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

Correct Answer: A

Rationale: The correct answer is A because skills used over a lifetime are typically retained longer in individuals with Alzheimer's disease due to the concept of cognitive reserve. This means that engaging in mentally stimulating activities throughout life can help delay cognitive decline. Choice B is incorrect as symptoms of AD can vary greatly among individuals. Choice C is incorrect as NAs should promote independence and provide assistance based on individual needs. Choice D is incorrect as Alzheimer's is not a normal part of aging but a neurodegenerative disease.

Correct Answer: C

Rationale: The correct answer is C: Blood oxygen level. A pulse oximeter measures the oxygen saturation level in the blood, indicating how well oxygen is being carried to the body's tissues. It does this by shining light through the skin to detect the amount of oxygen-bound hemoglobin in the blood. Choice A, blood pressure, is measured using a sphygmomanometer. Choice B, body temperature, is typically measured using a thermometer. Choice D, blood glucose level, is measured using a glucometer. Thus, the correct answer is C as it directly aligns with the function and purpose of a pulse oximeter.

Correct Answer: C

Rationale: The correct answer is C, Scope of practice. A scope of practice outlines the tasks nursing assistants can legally perform. It is based on state or federal regulations and ensures safe and effective care. A procedure manual (A) provides instructions for specific tasks but doesn't define legal boundaries. A cover letter (B) is a document used in job applications and is unrelated to task permissions. Option D is incomplete and irrelevant to the question.

Correct Answer: B

Rationale: The correct answer is B: They should not be worn in care facilities. Artificial nails can harbor bacteria and pose infection risks in long-term care settings. They may also interfere with proper hand hygiene practices. Choice A is incorrect because clean, short, and filed artificial nails still pose infection risks. Choice C is incorrect because wearing artificial nails only at special events does not address the overall infection risk. Choice D is incorrect as frequent hand washing alone may not eliminate the risks associated with artificial nails.

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 added to the root word "endo" to form the word "endoscopy," meaning visual examination within. Choices A, B, and C are all prefixes, not suffixes. Prefixes are word parts added to the beginning of a root word to modify its meaning. In choices A, B, and C, "broncho," "rhino," and "neuro" are all added to the root words "scopy," "plasty," and "pathy," respectively, to form new words.