HESI RN
HESI Pediatrics Practice Exam
1. When should a mother introduce solid foods to her 4-month-old baby girl? The mother states, 'My mother says I should put rice cereal in the baby's bottle now.' The nurse should instruct the mother to introduce solid foods when her child exhibits which behavior?
- A. Stops rooting when hungry
- B. Opens mouth when food comes her way
- C. Awakens once for nighttime feedings
- D. Gives up a bottle for a cup
Correct answer: B
Rationale: The correct answer is B: 'Opens mouth when food comes her way.' This behavior indicates readiness to start trying solid foods. Infants should be introduced to solid foods based on developmental cues, such as showing an interest in food and the ability to accept it. Choices A, C, and D are not indicative of readiness for solid foods. Stopping rooting when hungry is a reflex that may persist beyond the readiness for solids. Awakening for nighttime feedings is a normal behavior for a 4-month-old, and transitioning from a bottle to a cup is a later developmental milestone.
2. What information should the nurse provide to parents of a 3-year-old boy with Duchenne muscular dystrophy who inquire about the disease and future children?
- A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family
- B. The striated muscle groups of males can be impacted by a lack of the protein dystrophin in their mothers
- C. The male infant had a viral infection that went unnoticed and untreated so muscle damage was incurred
- D. Birth trauma with a breech vaginal birth causes damage to the spinal cord, thus weakening the muscles
Correct answer: A
Rationale: Duchenne muscular dystrophy is an X-linked recessive disorder caused by mutations in the DMD gene on the X chromosome. This disorder primarily affects males because they have one X chromosome, inherited from their mothers, who may be carriers of the mutated gene. Females have two X chromosomes, providing a protective effect as the normal gene on one X chromosome can compensate for the mutated gene on the other. Therefore, the nurse should explain to the parents that Duchenne muscular dystrophy is an inherited X-linked recessive disorder, which is why their son has the disease and why there is a risk of passing it on to future sons. Choice B is incorrect as it inaccurately implies that the lack of dystrophin in mothers impacts their sons' muscle groups. Choice C is incorrect as it suggests a viral infection caused the muscle damage, which is not the case with Duchenne muscular dystrophy. Choice D is incorrect as it attributes the muscle weakness to birth trauma instead of the genetic nature of the disorder.
3. What information should the nurse provide the parents of a 3-year-old boy with Duchenne muscular dystrophy (DMD) who are concerned about having more children?
- A. This is an inherited X-linked recessive disorder, which primarily affects male children in the family.
- B. The male infant had a viral infection that went unnoticed and untreated, leading to muscle damage.
- C. The mother's lack of the protein dystrophin can impact the XXXX muscle groups in males.
- D. Birth trauma during a breech vaginal birth can damage the spinal cord, resulting in muscle weakness.
Correct answer: A
Rationale: The correct answer is A. Duchenne muscular dystrophy is an inherited X-linked recessive disorder that primarily affects male children in the family. Since it is X-linked, sons inherit the mutation from their mothers who are carriers of the abnormal gene. Therefore, the nurse should explain to the parents that any future sons they have would have a 50% chance of inheriting the mutation and having DMD, while daughters would have a 50% chance of being carriers like the mother.
4. When caring for a 5-year-old child with a history of seizures who suddenly begins to have a tonic-clonic seizure, what should the nurse do first?
- A. Administer oxygen
- B. Insert an oral airway
- C. Turn the child to the side
- D. Start an IV line
Correct answer: C
Rationale: During a tonic-clonic seizure, the priority action is to turn the child to the side. This helps maintain an open airway and prevents aspiration of secretions or vomitus. It also helps in keeping the airway clear and promotes safety during the seizure episode. Administering oxygen, inserting an oral airway, and starting an IV line are important interventions but should follow the initial step of positioning the child to prevent airway obstruction.
5. What intervention should the nurse implement first for a male toddler brought to the emergency center approximately three hours after swallowing tablets from his grandmother’s bottle of digoxin (Lanoxin)?
- A. Administer activated charcoal orally
- B. Prepare gastric lavage
- C. Obtain a 12-lead electrocardiogram
- D. Give IV digoxin immune fab (Digibind)
Correct answer: D
Rationale: In cases of digoxin toxicity, IV digoxin immune fab (Digibind) is the antidote and should be administered first to counteract the effects of digoxin poisoning. This intervention is crucial in managing digoxin overdose and should be initiated promptly to improve patient outcomes. Activated charcoal and gastric lavage are not effective in treating digoxin poisoning and may not be beneficial at this stage. While obtaining an electrocardiogram is important to assess cardiac function, administering the antidote should take precedence to address the immediate life-threatening effects of digoxin toxicity.
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