Correct Answer: A

Rationale: The correct answer is A: Bowel sounds. Checking for bowel sounds is crucial before administering any diet to ensure the gastrointestinal tract is functioning properly following surgery. This assessment helps prevent complications such as paralytic ileus. Choices B, C, and D are not the priority in this situation. While the ability to ambulate, incision appearance, and urine specific gravity are important assessments, ensuring bowel function takes precedence in this postoperative scenario.

Correct Answer: A

Rationale: The correct answer is A. Secondary MDS can occur at any age and results from prior toxic exposure to chemicals, including chemotherapeutic medications. Asking about exposure to toxic chemicals in previous jobs directly addresses the potential etiology of this patient's health problem. Choices B, C, and D are not as directly related to the etiology of secondary MDS. Recurrent infections (Choice B) are not a known cause of MDS. Family history (Choice C) is more pertinent to primary MDS, which has a genetic component, while sun exposure (Choice D) is not associated with the etiology of MDS.

Correct Answer: C

Rationale: The correct answer is C: Muscle weakness. In patients with multiple myeloma who have developed hypercalcemia, monitoring for muscle weakness is crucial. Hypercalcemia can lead to muscle weakness due to its effects on neuromuscular function. Choice A, increased heart rate, is more commonly associated with conditions like dehydration or anxiety rather than hypercalcemia. Choice B, decreased urine output, is commonly seen in conditions leading to acute kidney injury rather than hypercalcemia. Choice D, hypertension, is not a typical symptom of hypercalcemia and is more commonly associated with other conditions like uncontrolled high blood pressure.

Correct Answer: D

Rationale: The correct answer is D, 'Mouth sores.' Mouth sores (stomatitis) are a common and potentially serious side effect of chemotherapy. They can lead to difficulty eating, increased risk of infection, and overall decreased quality of life for the client. While alopecia, fatigue, and nausea/vomiting are also common side effects of chemotherapy, they are generally manageable and do not pose the same level of immediate concern as the development of mouth sores in a client undergoing chemotherapy.

Correct Answer: C

Rationale: The highest priority action to reduce the risk of bleeding in a client with thrombocytopenia is to avoid invasive procedures unless absolutely necessary. Thrombocytopenia is a condition characterized by a low platelet count, which impairs the blood's ability to clot properly. By avoiding invasive procedures, the nurse minimizes the potential for bleeding episodes that could be challenging to control due to the low platelet count. Using an electric razor instead of a straight razor (Choice A) is a good practice to prevent cuts, but it is not as critical as avoiding invasive procedures in this scenario. Applying pressure to bleeding sites (Choice B) and monitoring for signs of internal bleeding (Choice D) are important interventions but are secondary to the priority of preventing bleeding by avoiding invasive procedures.