HESI LPN
HESI Focus on Maternity Exam
1. What nursing action should the nurse implement for a 3-hour-old male infant who presents with cyanotic hands and feet, an axillary temperature of 96.5°F (35.8°C), a respiratory rate of 40 breaths per minute, and a heart rate of 165 beats per minute?
- A. Administer oxygen by mouth at 2L/min
- B. Gradually warm the infant under a radiant heat source
- C. Notify the pediatrician of the infant's vital signs
- D. Perform a heel-stick to maintain blood glucose levels
Correct answer: B
Rationale: The correct nursing action is to gradually warm the infant under a radiant heat source. The infant is presenting with signs of cold stress, indicated by cyanotic extremities and a low body temperature. Gradual warming is crucial to stabilize the infant's temperature and prevent further complications. Administering oxygen, notifying the pediatrician, or performing a heel-stick are not the priority actions in this scenario and may not address the immediate need to raise the infant's body temperature.
2. When does the fetus typically begin to turn and respond to external stimulation during pregnancy?
- A. During the second or third week
- B. After the first trimester
- C. Sometimes
- D. Never
Correct answer: B
Rationale: The correct answer is B. The fetus typically begins to respond to external stimulation much later in pregnancy, usually after the first trimester. During the second or third week of pregnancy, the fetus is still in the early stages of development and is not yet capable of turning or responding to external stimuli. Choices A, C, and D are incorrect because they do not accurately reflect the timeline of fetal development when it comes to responding to external stimulation.
3. Individuals with Klinefelter syndrome produce:
- A. less estrogen than normal males.
- B. less testosterone than normal males.
- C. less adenine than normal males.
- D. less thymine than normal males.
Correct answer: B
Rationale: Individuals with Klinefelter syndrome have an extra X chromosome (XXY), leading to reduced production of testosterone, the primary male sex hormone. This deficiency can result in various physical and developmental characteristics associated with the syndrome. Estrogen levels may actually be relatively elevated due to the imbalance between testosterone and estrogen. Choices C and D are incorrect as adenine and thymine are nucleotide bases found in DNA and are not related to hormone production.
4. An individual’s phenotype reflects both genetic and environmental influences.
- A. phenotype
- B. chromosome
- C. allele
- D. genotype
Correct answer: A
Rationale: The correct answer is A: phenotype. A phenotype is the observable characteristics of an individual, which result from the interaction of their genotype with the environment. This interaction between genetics and the environment determines how genes are expressed and how traits are manifested in an individual. Choices B, C, and D are incorrect because chromosomes, alleles, and genotypes are components of an individual's genetic makeup, but they do not directly reflect the observable traits influenced by both genetics and the environment.
5. Which statement by the client will assist the healthcare provider in determining whether she is in true labor as opposed to false labor?
- A. I passed some thick, pink mucus when I urinated this morning.
- B. My bag of waters just broke.
- C. The contractions in my uterus are getting stronger and closer together.
- D. My baby dropped, and I have to urinate more frequently now.
Correct answer: C
Rationale: The correct answer is C. Regular, strong contractions with the presence of cervical change indicate that the woman is experiencing true labor. Choice A indicates the passing of the mucus plug, which is a sign of early labor but not definitive for true labor. Choice B, the breaking of the bag of waters, is a sign of labor but does not confirm whether it is true or false labor. Choice D, the baby dropping and increased urination frequency, suggests lightening, a sign that labor may be approaching, but it does not confirm true labor.
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