ATI RN
Hematology Exam Questions Questions
Question 1 of 5
In the patient described in Questions 10 and 11, when the hemoglobin and hematocrit return to normal, which should be done?
Correct Answer: C
Rationale: Continue iron for 4-8 weeks (C) to replenish stores after correcting iron deficiency anemia.
Question 2 of 5
A 10-year-old undergoes total splenectomy because of trauma. The best statement about the risk of postsplenectomy infection is that
Correct Answer: D
Rationale: Splenectomy increases lifelong infection risk (E), especially from encapsulated organisms like pneumococci, not reliably prevented by splenosis (C) or vaccines (D) alone.
Question 3 of 5
The definitive diagnostic test for the condition described in Question 19 is
Correct Answer: D
Rationale: Osmotic fragility test (E) confirms hereditary spherocytosis by showing RBC fragility.
Question 4 of 5
A 3.2-kg, 40-week's-gestational age male is born by spontaneous vaginal delivery to a 20-year-old white female. Past maternal medical problems reveal a history of easy bruising that required splenectomy at 18 years of age. Current coagulation studies of the mother include a prothrombin time of 12 seconds, a partial thromboplastin time of 25 seconds, fibrinogen of 300 mg/dL, and a platelet count of 175,000. At 3 hours of age, the infant is noted to have multiple petechiae and a platelet count of 15,000. The most likely diagnosis is
Correct Answer: C
Rationale: Maternal ITP (C) with splenectomy history can cause neonatal thrombocytopenia via passive antibody transfer.
Question 5 of 5
Indications for platelet transfusions in infants less than 4 months of age include all of the following platelet counts and clinical situations EXCEPT
Correct Answer: C
Rationale: Stable infants with <20 × 10â¹/L (C) don’t routinely need transfusion unless bleeding or unstable.