Pediatrics HESI 2023

Correct Answer: D

Rationale: Weight gain is the expected finding in a child with hypothyroidism. Hypothyroidism leads to a slowed metabolism, which can result in weight gain. Choices A, B, and C are not typical findings in hypothyroidism. Nervousness and heat intolerance are more commonly associated with hyperthyroidism, where the body is in a state of overactivity. Smooth velvety skin is not a characteristic sign of hypothyroidism.

Correct Answer: C

Rationale: The most appropriate response for the nurse is to emphasize the importance of consistency in discipline when dealing with toddlers. Toddlers are at an age where they are learning boundaries and acceptable behaviors. By being consistent, parents can help their child understand what is expected of them and establish a sense of structure and routine. Choices A, B, and D do not provide constructive advice or guidance on how to address the issue of disciplining a 2-year-old. Choice A merely acknowledges the age without providing guidance, choice B seeks more information without offering support, and choice D labels the age without offering practical advice on discipline.

Correct Answer: D

Rationale: Elevating the head of the bed is essential in the care of an infant with RSV as it helps improve breathing by reducing congestion and promoting drainage. This position also aids in maintaining patent airways and can enhance comfort for the infant. Providing small, frequent feedings (Choice A) is generally appropriate for infants but is not a specific intervention for RSV. Administering antibiotics (Choice B) is not indicated for RSV, as it is a viral infection and antibiotics are ineffective against viruses. Maintaining strict isolation (Choice C) is important to prevent the spread of infections, but it is not a direct care intervention for managing RSV symptoms.

Correct Answer: B

Rationale: A lumbar puncture is performed to obtain a sample of cerebrospinal fluid for analysis. This fluid is then examined for signs of infection, bleeding, or other abnormalities. Measuring the pressure of cerebrospinal fluid is typically done during the procedure itself, but it is not the primary purpose of the lumbar puncture. While a lumbar puncture can indirectly help relieve intracranial pressure by removing excess cerebrospinal fluid, this is not its primary purpose. Assessing the presence of infection in the spinal fluid is part of the analysis that follows the collection of the sample, making it a secondary outcome of the procedure.

Correct Answer: B

Rationale: The correct answer is B: Tissue oxygen needs. Polycythemia occurs as the body's response to chronic hypoxia by increasing RBC production to enhance oxygen delivery. In tetralogy of Fallot, a congenital heart defect, the heart's structure causes reduced oxygen levels in the blood. This chronic hypoxia stimulates the bone marrow to produce more red blood cells, leading to an elevated RBC count. Choice A is incorrect as low blood pressure is not directly related to polycythemia in this context. Choice C, diminished iron level, is not the cause of polycythemia in tetralogy of Fallot. Choice D, hypertrophic cardiac muscle, is not the primary cause of the elevated RBC count in this case.