Correct Answer: B

Rationale: The patient's signs of ecchymoses and petechiae are suggestive of thrombocytopenia, which is a common complication of leukemia. Thrombocytopenia is a condition characterized by a low platelet count, leading to abnormal bleeding. Checking the patient's most recent platelet level is crucial to assess the severity of thrombocytopenia and guide further interventions. Initiating measures to prevent venous thromboembolism (VTE) (Choice A) is not directly related to the patient's current signs. Placing the patient on protective isolation (Choice C) is not necessary for ecchymoses and petechiae. Ambulating the patient (Choice D) is not appropriate without addressing the underlying cause of abnormal bleeding.

Correct Answer: A

Rationale: The correct answer is A: Infection. Patients with chronic lymphocytic leukemia (CLL) are at a significant risk of infection due to their compromised immune system. Emphasizing the importance of infection prevention and prompt treatment is crucial in the care of these patients. Choice B, Hemorrhage, is less common in CLL compared to other types of leukemia. Choice C, Fatigue, is a common symptom but not a complication that poses immediate risks. Choice D, Splenomegaly, is a common finding in CLL but not the most critical complication to emphasize regarding patient education.

Correct Answer: A

Rationale: The correct answer is A because enemas can cause injury to a thrombocytopenic client due to the risk of bleeding. Choices B, C, and D are correct precautions for a client with thrombocytopenia. Using an electric shaver reduces the risk of cuts that could lead to bleeding. Eating soft, cool, or warm food helps prevent injuries to the oral mucosa. Avoiding activities like sports that carry a risk of injury is also advisable.

Correct Answer: C

Rationale: For patients experiencing difficulties with oral intake, the provision of small, easily chewed meals may be beneficial. Option A (TPN) and B (PEG tube placement) are more invasive interventions and should be considered if non-oral routes are necessary. Option D is not appropriate as the primary responsibility for a patient's nutrition should lie with healthcare professionals to ensure proper management and monitoring.

Correct Answer: D

Rationale: The correct answer is D because the statement 'Chemotherapy is effective in killing all cancer cells' is incorrect. Chemotherapy does not kill all cancer cells and is not the same as radiation therapy. Chemotherapy targets rapidly dividing cells, including cancer cells, but it may not kill every single cancer cell. It is important for the student nurse to understand and communicate this distinction to the patient. Choices A, B, and C provide accurate information about teletherapy, brachytherapy, and chemotherapy, respectively, and do not require additional teaching.