Why does working with oxygen require special safety precautions?

Correct Answer: B

Rationale: The correct answer is B: Oxygen is a dangerous fire hazard. Oxygen supports combustion, making it highly flammable and can lead to fires or explosions in the presence of a spark or flame. Special safety precautions are necessary to prevent accidents. Incorrect choices: A: Oxygen is not primarily used as a medication, and its cost is not the reason for special safety precautions. C: Oxygen levels do not need constant adjustment for safety reasons, but rather for medical or environmental purposes. D: While oxygen equipment should be handled carefully, its fragility is not the main reason for special safety precautions.

Correct Answer: D

Rationale: The correct answer is D. Dirty linen should be removed by rolling it away from the nursing assistant to prevent the spread of contaminants. Rolling helps contain any potential pathogens within the linen. Choice A is incorrect as linen should be carried away from the body to prevent contamination. Choice B is incorrect as shaking can spread germs. Choice C is incorrect as linen should not be transferred between rooms to prevent cross-contamination.

Correct Answer: A

Rationale: The correct answer is A because asking for help ensures safety for both the resident and the nursing assistant. It demonstrates recognition of limitations and promotes teamwork in providing care. Choice B is important but does not directly address safety. Choice C is incorrect as the water temperature should be comfortable, not too cold. Choice D is highly unsafe and neglectful, as residents should never be left alone during bathing for their safety.

Correct Answer: B

Rationale: The correct answer is B: 60 to 100 beats per minute. This range is considered normal for adults because it reflects a healthy heart rate that can vary based on factors like age, fitness level, and overall health. A pulse rate below 60 may indicate bradycardia, while a rate above 100 may indicate tachycardia. Choices A, C, and D are incorrect because they fall outside the typical normal pulse rate range for adults, which can lead to potential health concerns.

Correct Answer: D

Rationale: The correct answer is D: Vegan diet. A vegan diet consists of only plant-based foods, excluding all animal products. This includes fruits, vegetables, grains, nuts, and seeds. The term "vegan" specifically denotes the exclusion of all animal-derived ingredients. Explanation: A: Lacto-ovo vegetarian diet includes dairy and eggs along with plant-based foods. B: Lacto-vegetarian diet includes dairy products along with plant-based foods. C: Ovo-vegetarian diet includes eggs along with plant-based foods. In summary, the vegan diet is the only option that exclusively includes plant-based foods without any animal products.