CCRN Hematology and Immunology 2

Question 1

A patient with disseminated intravascular coagulation (DIC) would be expected to have which laboratory profile?

Accepted Answer

Low platelets, high D-dimer, prolonged PT/PTT, low fibrinogen

Answer

High platelets, low D-dimer, normal PT/PTT, high fibrinogen

Answer

Normal platelets, low D-dimer, short PT/PTT, high fibrinogen

Answer

Low platelets, low D-dimer, normal PT, high fibrinogen

Question 2

Which transfusion reaction is most life-threatening and typically results from ABO incompatibility?

Accepted Answer

Acute hemolytic reaction

Answer

Febrile non-hemolytic reaction

Answer

Mild allergic (urticarial) reaction

Answer

Delayed hemolytic reaction

Question 3

A patient receiving heparin develops a platelet count drop of more than 50% on day 6. What condition should be suspected?

Accepted Answer

Heparin-induced thrombocytopenia (HIT)

Answer

Idiopathic thrombocytopenic purpura

Answer

Aplastic anemia

Answer

Vitamin K deficiency

Question 4

Which finding best indicates a neutropenic patient is at highest infection risk?

Accepted Answer

Absolute neutrophil count below 500/mm3

Answer

White blood cell count of 8,000/mm3

Answer

Hemoglobin of 10 g/dL

Answer

Platelet count of 90,000/mm3

Question 5

What is the priority intervention for a neutropenic patient who develops a fever of 38.5C?

Accepted Answer

Obtain cultures and start broad-spectrum antibiotics promptly

Answer

Administer acetaminophen and recheck in 4 hours

Answer

Hold all antibiotics until culture results return

Answer

Place the patient in droplet isolation only

Question 6

Which clotting factor pathway does the PTT (partial thromboplastin time) primarily evaluate?

Accepted Answer

Intrinsic pathway

Answer

Extrinsic pathway

Answer

Fibrinolytic pathway

Answer

Common platelet pathway

Question 7

A patient with sickle cell disease in vaso-occlusive crisis requires which priority interventions?

Accepted Answer

Oxygen, hydration, and pain management

Answer

Fluid restriction and cold compresses

Answer

Diuretics and platelet transfusion

Answer

Vitamin K and bed rest only