Nursing Elites

1. The healthcare provider is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant's clinical picture?

• A. Metabolic alkalosis.
• B. Respiratory acidosis.
• C. Metabolic acidosis.
• D. Respiratory alkalosis.

Correct answer: A

Rationale: Pyloric stenosis leads to obstruction at the outlet of the stomach, causing frequent vomiting and loss of stomach acids. This results in a loss of hydrochloric acid and hydrogen ions, leading to metabolic alkalosis due to an increase in serum bicarbonate levels. Therefore, the correct answer is metabolic alkalosis. Choice B, respiratory acidosis, is incorrect as it is not typically associated with pyloric stenosis. Choice C, metabolic acidosis, is incorrect because the loss of stomach acids in pyloric stenosis leads to metabolic alkalosis, not acidosis. Choice D, respiratory alkalosis, is also incorrect as it is not the usual consequence of pyloric stenosis.

2. The healthcare provider is providing postoperative care to a 4-year-old child who underwent tonsillectomy. The provider notices that the child is frequently swallowing. What should the provider do first?

• A. Check the child’s throat for signs of bleeding
• B. Offer the child ice chips to soothe the throat
• C. Elevate the head of the child’s bed
• D. Administer prescribed pain medication

Correct answer: A

Rationale: Frequent swallowing after tonsillectomy may indicate bleeding, which requires immediate assessment and intervention. Checking the child’s throat for signs of bleeding is the priority to ensure timely identification and management of any potential bleeding complications.

3. A child who weighs 25 kg is receiving IV ampicillin at a dose of 300 mg/kg/24 hours in equally divided doses every 4 hours. How many milligrams should the nurse administer to the child for each dose?

• A. 1875 mg
• B. 625 mg
• C. 2000 mg
• D. 1500 mg

Correct answer: A

Rationale: To calculate the correct dose for each administration, you first need to find the total daily dose: 300 mg/kg * 25 kg = 7500 mg/day. Since this total dose is divided into equally divided doses every 4 hours, there are 6 doses in 24 hours. Therefore, 7500 mg ÷ 6 doses = 1250 mg per dose. The nurse should administer 1250 mg every 4 hours, resulting in a total of 1875 mg for each dose in a 24-hour period. Choice A, 1875 mg, is the correct answer. Choice B, 625 mg, is incorrect as it does not consider the total daily dose and the frequency of administration. Choice C, 2000 mg, is incorrect as it is not the calculated dosage based on the given parameters. Choice D, 1500 mg, is also incorrect as it does not reflect the correct dosage calculation for each dose.

4. A 9-week-old infant is scheduled for cleft lip repair. Which information is most important for the nurse to convey to the surgeon before transporting the infant to the surgical suite?

• A. Red blood cell count of 2.3 million/mm³
• B. White blood cell count of 10,000/mm³
• C. Weight gain of 2 pounds since birth
• D. Urine specific gravity is 1.011

Correct answer: A

Rationale: The correct answer is A because a low red blood cell count may indicate anemia, which could pose risks during surgery. Anemia can affect oxygen delivery to tissues, impacting wound healing and overall surgical outcomes. The other options, such as white blood cell count, weight gain, and urine specific gravity, are less critical for immediate surgical considerations. White blood cell count is more related to infection risk postoperatively rather than immediate surgical risk. Weight gain reflects good overall growth but does not impact the immediate surgical situation. Urine specific gravity is more indicative of hydration status rather than immediate surgical risk.

5. The infant scheduled for reduction of intussusception passes a soft-formed brown stool the day before the procedure. What intervention should the nurse implement?

• A. Instruct the parents that the infant needs to be NPO.
• B. Notify the healthcare provider of the passage of brown stool.
• C. Obtain a stool specimen for laboratory analysis.
• D. Ask the parents about recent changes in the infant's diet.

Correct answer: B

Rationale: Notifying the healthcare provider is crucial when an infant scheduled for intussusception reduction passes a soft-formed brown stool as it may indicate spontaneous reduction of the intussusception. The healthcare provider needs to be informed to assess if the procedure is still necessary or if further evaluation is required. Instructing the parents that the infant needs to be NPO (nothing by mouth) is not the immediate action required in this situation. Obtaining a stool specimen for laboratory analysis is not necessary as the soft-formed brown stool is likely a result of the intussusception spontaneously reducing. Asking about recent changes in the infant's diet is not the most appropriate action when brown stool is passed before the procedure for intussusception reduction.

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