Nokea
Which physical characteristics decrease as the fetus nears term? (Select all that apply.)
- A. Vernix caseosa
- B. Lanugo
- C. Port wine stain
- D. Brown fat
Correct Answer: A
Rationale: Vernix caseosa is a protective, waxy substance on the fetus' skin that decreases as the fetus nears term due to absorption into the skin. Lanugo, fine hair that covers the fetus, persists until birth. Port wine stain, a birthmark, and brown fat, a specialized fat for newborns' warmth, do not decrease as the fetus nears term.
You may also like to solve these questions
With regard to prenatal genetic testing, nurses should be aware that:
- A. Maternal serum screening can determine whether a pregnant woman is at risk of carrying a fetus with Down syndrome.
- B. Carrier screening tests look for gene mutations of people already showing symptoms of a disease.
- C. Predisposition testing predicts with near certainty that symptoms will appear.
- D. Presymptomatic testing is used to predict the likelihood of breast cancer.
Correct Answer: A
Rationale: Maternal serum screening identifies the risk for the neural tube defect and the specific chromosome abnormality involved in Down syndrome.
What routine lab tests should a pregnant person have in the first trimester? Select all that apply.
- A. complete blood count (CBC)
- B. blood type and Rh factor
- C. urinalysis
- D. thyroid function tests
Correct Answer: D
Rationale: The correct answer is D: thyroid function tests. During pregnancy, thyroid function is crucial for the health of the mother and baby. Thyroid disorders can lead to complications. Testing thyroid function in the first trimester helps detect any abnormalities early.
A, B, and C are commonly performed tests in pregnancy, but they are not specific to the first trimester. A CBC helps assess overall health, blood type and Rh factor are important for identifying potential blood type incompatibilities, and urinalysis can indicate urinary tract infections or other issues. However, these tests are not unique to the first trimester and are typically done throughout pregnancy.
In presenting to obstetric nurses interested in genetics, the genetic nurse identifies the primary risk(s) associated with genetic testing as:
- A. Anxiety and altered family relationships.
- B. Denial of insurance benefits.
- C. High false-positive results associated with genetic testing.
- D. Ethnic and socioeconomic disparity associated with genetic testing.
Correct Answer: B
Rationale: Some types of genetic testing are expensive and are not covered by insurance benefits.
The upper uterus is the best place for the fertilized ovum to implant due to which anatomical adaptation?
- A. Maternal blood flow is lower.
- B. Placenta attaches most firmly.
- C. Uterine endometrium is softer.
- D. Developing baby is best nourishe
Correct Answer: D
Rationale: The correct answer is D because the upper uterus provides the developing baby with the best nourishment due to increased blood flow and nutrient supply. This area allows for optimal growth and development of the fetus. Maternal blood flow is higher in the upper uterus, not lower (A). While the placenta attaches firmly in the upper uterus, it is not the main reason for the implantation site (B). The uterine endometrium is softer in the lower uterus, not the upper, making choice C incorrect. In summary, the upper uterus is ideal for implantation due to increased nourishment for the developing baby, making choice D the correct answer.
What karyotype would the nurse anticipate for a patient with Klinefelter’s syndrome?
- A. XO
- B. XXY
- C. XYY
- D. XXX
Correct Answer: B
Rationale: The correct answer is B: XXY. In Klinefelter's syndrome, individuals have an extra X chromosome, resulting in a karyotype of 47,XXY. This leads to physical and cognitive characteristics associated with the syndrome. Choice A (XO) represents Turner syndrome, which involves a missing X chromosome. Choices C (XYY) and D (XXX) are not associated with Klinefelter's syndrome as they involve extra Y and X chromosomes respectively, leading to different syndromes altogether.