HESI LPN
Pediatric HESI 2023
1. Which observation of the exposed abdomen is most indicative of pyloric stenosis?
- A. abdominal rigidity
- B. substernal retraction
- C. palpable olive-like mass
- D. marked distention of the lower abdomen
Correct answer: C
Rationale: In pyloric stenosis, a palpable olive-like mass in the abdomen is a classic finding. This mass is due to the hypertrophied pyloric muscle. Abdominal rigidity (choice A) is associated with conditions like peritonitis, substernal retraction (choice B) is typically seen in respiratory distress, and marked distention of the lower abdomen (choice D) is more characteristic of conditions like intestinal obstruction rather than pyloric stenosis.
2. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:
- A. nondisjunction.
- B. X-linked recessive inheritance.
- C. genomic imprinting.
- D. autosomal dominant inheritance.
Correct answer: A
Rationale: The correct answer is A: nondisjunction. Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division leading to an extra copy of chromosome 21. This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome. Choices B, C, and D are incorrect. X-linked recessive inheritance refers to genetic disorders carried on the X chromosome, genomic imprinting involves gene expression based on parental origin, and autosomal dominant inheritance relates to disorders caused by a dominant gene on one of the non-sex chromosomes. In the case of trisomy 21, the cause is specifically related to the error in chromosome division, making nondisjunction the most appropriate answer.
3. You are caring for a 6-year-old child with a possible fractured left arm and have reason to believe that the child was abused. How should you manage this situation?
- A. inform the parents of your suspicions
- B. call the police so the parents can be arrested
- C. advise the parents that the child needs to be transported
- D. transport the child to the hospital regardless of the parents' wishes
Correct answer: C
Rationale: In cases where child abuse is suspected, the priority is the safety and well-being of the child. Advising the parents that the child needs to be transported allows for the child to receive necessary medical care without immediate confrontation or escalating the situation. Calling the police to have the parents arrested without concrete evidence may not be appropriate and could further endanger the child. Informing the parents of suspicions may lead to interference or denial of necessary care. Transporting the child to the hospital is crucial, but involving and engaging with the parents in a non-confrontational manner is the initial step to ensure the child's safety and well-being.
4. An order is written for an isotonic enema for a 2-year-old child. What is the maximum amount of fluid the nurse should administer without a specific order from the health care provider?
- A. 100 to 150 mL
- B. 155 to 250 mL
- C. 255 to 360 mL
- D. 365 to 500 mL
Correct answer: B
Rationale: For a 2-year-old child, the maximum recommended amount of fluid for an isotonic enema is between 155 to 250 mL to prevent overdistension and potential harm. Choice A (100 to 150 mL) is too low and may not be effective in achieving the desired outcome. Choices C (255 to 360 mL) and D (365 to 500 mL) exceed the safe range for a 2-year-old child and can lead to overdistension, electrolyte imbalance, or other complications. Therefore, the correct answer is B.
5. An infant who had cardiac surgery for a congenital defect is to be discharged. What should the nurse emphasize to the parents regarding administering the prescribed antibiotic?
- A. Give the antibiotic between feedings.
- B. Ensure that the antibiotic is administered as prescribed.
- C. Shake the bottle thoroughly before administering the antibiotic.
- D. Keep the antibiotic in the refrigerator after opening the bottle.
Correct answer: B
Rationale: The correct answer is B: 'Ensure that the antibiotic is administered as prescribed.' It's crucial to stress the importance of following the prescribed antibiotic regimen to prevent infections and promote proper healing after cardiac surgery. Choice A is incorrect because it does not address the fundamental aspect of adherence to the prescription. Choice C is incorrect as shaking the bottle may not be necessary for all antibiotics and is not a critical instruction in this context. Choice D is incorrect as storage instructions are not directly related to the administration of the antibiotic as prescribed, which is the primary concern in this scenario.
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