Correct Answer: B

Rationale: Vomiting and poor appetite are common symptoms of neuroblastoma, a malignancy that arises from neural crest cells in the adrenal glands or sympathetic nervous system. This tumor can cause abdominal swelling due to its location and size, leading to symptoms like vomiting and decreased appetite. The presence of a maculopapular rash on the palms (Choice A) is not a typical finding associated with neuroblastoma. Irritability and failure to thrive (Choice C) are nonspecific symptoms that can be seen in various conditions but are not specifically indicative of neuroblastoma. Auscultation revealing wheezing with diminished lung sounds (Choice D) may suggest respiratory conditions rather than neuroblastoma.

Correct Answer: C

Rationale: When a 3-year-old hospitalized child wets the bed during a nap, the nurse should respond by changing the child's clothes without discussing the incident. This approach helps to maintain the child's dignity, avoid embarrassment, and reduce anxiety about bedwetting. Asking the child to help remake the bed (Choice A) may not be developmentally appropriate for a 3-year-old and could potentially lead to further distress. Putting clean sheets on the bed over a rubber sheet (Choice B) addresses the aftermath but does not directly address the child's needs and feelings. Explaining that children should call the nurse when they need to go to the bathroom (Choice D) may not be effective in this situation as the child may not have control over bedwetting during sleep.

Correct Answer: C

Rationale: When palpating the abdomen of an infant with hypertrophic pyloric stenosis (HPS), the nurse would expect to feel an olive-sized mass in the right upper quadrant. This finding is characteristic of HPS, where the hypertrophied pyloric muscle forms a palpable mass in the abdomen. Choices A, B, and D are incorrect. A distended colon is not a typical finding in HPS, marked tenderness around the umbilicus is not specific to this condition, and rhythmic peristaltic waves in the lower abdomen are not associated with HPS.

Correct Answer: C

Rationale: Visible peristalsis and weight loss are classic clinical manifestations of pyloric stenosis. Visible peristalsis refers to the wave-like movements in the abdomen caused by the stomach trying to empty into the intestines due to the obstruction at the pylorus. Weight loss is often seen due to inadequate feeding and vomiting associated with this condition. Choices A, B, and D are not typical of pyloric stenosis. Abdominal rigidity and pain on palpation are more indicative of conditions like peritonitis. A rounded abdomen and hypoactive bowel sounds are more suggestive of conditions like constipation or bowel obstruction. Distention of the lower abdomen and constipation are not specific to pyloric stenosis and may be seen in various gastrointestinal issues.

Correct Answer: D

Rationale: The correct answer is Glargine (Lantus) as it has the longest duration of action among the insulins listed, lasting 12 to 24 hours. Lispro (A) and Regular (B) are rapid-acting insulins with shorter durations of action. NPH (C) is an intermediate-acting insulin with a duration of action of about 12-16 hours. Therefore, Glargine is the correct choice for the insulin with the longest duration.