A clinic nurse is working with a patient who has a long-standing diagnosis of polycythemia vera. How can the nurse best gauge the course of the patient's disease?

Correct Answer: D

Rationale: The course of polycythemia vera can be best ascertained by monitoring the patient's hematocrit, which should remain below 45%. Hematocrit levels are a key indicator in assessing the progression of the disease. Choices A, B, and C are not the most appropriate methods for gauging the course of polycythemia vera. Monitoring the color of the patient's palms and face, or their response to erythropoietin injections, may not provide an accurate reflection of the disease's progression. Similarly, while erythrocyte sedimentation rate can be affected in polycythemia vera, it is not the primary marker for monitoring the disease's course.

Correct Answer: A

Rationale: The correct answer is A: Cardiac function. Imatinib can cause fluid retention and heart failure, so cardiac function should be closely monitored. Renal function (choice B) is not typically affected by imatinib. Liver function (choice C) is not the primary concern with this medication. Pulmonary function (choice D) is not directly impacted by imatinib therapy.

Correct Answer: D

Rationale: The correct answer is D, Peripheral neuropathy. This can be a serious and dose-limiting side effect of chemotherapy for Hodgkin lymphoma. Peripheral neuropathy can cause tingling, numbness, and pain in the hands and feet due to nerve damage. While nausea and vomiting, alopecia, and fatigue are common side effects of chemotherapy, they are not typically as concerning or dose-limiting as peripheral neuropathy in the context of Hodgkin lymphoma treatment.

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: C

Rationale: Monitoring hemoglobin and hematocrit is essential to assess the effectiveness of ruxolitinib in treating myelofibrosis. Ruxolitinib works by inhibiting JAK1 and JAK2, which are involved in the signaling pathways that regulate blood cell production. Therefore, monitoring hemoglobin and hematocrit levels can provide valuable information on how well the drug is managing the disease. Blood pressure, white blood cell count, and spleen size are not direct indicators of the treatment's effectiveness in myelofibrosis.