A client with human immunodeficiency virus (HIV) undergoes intradermal anergy testing using Candida and mumps antigen. During the 3 days following the tests, there is no induration or evidence of reaction at the intradermal injection sites. The most accurate conclusion the nurse can make is:

Correct Answer: C

Rationale: The correct answer is C because a lack of response to intradermal anergy testing suggests an inability to mount a normal delayed-type hypersensitivity response, indicating immunodeficiency. This could be due to conditions such as HIV, which impairs cell-mediated immunity. Choice A is incorrect because absence of reaction does not necessarily indicate lack of previous exposure to antigens. Choice B is incorrect as the absence of response doesn't confirm the presence of antibodies. Choice D is incorrect because anergy testing is not used to assess allergy, but rather to evaluate cell-mediated immunity.

Correct Answer: B

Rationale: The correct answer is B: PTT (Partial Thromboplastin Time) because it specifically measures the effectiveness of heparin therapy by assessing the intrinsic pathway of the coagulation cascade. A prolonged PTT indicates that heparin is achieving the desired anticoagulant effect. A: INR (International Normalized Ratio) is used to monitor warfarin therapy, not heparin. C: PT (Prothrombin Time) is also used to monitor warfarin therapy. D: Bleeding time is not typically used to monitor heparin therapy and is more focused on platelet function rather than coagulation factors.

Correct Answer: A

Rationale: Step-by-step rationale for why choice A is correct: 1. Hypercalcemia can lead to dehydration due to increased urine output. 2. Encouraging 3 to 4 L of fluid daily helps prevent dehydration and promote renal excretion of excess calcium. 3. Adequate hydration reduces the risk of kidney stones and other complications associated with hypercalcemia. Summary of why other choices are incorrect: - Choice B (bed rest) does not directly address hypercalcemia complications. - Choice C (cough and deep breathe) is unrelated to managing hypercalcemia. - Choice D (apply heat to painful areas) does not address the underlying cause of hypercalcemia or its complications.

Correct Answer: A

Rationale: The correct answer is A: Potential for infection. The decreased WBC count indicates reduced ability to fight off infections, making this the priority nursing diagnosis. Normal RBC count rules out anemia-related complications. Decreased HCT and Hgb indicate possible anemia but do not directly relate to infection risk. Choices B and C are not as critical as the potential for infection due to the significant impact on the individual's health and well-being. Choice D, fluid volume excess, is not directly related to the blood test results provided.

Correct Answer: A

Rationale: Correct Answer: A Rationale: 1. Lymphangitis is an inflammation of lymphatic vessels. 2. If the affected area appears to enlarge, it indicates possible worsening or spreading of the infection. 3. Nurse should notify the physician for further evaluation and treatment. 4. Red streaks extending up the arm or leg (B) are common signs of lymphangitis, not necessarily requiring immediate physician notification. 5. Additional lymph nodes becoming (C) is a normal response to infection and may not warrant immediate physician notification. 6. Liver and spleen enlargement (D) are not directly related to lymphangitis and do not require immediate notification.