Which of the following statements is true of Alzheimer's disease (AD)?

Correct Answer: A

Rationale: The correct answer, A, is true because skills used over a lifetime are typically stored in long-term memory, which is less affected by Alzheimer's disease. This allows individuals to retain those skills longer compared to newly acquired skills. Choice B is incorrect because residents with AD may exhibit different signs and symptoms at different times due to the progressive nature of the disease. Choice C is incorrect as NAs should encourage residents to perform tasks independently to maintain their sense of autonomy. Choice D is incorrect because Alzheimer's disease is not a normal part of aging but rather a neurodegenerative disorder.

Correct Answer: C

Rationale: The correct answer is C: Blood oxygen level. A pulse oximeter measures the oxygen saturation levels in the blood by analyzing the amount of oxygen carried by hemoglobin. Hemoglobin absorbs different amounts of light based on the level of oxygen it is carrying, allowing the device to determine the oxygen saturation. A: Blood pressure is incorrect as a pulse oximeter does not measure blood pressure. B: Body temperature is incorrect as a pulse oximeter does not measure body temperature. D: Blood glucose level is incorrect as a pulse oximeter does not measure blood glucose level.

Correct Answer: C

Rationale: The correct answer is C, Scope of practice. The scope of practice defines the roles, responsibilities, and tasks that nursing assistants are legally allowed to perform. It is set by state or federal laws to ensure patient safety and quality care. A procedure manual (A) typically outlines specific steps for performing tasks but does not specify legal limitations. A cover letter (B) is a document used in job applications and is not related to defining nursing assistant tasks. Choice D is not provided.

Correct Answer: B

Rationale: The correct answer is B because wearing artificial nails in a long-term care facility can increase the risk of infection transmission to vulnerable residents. Even if the nails are clean and hands are washed frequently (options A and D), artificial nails harbor more bacteria than natural nails, posing a greater risk in healthcare settings. Limiting their use to special events (option C) does not address the potential risks associated with their use in such facilities. Therefore, the most appropriate and safest approach is to avoid wearing artificial nails altogether in care facilities to prioritize resident safety and infection control.

Correct Answer: D

Rationale: The correct answer is D: Scopy in endoscopy. A suffix is a word part added to the end of a root word to modify its meaning. In this case, "scopy" is a suffix that means "to examine or observe." Endoscopy is a medical procedure that involves examining the inside of the body using an endoscope. Choices A, B, and C are all prefixes, not suffixes, as they are added to the beginning of a root word to change its meaning. Therefore, the correct answer is D because it demonstrates the characteristic of a suffix by modifying the root word "end" to create a new word with a specific meaning related to the medical procedure.