HESI LPN
HESI Maternal Newborn
1. Why is a client with gestational diabetes being scheduled for an amniocentesis when the fetus has an estimated weight of eight pounds (3629 grams) at 36 weeks gestation? What information is the amniocentesis seeking to obtain?
- A. Presence of a neural tube defect.
- B. Chromosomal abnormalities.
- C. Gender of the fetus.
- D. Fetal lung maturity.
Correct answer: D
Rationale: An amniocentesis in this scenario is most likely being performed to assess fetal lung maturity. This is necessary when considering early delivery due to macrosomia (large fetal size), which is a common concern in gestational diabetes. Evaluating fetal lung maturity is crucial to determine if the fetus's lungs are developed enough to support breathing independently outside the womb. The presence of a neural tube defect and chromosomal abnormalities are not typically assessed through amniocentesis in this situation, and determining the gender of the fetus is not the primary purpose of the procedure here.
2. A pregnant client mentions in her history that she changes the cat's litter box daily. Which test should the nurse anticipate the healthcare provider to prescribe?
- A. Biophysical profile
- B. Fern test
- C. Amniocentesis
- D. TORCH screening
Correct answer: D
Rationale: The correct answer is D, TORCH screening. TORCH screening is done to detect infections such as toxoplasmosis, which can be contracted from handling cat litter and is harmful during pregnancy. Biophysical profile (choice A) is a prenatal ultrasound evaluation. Fern test (choice B) is used to assess for amniotic fluid leakage. Amniocentesis (choice C) involves taking a sample of amniotic fluid to test for genetic abnormalities and certain infections, not specifically related to toxoplasmosis from cat litter.
3. Do sebaceous glands cause a developing organism to grow arms or wings, skin, or scales?
- A. True
- B. False
- C. Possibly
- D. Never
Correct answer: B
Rationale: The correct answer is B: False. Sebaceous glands are associated with the skin's oil production and have no role in the development of limbs or body coverings. Sebaceous glands primarily produce sebum, an oily substance that lubricates and waterproofs the skin and hair. Choices A, C, and D are incorrect because sebaceous glands do not influence the growth of arms, wings, skin, or scales in a developing organism.
4. Do dizygotic (DZ) twins run in families?
- A. Yes
- B. No
- C. Rarely
- D. Never
Correct answer: A
Rationale: Yes, dizygotic (DZ) twins can run in families. This is due to genetic factors that influence hyperovulation, where a woman releases multiple eggs during her menstrual cycle. This genetic predisposition can be passed down through generations, increasing the likelihood of having dizygotic twins. Choices B, C, and D are incorrect because the statement that dizygotic twins run in families is true, as supported by scientific evidence. It is important to note that while the genetic predisposition for dizygotic twins can run in families, it does not guarantee that every generation will have twins, as other factors also play a role in twin pregnancies.
5. Chromosomes contain thousands of segments called:
- A. nuclei.
- B. nodes.
- C. capillaries.
- D. genes.
Correct answer: D
Rationale: Chromosomes are structures composed of DNA and genes. Genes are the functional segments within chromosomes that encode specific traits and characteristics. The other choices ('nuclei,' 'nodes,' 'capillaries') do not accurately describe the segments found within chromosomes and are unrelated to their structure or function.
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