Treatment Protocols & Procedures Flashcards
7 cards from real CLT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Treatment Protocols & Procedures flashcards as text
Which procedure is used to monitor adequacy of heparin therapy in the operating room during cardiopulmonary bypass?
Answer: Activated clotting time (ACT)
The activated clotting time (ACT) is the point-of-care test used to monitor high-dose heparin therapy during cardiopulmonary bypass because aPTT is not accurate at such high heparin levels.
A patient with sickle cell disease is in vaso-occlusive crisis. Which treatment intervention is specifically aimed at preventing future crises?
Answer: Hydroxyurea therapy
Hydroxyurea increases fetal hemoglobin (HbF) production, which dilutes HbS and reduces the frequency of vaso-occlusive crises.
Which iron study pattern is consistent with anemia of chronic disease (inflammation)?
Answer: Low serum iron, high ferritin, low TIBC
Anemia of chronic disease shows low serum iron (sequestered in macrophages) but high ferritin (acute phase reactant) and low TIBC, distinguishing it from iron deficiency.
A patient undergoing chemotherapy develops a platelet count of 8,000/μL. Under which clinical condition would platelet transfusion be MOST indicated?
Answer: All of the above
Platelet transfusion is indicated for counts below 10,000/μL prophylactically, below 10,000–20,000/μL with active bleeding, and below 50,000/μL before invasive procedures.
Which type of specimen handling error causes falsely elevated serum potassium results?
Answer: Prolonged storage at room temperature causing hemolysis
Hemolysis from prolonged storage at room temperature releases intracellular potassium into the serum, causing pseudohyperkalemia.
In a patient with suspected sepsis, which blood culture protocol maximizes detection sensitivity?
Answer: Two sets (aerobic + anaerobic) from two venipuncture sites before antibiotics
Two sets from separate venipuncture sites before antibiotics optimizes sensitivity for bacteremia detection and helps distinguish contamination from true infection.
A patient with chronic liver disease has a prolonged PT but normal aPTT. Which factor deficiency MOST likely explains this isolated finding?
Answer: Factor VII deficiency
Factor VII has the shortest half-life and is the only extrinsic pathway factor; its deficiency or liver synthesis impairment selectively prolongs PT without affecting aPTT.