which condition is commonly screened for in newborns using the guthrie test
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HESI PN Exit Exam 2024

1. Which condition is commonly screened for in newborns using the Guthrie test?

Correct answer: A

Rationale: The Guthrie test is specifically designed to screen newborns for phenylketonuria (PKU), a metabolic disorder that can lead to intellectual disability if left untreated. Phenylketonuria is caused by the deficiency of an enzyme required to metabolize the amino acid phenylalanine. Screening for PKU in newborns is crucial as early diagnosis and intervention can prevent the severe consequences associated with the condition. Choices B, C, and D are incorrect as the Guthrie test is not used to screen for cystic fibrosis, Down syndrome, or sickle cell anemia.

2. Which of the following is an appropriate intervention for a patient experiencing a hypertensive crisis?

Correct answer: B

Rationale: Administering a beta-blocker intravenously is the correct intervention for a patient experiencing a hypertensive crisis. Beta-blockers help quickly reduce blood pressure and prevent complications such as stroke or heart attack. Placing the patient in a supine position can worsen the condition by reducing venous return and increasing the workload of the heart. Encouraging the patient to drink fluids is not recommended as it can exacerbate hypertension by increasing fluid volume. Applying a cold compress to the forehead does not address the underlying cause of the hypertensive crisis and is unlikely to provide significant benefit.

3. Which of the following is a critical step in preventing ventilator-associated pneumonia (VAP)?

Correct answer: B

Rationale: Elevating the head of the bed to 30-45 degrees is a critical step in preventing ventilator-associated pneumonia (VAP) because it helps reduce the risk of aspiration, which is a significant factor in the development of VAP. Elevating the head of the bed enhances pulmonary hygiene, decreases the risk of microaspiration, and promotes better lung function. Performing oral care with chlorhexidine is essential for oral hygiene but is not specifically aimed at preventing VAP. Administering prophylactic antibiotics without a clear indication can lead to antibiotic resistance and is not a recommended routine practice to prevent VAP. Changing the ventilator circuit daily is essential for infection control but is not the most critical step in preventing VAP.

4. According to the principle of asepsis, which situation should the PN consider to be sterile?

Correct answer: A

Rationale: According to the principle of asepsis, the one-inch border around the edges of a sterile field set up in the operating room is considered non-sterile, while the central area remains sterile. Therefore, the PN should consider the situation described in choice A to be sterile. Choice B is incorrect because a glove that may have touched hair is contaminated. Choice C is incorrect as a sterile item placed on a damp surface is considered contaminated. Choice D is incorrect as a sterile kit set up at the PN's waist level is prone to contamination.

5. Which task could the PN safely delegate to the UAP?

Correct answer: A

Rationale: The correct answer is A because oral feeding of a child is a task that can be safely delegated to an unlicensed assistive personnel (UAP). This task involves providing basic care and does not require specialized nursing skills. Choices B, C, and D involve assessments, recording client goals, and evaluating pain, respectively, which all require specialized nursing knowledge, judgment, and skills. These tasks are not within the scope of practice for a UAP.

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