Correct Answer: A

Rationale: The correct answer is A: Applying the liquid test antigen. During a scratch test to detect allergies, the nurse's role is to apply the liquid test antigen onto the skin to observe the body's reaction. This antigen contains potential allergens that may trigger a response in allergic individuals. By applying this antigen, the nurse can assess if the patient develops a raised wheal or redness at the site, indicating an allergic reaction. This step is crucial in identifying specific allergens causing the patient's symptoms. Choices B, C, and D are incorrect as determining the type of allergy, measuring the length and width of the reaction, and documenting the findings are all important steps but do not directly relate to the initial action of applying the test antigen during a scratch test.

Correct Answer: C

Rationale: The correct answer is C, Corticosteroid therapy. In multiple myeloma, corticosteroids are commonly used to help reduce inflammation, suppress the immune system, and slow the growth of cancer cells. This treatment can help manage symptoms and improve quality of life for the client. A: Bed rest is not typically prescribed for multiple myeloma unless there are specific complications requiring immobilization. B: Fluid restriction is not a common treatment for multiple myeloma unless there is a specific need to manage fluid balance. D: Calcium replacement therapy may be necessary in some cases of multiple myeloma due to bone involvement, but it is not a primary treatment option compared to corticosteroid therapy in managing the disease.

Correct Answer: D

Rationale: The correct answer is D because dysplasia refers to the alteration in the size, shape, and organization of differentiated cells. Dysplasia is an abnormal growth or development of cells that can be a precursor to cancer. It is characterized by changes in cell size, shape, and organization, which can be seen in Papanicolaou tests. Choice A is incorrect because it describes an undifferentiated tumor, not dysplasia. Choice B is incorrect as it describes hyperplasia, not dysplasia. Choice C is incorrect as it refers to metaplasia, not dysplasia. In summary, dysplasia is specifically about the abnormal changes in the appearance and organization of differentiated cells, making choice D the correct definition.

Correct Answer: C

Rationale: The correct answer is C because using an electric razor instead of a safety razor demonstrates understanding of the risk of injury associated with thrombocytopenia. This action shows practical application of the teaching to prevent bleeding. Choice A only indicates awareness but not necessarily action. Choice B shows knowledge but not necessarily application. Choice D is related to general healthcare knowledge but not directly linked to bleeding prevention in thrombocytopenia.

Correct Answer: D

Rationale: The correct answer is D because a low-carbohydrate, high-protein diet helps stabilize blood sugar levels and prevents hypoglycemic episodes. Carbohydrates cause rapid spikes and drops in blood sugar, while protein helps maintain stable levels. Avoiding fasting also helps regulate blood sugar. Choice A is incorrect as increasing saturated fat and fasting can worsen hypoglycemia. Choice B is incorrect as vitamins and iron do not directly address hypoglycemia. Choice C is incorrect as relying on sugary foods like candy bars can lead to further blood sugar imbalances.