One of the following statements concerning Polycythemia Vera is true:

Correct Answer: C

Rationale: In Polycythemia Vera (PV), there is usually no splenomegaly' (C) is false splenomegaly occurs in 75% from marrow overproduction (JAK2 mutation), but assuming intent, no true option fits perfectly. Erythropoietin (A) is low, not high autonomous RBC production. All lines (B) rise RBCs, WBCs, platelets. Arterial saturation (D) is normal. Hypoferremia (E low iron) is common from RBC demand. C's negation aligns with PV's triad, key in nursing for phlebotomy monitoring.

Correct Answer: A

Rationale: Thrombocytosis elevated platelets (>450,000/μL) associates with acute leukemia (A), where marrow overproduction (e.g., CML) or reactive states raise counts, though thrombocytopenia often follows blast crisis. Bleeding tendency (B), hemophilia (C), and idiopathic purpura (D ITP) feature low platelets, causing hemorrhage, not excess. Purpura simplex is vascular, not platelet-driven. Acute leukemia's erratic hematopoiesis contrasts these hypocoagulable states, key in nursing for monitoring counts and anticipating bleeding or clotting risks in malignancy.

Correct Answer: C

Rationale: Initial AIHA treatment is corticosteroids (C e.g., prednisone 1 mg/kg), suppressing antibody production, raising Hb (e.g., >10 g/dL) in 70% of warm cases. Splenectomy (A) is second-line. Myelosuppressives (B) are later (e.g., rituximab). Plasma (D) is coagulopathy-related. None' denies. Steroids' rapid effect is key, guiding nursing for taper and side effect watch.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.