When administering oxygen to a client, under which of the ff situations should the nurse discontinue the administration and notify the physician?

Correct Answer: C

Rationale: The correct answer is C. When the client is in a state of respiratory arrest, immediate medical intervention is required. Discontinuing oxygen administration and notifying the physician is crucial to address the life-threatening situation. A: Improving color is a positive sign. B: Decreased consciousness may indicate a need for further assessment but does not require immediate discontinuation of oxygen. D: Inability to use the diaphragm may require intervention but does not indicate an immediate threat as respiratory arrest does.

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: A

Rationale: The correct answer is A. Transporting specimens of body fluid in leakproof containers reduces the risk of exposure to HIV/AIDS. This precaution ensures that any potentially infectious material is securely contained. Choice B is incorrect as fusion inhibitors are not prescribed for reducing occupational risks. Choice C is incorrect as it does not directly address reducing occupational risks related to HIV/AIDS. Choice D is incorrect as it is essential for a nurse to clean the client's room, but with proper precautions in place to prevent exposure to bodily fluids.

Correct Answer: C

Rationale: The correct answer is C: Drop in blood pressure and rise in heart rate. After a splenectomy, the client is at risk for orthostatic hypotension due to decreased blood volume. A drop in blood pressure and a compensatory rise in heart rate are common orthostatic changes. This occurs because the body tries to maintain perfusion to vital organs. A rise in blood pressure and heart rate (Choice A) would not align with orthostatic changes. A rise in blood pressure and drop in heart rate (Choice B) is contradictory to the body's compensatory response to maintain perfusion. Therefore, the most supportive vital sign values for abnormal orthostatic changes in this client would be a drop in blood pressure and a rise in heart rate.

Correct Answer: B

Rationale: The correct answer is B because the assessment findings of pericarditis, photosensitivity, polyarthralgia, and painful mucous membrane ulcers are classic manifestations of systemic lupus erythematosus (SLE). Pericarditis can present as chest pain aggravated by deep breathing or lying flat, photosensitivity refers to skin rashes triggered by sunlight exposure, polyarthralgia involves joint pain in multiple joints, and painful mucous membrane ulcers are common in the mouth or nose. These findings align with the diagnostic criteria for SLE. Choices A, C, and D are incorrect because they do not align with the typical presentation of SLE. Choice A includes facial erythema which is a common symptom, but the presence of profuse proteinuria, pleuritis, fever, and weight loss are not specific to SLE. Choices C and D include symptoms like weight gain, hypothermia, and edema which are not characteristic of SLE. In summary