Nursing Elites

1. Most victims of _____ die of respiratory infections in their 20s.

• A. Tay-Sachs disease
• B. cystic fibrosis
• C. Turner syndrome
• D. Klinefelter syndrome

Correct answer: B

Rationale: Individuals with cystic fibrosis have a genetic disorder that causes mucus to be thick and sticky, leading to blockages in the lungs and digestive system. This mucus buildup makes them more susceptible to severe respiratory infections, which can ultimately result in premature death in their 20s. Tay-Sachs disease (Choice A) is a genetic disorder that affects the nervous system, not typically causing respiratory infections. Turner syndrome (Choice C) and Klinefelter syndrome (Choice D) are chromosomal disorders that do not directly lead to the respiratory issues observed in cystic fibrosis.

2. What is the central layer of the embryo from which the bones and muscles develop?

• A. neural tube
• B. mesoderm
• C. ectoderm
• D. umbilical cord

Correct answer: B

Rationale: The correct answer is mesoderm. The mesoderm is the middle layer of the embryo that gives rise to the bones, muscles, and other connective tissues. The neural tube (choice A) develops into the nervous system, not bones and muscles. The ectoderm (choice C) forms the skin and nervous system, not bones and muscles. The umbilical cord (choice D) is a structure that connects the developing fetus to the placenta; it is not a layer of the embryo that gives rise to bones and muscles.

3. Which neonatal complications are associated with hypertension in the mother?

• A. Intrauterine growth restriction (IUGR) and prematurity.
• B. Seizures and cerebral hemorrhage.
• C. Hepatic or renal dysfunction.
• D. Placental abruption and DIC.

Correct answer: A

Rationale: Neonatal complications associated with maternal hypertension are primarily due to placental insufficiency. The correct answer is A, which includes Intrauterine Growth Restriction (IUGR) and prematurity. These complications arise from inadequate blood flow to the fetus, leading to growth restriction and premature birth. Choices B, seizures, and cerebral hemorrhage are more commonly maternal complications rather than neonatal ones. Choice C, hepatic or renal dysfunction, pertains to maternal complications of hypertensive disorders in pregnancy, not neonatal issues. Choice D, placental abruption, and Disseminated Intravascular Coagulation (DIC) are conditions linked to maternal morbidity and mortality, not neonatal complications.

4. A newborn who was born post-term is being assessed by a nurse. Which of the following findings should the nurse expect?

• A. A Rh-negative mother who has an Rh-positive infant
• B. A Rh-positive mother who has an Rh-negative infant
• C. A Rh-positive mother who has an Rh-positive infant
• D. A Rh-negative mother who has an Rh-negative infant

Correct answer: A

Rationale: The correct answer is A: 'A Rh-negative mother who has an Rh-positive infant.' In cases where the newborn is born post-term, the mismatched Rh factor between the mother (Rh-negative) and the infant (Rh-positive) can lead to hemolytic disease of the newborn. This condition occurs when maternal antibodies attack fetal red blood cells, causing hemolysis. This can result in jaundice, anemia, and other serious complications for the infant. Choices B, C, and D are incorrect because they do not reflect the mismatched Rh factor scenario that poses a risk for hemolytic disease of the newborn.

5. What is the primary role of meiosis in the production of sperm and ova?

• A. To reduce the chromosome number by half
• B. To increase the chromosome number
• C. To create identical copies of chromosomes
• D. To repair damaged chromosomes

Correct answer: A

Rationale: The correct answer is A. Meiosis is a type of cell division that reduces the chromosome number by half, resulting in the formation of sperm and ova. Choice B is incorrect because meiosis does not increase the chromosome number. Choice C is incorrect because meiosis creates genetically diverse gametes, not identical copies of chromosomes. Choice D is incorrect because meiosis does not primarily function to repair damaged chromosomes.

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