HESI LPN
HESI Focus on Maternity Exam
1. The healthcare provider is planning care for a client at 30 weeks gestation who is experiencing preterm labor. Which medication is most important in preventing this fetus from developing respiratory distress syndrome?
- A. Ampicillin 1 gram IV push every 8 hours
- B. Betamethasone 12 mg deep IM
- C. Terbutaline 0.25 mg subcutaneously every 15 minutes for 3 doses
- D. Butorphanol tartrate 1 mg IV push every 2 hours as needed
Correct answer: B
Rationale: Betamethasone is a corticosteroid given to stimulate fetal lung maturity and reduce the risk of respiratory distress syndrome in preterm infants. Ampicillin (Choice A) is an antibiotic and does not prevent respiratory distress syndrome. Terbutaline (Choice C) is a tocolytic used to inhibit contractions and does not directly prevent respiratory distress syndrome. Butorphanol tartrate (Choice D) is an opioid analgesic and does not have a role in preventing respiratory distress syndrome in preterm infants.
2. Which of the following is a sexually transmitted infection that, in advanced stages, can attack major organ systems?
- A. Rubella
- B. Syphilis
- C. Cystic fibrosis
- D. Phenylketonuria
Correct answer: B
Rationale: Syphilis is the correct answer. Syphilis is a sexually transmitted infection caused by the bacterium Treponema pallidum. If left untreated, it can progress through various stages and potentially attack major organ systems, causing severe complications. Rubella, Cystic fibrosis, and Phenylketonuria are not sexually transmitted infections. Rubella is a viral infection, Cystic fibrosis is a genetic disorder affecting the lungs and digestive system, and Phenylketonuria is a genetic metabolic disorder. These conditions do not typically affect major organ systems in the same way as untreated syphilis.
3. Which FHR finding is the most concerning to the nurse providing care to a laboring client?
- A. Accelerations with fetal movement.
- B. Early decelerations.
- C. Average FHR of 126 beats per minute.
- D. Late decelerations.
Correct answer: D
Rationale: Late decelerations are caused by uteroplacental insufficiency, resulting in fetal hypoxemia. They are considered ominous if persistent, indicating compromised oxygen supply to the fetus. Accelerations with fetal movement (Choice A) are reassuring signs of fetal well-being. Early decelerations (Choice B) are typically benign, associated with head compression during contractions. An average FHR of 126 beats per minute (Choice C) falls within the normal range for fetal heart rate and is not concerning. Therefore, the most concerning FHR finding in a laboring client is late decelerations (Choice D).
4. A nurse on an antepartum unit is reviewing the medical records for four clients. Which of the following clients should the nurse assess first?
- A. A client who has diabetes mellitus and an HbA1c of 5.8%
- B. A client who has preeclampsia and a creatinine level of 1.1 mg/dL
- C. A client who has hyperemesis gravidarum and a sodium level of 110 mEq/L
- D. A client who has placenta previa and a hematocrit of 36%
Correct answer: C
Rationale: A sodium level of 110 mEq/L is critically low and can indicate severe dehydration and electrolyte imbalance, requiring immediate intervention.
5. When children who are reared by adoptive parents are nonetheless more similar to their natural parents in a trait, it can be concluded that:
- A. the genetic characteristics of the children change over time.
- B. heredity is solely responsible for how a child grows.
- C. the environment is solely responsible for the development of those characteristics.
- D. genetics play a role in the development of those characteristics.
Correct answer: D
Rationale: When children exhibit traits that are more similar to their biological parents than their adoptive parents, it indicates a strong genetic influence on those traits. This similarity suggests that genetics play a significant role in the development of the observed characteristics. Choice A is incorrect because genetic characteristics do not change over time in this context. Choice B is incorrect as it implies that heredity is the only factor, disregarding the impact of the environment. Choice C is also incorrect as it suggests that only the environment influences trait development, overlooking the genetic contribution.
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