ATI RN
Hematology Final Exam Questions Pdf Questions
Question 1 of 5
The main reason behind gamma irradiation of the blood products is to prevent
Correct Answer: C
Rationale: Gamma irradiation (C) inactivates lymphocytes in blood products, preventing GVHD in immunocompromised recipients, unlike bacterial (A), viral (B), allergic (D), or TRALI (E) risks.
Question 2 of 5
Vitamin K-dependent clotting factors include all the following EXCEPT
Correct Answer: A
Rationale: Vitamin K-dependent factors are II (B), VII (C), IX (D), and protein S (E). Factor I (A, fibrinogen) is not vitamin K-dependent.
Question 3 of 5
Lupus anticoagulants usually affect the following laboratory test
Correct Answer: B
Rationale: Lupus anticoagulants prolong PTT (B) by interfering with phospholipid-dependent clotting, not BT (A), PT (C), TT (D), or clot solubility (E).
Question 4 of 5
You are evaluating a 5-year-old male child with multiple ecchymoses distributed all over the extremities and trunk; examination reveal a palpable spleen $3 \mathrm{~cm}$ below the left costal margin. Lab findings include: hemoglobin, 11.3 g/dL; white blood cell count, 8700/mm3; platelets count, 21000/mm3. Of the following, the most proper NEXT step is
Correct Answer: D
Rationale: Thrombocytopenia (21,000/mm3) with splenomegaly suggests hypersplenism or marrow disorder. Bone marrow study (E) distinguishes production vs. sequestration, more definitive than BT (A), coagulation (B), aggregation (C), or US (D) initially.
Question 5 of 5
Microthrombocytes are MOST likely to be seen in
Correct Answer: C
Rationale: WAS (C) features small (micro) platelets due to cytoskeletal defects, unlike ITP (A, large), Bernard-Soulier (B, giant), Glanzmann’s (D), or type 2B vWD (E).