HESI LPN
HESI Maternal Newborn
1. Which of the following statements about Rh incompatibility is true?
- A. Rh incompatibility occurs most commonly during a woman’s first pregnancy.
- B. Rh incompatibility is an untreatable condition that leaves a woman infertile for the rest of her life.
- C. Rh incompatibility is an abnormality that is transmitted from generation to generation and carried by a sex chromosome.
- D. Rh incompatibility occurs due to antibodies transmitted to a fetus during subsequent deliveries causing brain damage or death.
Correct answer: D
Rationale: Rh incompatibility occurs when the mother's antibodies attack the fetus's red blood cells, leading to serious complications, usually in subsequent pregnancies. Choice A is incorrect because Rh incompatibility often occurs in subsequent pregnancies, not necessarily the first one. Choice B is incorrect as Rh incompatibility does not render a woman infertile but can lead to complications during pregnancies. Choice C is incorrect as Rh incompatibility is not carried by a sex chromosome but involves the Rh factor on red blood cells.
2. A new parent is receiving discharge teaching about car seat safety from a nurse. Which statement by the parent indicates an understanding of the teaching?
- A. “I should position my baby’s car seat at a 45-degree angle in the car.”
- B. “I should place the car seat rear-facing until my baby is 12 months old.”
- C. “I should place the harness snugly in a slot above my baby’s shoulders.”
- D. “I should position the retainer clip at the top of my baby’s abdomen.”
Correct answer: A
Rationale: The correct answer is A. Positioning the car seat at a 45-degree angle is crucial to prevent the baby's head from falling forward, which can obstruct the airway. Choice B is incorrect because the recommendation is to keep the car seat rear-facing until the baby reaches the height or weight limit set by the car seat manufacturer, typically beyond 12 months. Choice C is incorrect as the harness should be snugly placed at or below the baby's shoulders, not above. Choice D is incorrect as the retainer clip should be positioned at armpit level to secure the harness straps properly.
3. _____ is a life-threatening disease, characterized by high blood pressure that may afflict women late in the second or early in the third trimester.
- A. Rubella
- B. Syphilis
- C. Preeclampsia
- D. Phenylketonuria
Correct answer: C
Rationale: Preeclampsia is a serious pregnancy complication characterized by high blood pressure that typically occurs in the second half of pregnancy. If left untreated, it can lead to severe complications for both the mother and the baby. Rubella (choice A) is a viral infection that can harm the developing fetus but is not directly related to high blood pressure in pregnancy. Syphilis (choice B) is a sexually transmitted infection that can affect pregnancy but does not specifically cause high blood pressure. Phenylketonuria (choice D) is a genetic disorder that affects metabolism and is not associated with high blood pressure in pregnancy.
4. A nurse on a labor and delivery unit is providing teaching to a client who plans to use hypnosis to control labor pain. Which of the following information should the nurse include?
- A. Focusing on controlling body functions
- B. Synchronized breathing is often helpful during hypnosis
- C. Hypnosis can be beneficial if practiced during the prenatal period
- D. Hypnosis is ineffective for controlling pain associated with labor
Correct answer: C
Rationale: Hypnosis can be an effective method of pain control during labor, especially if practiced during the prenatal period. Choice A is not specific to hypnosis and may not be directly related. Choice B is not essential for hypnosis and may not always be required. Choice D is incorrect as hypnosis has been shown to be beneficial for managing labor pain when done correctly, making it an inappropriate option to include in the teaching.
5. What term is used to describe each member of a pair of genes?
- A. allele
- B. zygote
- C. autosome
- D. node
Correct answer: A
Rationale: The correct answer is 'allele.' An allele refers to one of two or more versions of a gene located at the same position on a chromosome. In genetics, alleles are responsible for variations in inherited traits. Choice B, 'zygote,' is incorrect as a zygote is a fertilized egg cell formed by the fusion of two gametes. Choice C, 'autosome,' is incorrect as autosomes are non-sex chromosomes that determine an individual's genetic traits excluding sex-linked characteristics. Choice D, 'node,' is incorrect as it does not relate to the concept of genes or genetic inheritance.
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