HESI LPN
HESI Focus on Maternity Exam
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. A client experiencing preterm labor is being taught about terbutaline by a nurse. Which statement by the client indicates an understanding of the teaching?
- A. “The medication could cause me to experience heart palpitations.â€
- B. “This medication could cause me to experience blurred vision.â€
- C. “This medication could cause me to experience ringing in my ears.â€
- D. “This medication could cause me to experience frequent urination.â€
Correct answer: A
Rationale: The correct answer is A. Terbutaline is a beta-adrenergic agonist used to stop preterm labor. One of its common side effects is heart palpitations due to its action on beta receptors in the heart. Choices B and C are incorrect because blurred vision and ringing in the ears are not common side effects of terbutaline. Choice D is irrelevant to the side effects of terbutaline.
3. A client at 38 weeks of gestation has a prescription for intravaginal misoprostol. Which of the following statements should the nurse make?
- A. “You will need to stay in a side-lying position for 30 minutes after each dose.â€
- B. “You will receive an IV infusion of oxytocin 1 hour after your last dose.â€
- C. “You will receive a magnesium supplement immediately following therapy.â€
- D. “You will need to have a full bladder before the therapy begins.â€
Correct answer: A
Rationale: The correct answer is A. Instructing the client to stay in a side-lying position after receiving misoprostol intravaginally is essential. This position helps keep the medication in place, allowing for better absorption. Choice B is incorrect because oxytocin administration is not typically indicated after misoprostol use. Choice C is incorrect as magnesium supplementation is not part of the standard protocol for misoprostol administration. Choice D is incorrect as having a full bladder is not necessary before initiating misoprostol therapy.
4. Which of the following pairs share 100% of their genes?
- A. Biovular twins
- B. Fraternal twins
- C. Dizygotic (DZ) twins
- D. Monozygotic (MZ) twins
Correct answer: D
Rationale: The correct answer is Monozygotic (MZ) twins. Monozygotic twins, also known as identical twins, share 100% of their genes because they originate from the same fertilized egg that splits into two. Fraternal twins (choice B), also known as dizygotic (DZ) twins (choice C), result from two separate fertilized eggs and share approximately 50% of their genes. Biovular twins (choice A) is not a term used in genetics and does not describe a type of twinning.
5. Humans begin life as a single cell that divides repeatedly. This cell is known as a(n):
- A. zygote.
- B. gonadotrope.
- C. embryo.
- D. chromaffin.
Correct answer: A
Rationale: A zygote is the correct answer. It is the initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of human development. Choice B, gonadotrope, is incorrect as it refers to a type of hormone-secreting cell in the pituitary gland. Choice C, embryo, is incorrect as it is the stage of development after the zygote has implanted into the uterine wall and undergone initial cell divisions. Choice D, chromaffin, is incorrect as it refers to cells found in the adrenal medulla that produce and store catecholamines.
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