HESI LPN
HESI PN Exit Exam 2023 Questions
Question 1 of 5
Which vitamin deficiency is most associated with night blindness?
Correct Answer: A
Rationale: The correct answer is Vitamin A. Vitamin A deficiency leads to night blindness because this vitamin is crucial for the formation of rhodopsin, a photopigment in the retina. Rhodopsin is essential for vision in low-light conditions. Vitamin B12 deficiency can lead to anemia and neurological issues but is not directly related to night blindness. Vitamin C deficiency can cause scurvy, affecting connective tissues, but not night vision. Vitamin D deficiency can lead to bone disorders but is not primarily associated with night blindness.
Question 2 of 5
Which disorder is characterized by demyelination of neurons in the central nervous system?
Correct Answer: A
Rationale: Multiple sclerosis is the correct answer. It is an autoimmune disease that specifically targets and damages the myelin sheath surrounding neurons in the central nervous system. This demyelination disrupts the transmission of nerve signals and leads to a variety of neurological symptoms. Parkinson's disease (Choice B), Alzheimer's disease (Choice C), and Huntington's disease (Choice D) are neurodegenerative disorders that do not primarily involve demyelination of neurons in the CNS. Parkinson's disease is characterized by the loss of dopamine-producing neurons, Alzheimer's disease by the formation of plaques and tangles in the brain, and Huntington's disease by a genetic mutation affecting nerve cells.
Question 3 of 5
The client diagnosed with HIV is taught by the nurse that the condition is transmitted through
Correct Answer: A
Rationale: HIV can be transmitted from a mother to her baby during childbirth or breastfeeding, making choice A the correct answer. Tears, human bites, and insect bites are not common modes of HIV transmission. While human bites can potentially transmit the virus, it is less common compared to mother-to-child transmission.
Question 4 of 5
Which of the following is MOST LIKELY to increase the risk of a medication error?
Correct Answer: B
Rationale: Errors in the calculation of medication dosages are a significant risk factor for medication errors. When dosage calculations are incorrect, it can lead to administering the wrong amount of medication, posing serious harm to the patient. Avoiding abbreviations for medications, barcoding medication orders, and utilizing unit dose dispensers are all strategies aimed at reducing medication errors by enhancing accuracy and safety. Therefore, choices A, C, and D are incorrect as they are practices that help decrease, rather than increase, the risk of medication errors.
Question 5 of 5
The nurse is teaching a client with diabetes mellitus how to differentiate between hypoglycemia and ketoacidosis. What statement indicates to the nurse that the client has an understanding of this condition?
Correct Answer: D
Rationale: The correct answer is D. Shakiness is a symptom of hypoglycemia, which is low blood sugar. Taking glucose can help raise blood sugar levels quickly in this situation. Fruity breath odor and excessive urination are signs of ketoacidosis, a complication of diabetes involving high levels of ketones in the blood. Blurred vision can be a symptom of high blood sugar, but it is not specific to hypoglycemia.