HESI PN Exit Exam 2024 Quizlet

Correct Answer: A

Rationale: The correct answer is A: 'Breaks down lactose into glucose and galactose.' Lactase is an enzyme in the small intestine that specifically breaks down lactose, the sugar found in milk, into glucose and galactose for absorption. Choice B is incorrect because proteins are broken down into amino acids by protease enzymes. Choice C is incorrect because the enzyme amylase converts starch into maltose. Choice D is incorrect as lipase enzymes break down fats into fatty acids.

Correct Answer: B

Rationale: Phantom limb pain is a type of pain that feels like it's coming from a body part that's no longer there. It is essential to understand that phantom limb pain is real and should be managed appropriately. Administering prescribed analgesics is the most effective way to address this discomfort. Applying heat, elevating the residual limb, and performing range-of-motion exercises are not effective in managing phantom limb pain since the pain originates from the brain expecting sensory input from the missing limb, rather than being related to physical factors that heat, elevation, or exercises can address.

Correct Answer: C

Rationale: Serum creatinine is the most important lab value to review before administering an antibiotic that can cause nephrotoxicity. This is because serum creatinine is a key indicator of kidney function. An elevated serum creatinine level may indicate impaired renal function, and administering nephrotoxic drugs in such situations can further damage the kidneys. Monitoring serum creatinine levels helps healthcare providers assess renal function and make informed decisions regarding drug administration. Choices A, B, and D are not as directly related to kidney function and nephrotoxicity, making them less crucial in this scenario. Hemoglobin and hematocrit levels assess for anemia, serum calcium levels are more related to bone health and nerve function, and WBC count is associated with immune response, none of which directly reflect kidney function or the risk of nephrotoxicity.

Correct Answer: C

Rationale: A sudden increase in drainage from a ventriculostomy could indicate a serious complication such as increased intracranial pressure or hemorrhage. The priority action in this situation is to notify the healthcare provider immediately to ensure prompt evaluation and intervention. Increasing the head of the bed may be beneficial in some situations but is not the first action to take. Clamping the ventriculostomy tube is inappropriate as it can lead to increased intracranial pressure. Measuring the client's head circumference is not the priority when there is a sudden increase in ventriculostomy drainage.

Correct Answer: A

Rationale: The correct answer is A: Systemic lupus erythematosus (SLE). The 'butterfly rash' across the cheeks and nose is a classic sign of SLE, an autoimmune disease. This rash is a key dermatological manifestation of SLE, often triggered or worsened by exposure to sunlight. Choices B, C, and D are incorrect because the 'butterfly rash' is not commonly associated with rheumatoid arthritis, psoriasis, or dermatomyositis.