HESI LPN
Pediatrics HESI 2023
1. A healthcare professional is reviewing the laboratory report of a child with tetralogy of Fallot that indicates an elevated RBC count. What does the professional identify as the cause of the polycythemia?
- A. Low tissue oxygen needs
- B. Tissue oxygen needs
- C. Diminished iron level
- D. Hypertrophic cardiac muscle
Correct answer: B
Rationale: The correct answer is B: Tissue oxygen needs. Polycythemia occurs as the body's response to chronic hypoxia by increasing RBC production to enhance oxygen delivery. In tetralogy of Fallot, a congenital heart defect, the heart's structure causes reduced oxygen levels in the blood. This chronic hypoxia stimulates the bone marrow to produce more red blood cells, leading to an elevated RBC count. Choice A is incorrect as low blood pressure is not directly related to polycythemia in this context. Choice C, diminished iron level, is not the cause of polycythemia in tetralogy of Fallot. Choice D, hypertrophic cardiac muscle, is not the primary cause of the elevated RBC count in this case.
2. What complication of mumps is crucial for adolescents to prevent?
- A. Sterility
- B. Hypopituitarism
- C. Decreased libido
- D. Decreased androgens
Correct answer: A
Rationale: The correct answer is A, Sterility. Mumps can lead to sterility, particularly in adolescent males, highlighting the significance of vaccination to prevent this serious complication. While hypopituitarism (choice B) can be a potential complication of mumps, it is not as crucial to prevent in adolescents compared to the risk of sterility. Choices C and D, Decreased libido and Decreased androgens, are not direct complications of mumps and are not the primary concerns for adolescents in relation to mumps prevention.
3. A major developmental milestone of a toddler is the achievement of autonomy. What should the caregiver instruct the parents to do to enhance their toddler’s need for autonomy?
- A. Teach the child to share with others.
- B. Help the child learn society’s roles.
- C. Teach the child to accept external limits.
- D. Help the child develop internal controls.
Correct answer: D
Rationale: Toddlers are striving for autonomy during this developmental stage. Helping the child to develop internal controls, such as self-regulation and decision-making skills, enhances their sense of autonomy. Choice A, teaching the child to share, focuses more on social skills rather than autonomy. Choice B, helping the child learn society's roles, pertains to socialization rather than autonomy. Choice C, teaching the child to accept external limits, is about compliance with rules rather than fostering autonomy. Therefore, the most appropriate action to enhance a toddler's need for autonomy is to help them develop internal controls.
4. The nurse is teaching the parents of a 1-month-old girl with Down syndrome how to maintain good health for the child. Which instruction would the nurse be least likely to include?
- A. Getting cervical radiographs between 3 and 5 years of age
- B. Adhering to the special dietary needs of the child
- C. Getting an echocardiogram before 3 months of age
- D. Monitoring for symptoms of respiratory infection
Correct answer: B
Rationale: The correct answer is B. While special dietary needs may be important for a child with Down syndrome, they are typically not the primary concern for a 1-month-old. The nurse would be least likely to focus on this aspect as immediate issues such as monitoring for congenital heart defects (echocardiogram), cervical spine abnormalities (radiographs), and respiratory infections are more critical in the early months. Adhering to dietary needs is important, but it is usually addressed as the child grows older and is not the priority during the infant stage.
5. The nurse is caring for a 15-year-old boy who has sustained burn injuries. The nurse observes the burn developing a purplish color with discharge and a foul odor. The nurse suspects which infection?
- A. Burn wound cellulitis.
- B. Invasive burn cellulitis.
- C. Burn impetigo.
- D. Staphylococcal scalded skin syndrome.
Correct answer: B
Rationale: Invasive burn cellulitis is characterized by the burn developing a dark brown, black, or purplish color with discharge and a foul odor. This description aligns with the symptoms observed in the 15-year-old boy. Burn wound cellulitis (Choice A) typically presents with erythema, edema, warmth, and tenderness at the burn site, without the characteristic changes seen in this case. Burn impetigo (Choice C) is a superficial infection characterized by honey-colored crusts, not consistent with the purplish color and foul odor described. Staphylococcal scalded skin syndrome (Choice D) is a condition caused by exotoxins produced by Staphylococcus aureus, leading to widespread desquamation of the skin, but it does not typically present with the specific findings mentioned in the scenario.
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