Thalassemia minor typically demonstrates an increase in:

Correct Answer: B

Rationale: Thalassemia minor mild β-thalassemia raises hemoglobin A₂ (B) (e.g., 3.5-7%) from compensatory δ-chain production, detected via electrophoresis. Hemoglobin A (A) dominates but is reduced. HbS (C) is sickle cell, unrelated. HbF (D) rises in severe forms, not minor. All' overstates. A₂ elevation reflects β-chain defect, key in nursing for genetic counseling and distinguishing from iron deficiency.

Correct Answer: B

Rationale: Vitamin K deficiency causes bleeding manifestations (B) lacking K impairs factors II, VII, IX, X synthesis, prolonging PT (e.g., >15s), causing bruising, epistaxis. Spoon nails (A), alopecia (C), fissured tongue (D) tie to iron or B12. Jaundice fits liver failure, not K alone. Bleeding is key, guiding nursing for vitamin K injection and monitoring INR.

Correct Answer: D

Rationale: Autoimmune hemolytic anemia (AIHA) all true : positive Coombs (A antibody-coated RBCs), splenomegaly (B sequestration), jaundice (C hemolysis, bilirubin >2 mg/dL), chills/fever (D immune reaction). Warm (IgG) or cold (IgM) AIHA drives RBC destruction, key in nursing for steroids, splenectomy prep, and monitoring bilirubin.

Correct Answer: C

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

Correct Answer: D

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