HESI LPN
HESI Focus on Maternity Exam
1. 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.
2. When both of the alleles for a trait, such as hair color, are the same, the person is said to be _____ for that trait.
- A. monozygous
- B. dizygous
- C. homozygous
- D. hemizygous
Correct answer: C
Rationale: A person is homozygous for a trait when they have two identical alleles for that trait. In this case, both alleles are the same, indicating a homozygous genotype. Choice A, 'monozygous,' is incorrect as it refers to identical twins originating from a single fertilized egg. Choice B, 'dizygous,' is also incorrect as it refers to fraternal twins or individuals that develop from two separate fertilized eggs. Choice D, 'hemizygous,' is incorrect because it describes a genetic condition where only one allele is present in a diploid organism, typically related to genes on the sex chromosomes.
3. A client has active genital herpes simplex virus type 2. Which of the following medications should the nurse plan to administer?
- A. Metronidazole
- B. Penicillin
- C. Acyclovir
- D. Gentamicin
Correct answer: C
Rationale: Acyclovir is the antiviral medication specifically used to treat herpes simplex virus infections, including genital herpes caused by herpes simplex virus type 2. Metronidazole (Choice A) is an antibiotic used for different types of infections, but not for viral infections like herpes. Penicillin (Choice B) is an antibiotic effective against bacterial infections, not viruses like herpes. Gentamicin (Choice D) is an antibiotic mainly used to treat bacterial infections, not viral infections like herpes.
4. A premature infant with respiratory distress syndrome (RDS) receives artificial surfactant. How does the nurse explain surfactant therapy to the parents?
- A. “Surfactant improves the ability of your baby’s lungs to exchange oxygen and carbon dioxide.”
- B. “The drug keeps your baby from requiring too much sedation.”
- C. “Surfactant is used to reduce episodes of periodic apnea.”
- D. “Your baby needs this medication to fight a possible respiratory tract infection.”
Correct answer: A
Rationale: Artificial surfactant can be administered as an adjunct to oxygen and ventilation therapy for premature infants with respiratory distress syndrome (RDS). It helps improve respiratory compliance by aiding in the exchange of oxygen and carbon dioxide until the infant can produce enough surfactant naturally. The correct explanation to the parents would be that surfactant therapy enhances the baby’s lung function by facilitating the exchange of oxygen and carbon dioxide. Choice B is incorrect because surfactant therapy does not affect sedation needs. Choice C is inaccurate as surfactant is not used to reduce episodes of periodic apnea. Choice D is incorrect as surfactant is not administered to fight respiratory tract infections; it specifically targets improving lung function in RDS.
5. The nurse is receiving a report for a laboring client who arrived in the emergency center with ruptured membranes that the client did not recognize. Which is the priority nursing action to implement when the client is admitted to the labor and delivery suite?
- A. Begin a pad count
- B. Prepare to start an IV
- C. Take the client's temperature
- D. Monitor amniotic fluid for meconium
Correct answer: C
Rationale: The priority nursing action when a client with ruptured membranes is admitted to the labor and delivery suite is to take the client's temperature. This is crucial to assess for infection, especially when the duration of membrane rupture is unknown. Beginning a pad count, preparing to start an IV, and monitoring amniotic fluid for meconium are important actions but are not as immediate or critical as assessing for infection through temperature measurement.
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