which is a causative factor of hirschsprung disease
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Nursing Elites

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Medical Surgical Assignment Exam HESI

1. What is a causative factor of Hirschsprung disease?

Correct answer: C

Rationale: The correct answer is C: The absence of parasympathetic ganglion cells in a portion of the colon is a causative factor of Hirschsprung disease. This absence leads to the inability of the affected segment of the colon to relax, causing a functional obstruction. Choices A, B, and D are incorrect. Frequent evacuation of solids, liquid, and gases, excessive peristaltic movement, and one portion of the bowel telescoping into another are not causative factors of Hirschsprung disease.

2. A client with cancer is receiving chemotherapy with a known vesicant. The client's IV has been in place for 72 hours. The nurse determines that a new IV site cannot be obtained and leaves the present IV in place. What is the greatest clinical risk related to this situation?

Correct answer: A

Rationale: The correct answer is A: Impaired skin integrity. In this situation, the greatest clinical risk is related to impaired skin integrity due to the potential extravasation of the vesicant. Vesicants are substances that can cause severe tissue damage if they leak into the surrounding tissues. Choices B, C, and D are not the most significant risks in this scenario. Fluid volume excess, acute pain, and peripheral neurovascular dysfunction are not directly associated with leaving the IV in place with a known vesicant for an extended period.

3. The mother of a child who has been diagnosed with varicella asks the nurse when the child can return to school. When is the child no longer contagious?

Correct answer: D

Rationale: The correct answer is D: 'When the lesions are crusted over.' Varicella is no longer contagious once the lesions are dry and crusted. This stage indicates that the active viral shedding has significantly decreased, reducing the risk of transmission. Choice A, 'When the fever dissipates,' is incorrect because the presence of fever does not necessarily correlate with the contagiousness of varicella. Choice B, 'After the incubation period,' is incorrect as the incubation period occurs before the onset of symptoms and is not relevant to determining contagiousness. Choice C, 'When the lesions have healed,' is incorrect as healed lesions can still be contagious if they are not crusted over.

4. A client with rheumatoid arthritis has elevated serum rheumatoid factor. Which interpretation of this finding should the nurse make?

Correct answer: B

Rationale: The correct interpretation of elevated serum rheumatoid factor in a client with rheumatoid arthritis is confirmation of the autoimmune disease process. Rheumatoid factor is a marker for autoimmune activity, thus confirming the diagnosis of rheumatoid arthritis. Choice A is incorrect as elevated rheumatoid factor does not specifically indicate spread of the disease to the kidney. Choice C is incorrect as elevated rheumatoid factor does not always represent a decline in the client's condition. Choice D is incorrect as elevated rheumatoid factor is not an indication of the onset of joint degeneration, but rather points towards autoimmune activity.

5. Recurrent abdominal pain (RAP) is most often seen in school-age or adolescent children. The nurse should assess closely for what potential problem?

Correct answer: D

Rationale: The correct answer is D: 'Emotional problems.' Recurrent abdominal pain (RAP) in children is frequently associated with emotional factors rather than physical issues, relational problems, or eating disorders. Children may manifest emotional distress through physical symptoms like abdominal pain, making it crucial for nurses to assess for emotional problems as a potential cause.

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