Sternal tenderness is a symptom of:

Correct Answer: C

Rationale: Sternal tenderness marks acute leukemia (C) marrow infiltration (e.g., blasts >20%) causes bone pain, palpable on percussion. Rheumatoid arthritis (A) spares marrow. Mononucleosis (B) lacks bone involvement. Endocarditis (D) affects heart. Leukemia's marrow crowding is key, guiding nursing for marrow aspiration and chemotherapy prep.

Correct Answer: D

Rationale: Multiple myeloma features nitrogen retention (A renal failure), hypercalcemia (C bone lysis), proteinuria (D Bence-Jones), but not glucosuria glucose isn't excreted unless diabetic, unrelated to plasma cell dyscrasia. Hypoproteinemia (B) is rare hypergammaglobulinemia dominates. Glucosuria's absence is key, guiding nursing for renal function and calcium monitoring.

Correct Answer: D

Rationale: Hemosiderin (D) iron-storing pigment accumulates in tissues (e.g., liver, spleen) from RBC breakdown, staining blue on Prussian blue. Urobilinogen (A), bilirubin (B), hematoidin (C) heme metabolites lack iron, excreted or reabsorbed. All' overstates. Hemosiderin's iron link is key, guiding nursing for overload monitoring (e.g., hemochromatosis).

Correct Answer: D

Rationale: Anemia of hepatic disease blood loss, folate deficiency, alcohol (D) cause it (e.g., varices, poor diet, toxicity), yielding normocytic/macrocytic anemia. Iron block (A) is chronic. EPO (B) is renal. Normocytic (C) is effect. Multifactorial etiology is key, guiding nursing for liver function and folate.

Correct Answer: C

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