the nurse is assessing an infant with pyloric stenosis which pathophysiological mechanism is the most likely consequence of this infants clinical pict
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HESI RN

HESI Pediatrics Practice Exam

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?

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. When planning care for a child diagnosed with rheumatic fever, what is the primary goal of nursing care?

Correct answer: C

Rationale: The primary goal of nursing care for a child diagnosed with rheumatic fever is to prevent cardiac damage. Rheumatic fever can lead to complications affecting the heart, making it crucial to monitor and prevent cardiac involvement to avoid long-term consequences. While addressing fever and joint pain are important aspects of care, preventing cardiac damage takes precedence in managing rheumatic fever. Therefore, choices A, B, and D are not the primary goals of nursing care in this case.

3. A child who weighs 25 kg is receiving IV ampicillin 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?

Correct answer: A

Rationale: To calculate the dose for each administration, multiply the child's weight (25 kg) by the dose (300 mg/kg/24 hours) and divide by the number of doses per day (6, as doses are every 4 hours). This gives us (25 kg * 300 mg/kg / 24 hours) / 6 doses = 1875 mg. Therefore, the nurse should administer 1875 mg for each dose. Choice B, 625 mg, is incorrect as it does not consider the correct calculation based on the weight and prescribed dose. Choice C, 2000 mg, is incorrect as it is not derived from the correct dosage calculation. Choice D, 1500 mg, is incorrect as it does not reflect the accurate dosage calculation based on the weight of the child and the prescribed dose.

4. The nurse is caring for a 14-year-old adolescent who was admitted to the hospital after a suicide attempt. The adolescent’s mood appears stable, and the healthcare provider has recommended discharge. What is the nurse’s priority action?

Correct answer: A

Rationale: The priority action for the nurse is to ensure that a safety plan is in place before discharge. A safety plan is essential to assist the adolescent in managing future crises and decreasing the likelihood of another suicide attempt. It provides guidance on coping strategies and resources to help the adolescent stay safe in times of distress.

5. When assessing a child with suspected meningitis, which finding is a characteristic sign of meningitis?

Correct answer: C

Rationale: Photophobia, which is sensitivity to light, is a characteristic sign of meningitis in children. It commonly presents along with symptoms such as headache and neck stiffness. This symptom is important to recognize early for prompt diagnosis and treatment of meningitis.

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