Correct Answer: A

Rationale: The correct answer is A: INR. The INR (International Normalized Ratio) is the laboratory test used to monitor the therapeutic response of warfarin. It helps ensure that the client's clotting time is within the desired range to prevent complications such as excessive bleeding or clotting. Choice B, aPTT (Activated Partial Thromboplastin Time), is not typically used to monitor warfarin therapy but rather for assessing heparin therapy. Choice C, Platelet count, assesses the number of platelets in the blood and is not specifically used to monitor warfarin therapy. Choice D, Hemoglobin A1C, is a test used to monitor long-term blood sugar control in diabetic patients and is not relevant to monitoring warfarin therapy.

Correct Answer: A

Rationale: The correct answer is A. Administering antibiotics late must be reported as it can compromise the effectiveness of the treatment. This delay can lead to subtherapeutic levels of the antibiotic in the client's system, potentially reducing its efficacy in combating the infection. Choice B, a client vomiting shortly after taking medication, should be noted but does not necessarily require an incident report unless it is a frequent occurrence. It could indicate a possible adverse reaction or intolerance to the medication. Choice C, a client requesting a statin at a specific time, and choice D, a client asking for pain medication slightly earlier, do not involve medication errors or deviations that pose immediate risks to the client's health, so they do not require incident reports.

Correct Answer: C

Rationale: The correct intervention for a client post-bowel resection is to instruct the client to splint the incision with a pillow. This technique helps prevent dehiscence, which is the separation of wound edges, and reduces pain when coughing or moving. Splinting supports the incision site, decreasing tension on the wound. Encouraging the client to drink adequate fluids promotes hydration and aids in recovery, but a specific volume like 1,000 mL mentioned in choice A is not essential. Pain medication should be administered as needed for adequate pain control, not necessarily before every meal. Instructing the client to eat a balanced diet, including adequate protein, is crucial for wound healing and overall recovery, rather than limiting protein intake.

Correct Answer: A

Rationale: An elevated BUN level indicates possible nephrotoxicity, which is a side effect of gentamicin and should be reported. Elevated serum creatinine and WBC count are not specifically related to gentamicin therapy. Normal serum glucose levels are also within the expected range.

Correct Answer: C

Rationale: Providing high-calorie snacks is essential when caring for a client in the manic phase of bipolar disorder because they often have increased energy expenditure and may not eat adequately due to their heightened activity levels. Encouraging group activities (Choice A) may overwhelm the client further during this phase. Encouraging frequent naps (Choice B) contradicts the need to manage increased energy levels. Promoting physical activity during mealtimes (Choice D) may not be appropriate as it can distract the client from eating, which is crucial in meeting their nutritional needs.