome.

Rationale :

🟣 Human chorionic gonadotropin (hCG) is produced by the placental trophoblast cells shortly after implantation and is the basis of most pregnancy tests.

🟣 Elevated hCG levels (for gestational age) can be associated with Down syndrome (Trisomy 21) and also with molar pregnancy or multiple gestations.

🟣 However, abnormally rising or high levels may also occur in ectopic pregnancies, though often the pattern is irregular or slower than expected.

🟣 Normal hCG levels rise rapidly in early pregnancy (doubling approximately every 48–72 hours), peak around 8–11 weeks, and then decline and level off for the remainder of the pregnancy.

🟣 Very low or slowly rising hCG levels may suggest a nonviable or failing pregnancy, not necessarily postdate gestation.

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QLexNursing

1 :
Cardiac output increases from 30% to 50% by the 32nd week of pregnancy. What is the rationale for this change?

2 :
A nurse strongly encourages a pregnant client to avoid eating swordfish and tilefish because these fish contain which component?

3 :
Which risk factor would the nurse recognize as being frequently associated with osteoporosis?

4 :
What is the correct term for a woman who has completed one pregnancy with a fetus (or fetuses) reaching the stage of fetal viability?

5 :
Which activities are included in the role of a nurse practicing in the field of genetics? (Select all that apply.)

6 :
What is the correct term used to describe the mucous plug that forms in the endocervical canal?

7 :
A pregnant woman at 18 weeks of gestation calls the clinic to report that she has been experiencing occasional backaches of mild-to-moderate intensity. Which intervention should the nurse recommend?

8 :
One of the most promising clinical applications of the Human Genome Project has been pharmacogenomic testing (the use of genetic information to guide a client's drug therapy). Which conditions are potential candidates for pharmacogenomic application? (Select all that apply.)

9 :
Which condition is likely to be identified by the quadruple marker screen?

10 :
hCG is an important biochemical marker for pregnancy and therefore the basis for many tests. Which statement regarding hCG is true?

QLexNursing

1 : Cardiac output increases from 30% to 50% by the 32nd week of pregnancy. What is the rationale for this change?

2 : A nurse strongly encourages a pregnant client to avoid eating swordfish and tilefish because these fish contain which component?

3 : Which risk factor would the nurse recognize as being frequently associated with osteoporosis?

4 : What is the correct term for a woman who has completed one pregnancy with a fetus (or fetuses) reaching the stage of fetal viability?

5 : Which activities are included in the role of a nurse practicing in the field of genetics? (Select all that apply.)

6 : What is the correct term used to describe the mucous plug that forms in the endocervical canal?

7 : A pregnant woman at 18 weeks of gestation calls the clinic to report that she has been experiencing occasional backaches of mild-to-moderate intensity. Which intervention should the nurse recommend?

8 : One of the most promising clinical applications of the Human Genome Project has been pharmacogenomic testing (the use of genetic information to guide a client's drug therapy). Which conditions are potential candidates for pharmacogenomic application? (Select all that apply.)

9 : Which condition is likely to be identified by the quadruple marker screen?

10 : hCG is an important biochemical marker for pregnancy and therefore the basis for many tests. Which statement regarding hCG is true?

1 :
Cardiac output increases from 30% to 50% by the 32nd week of pregnancy. What is the rationale for this change?

2 :
A nurse strongly encourages a pregnant client to avoid eating swordfish and tilefish because these fish contain which component?

3 :
Which risk factor would the nurse recognize as being frequently associated with osteoporosis?

4 :
What is the correct term for a woman who has completed one pregnancy with a fetus (or fetuses) reaching the stage of fetal viability?

5 :
Which activities are included in the role of a nurse practicing in the field of genetics? (Select all that apply.)

6 :
What is the correct term used to describe the mucous plug that forms in the endocervical canal?

7 :
A pregnant woman at 18 weeks of gestation calls the clinic to report that she has been experiencing occasional backaches of mild-to-moderate intensity. Which intervention should the nurse recommend?

8 :
One of the most promising clinical applications of the Human Genome Project has been pharmacogenomic testing (the use of genetic information to guide a client's drug therapy). Which conditions are potential candidates for pharmacogenomic application? (Select all that apply.)

9 :
Which condition is likely to be identified by the quadruple marker screen?

10 :
hCG is an important biochemical marker for pregnancy and therefore the basis for many tests. Which statement regarding hCG is true?