Test Bank for Modern Blood Bank Book (Questions and Answers) by Denise M. Harmening 7th edition

Test Bank for Modern Blood Bank Book (Questions and Answers) by Denise M. Harmening 7th edition Maximum volume of blood that can be collected from a 110lb donor, including samples for processing? a. 450 mL b. 500mL c. 525mL d. 550 mL - ANSWER 525ml How often can a blood donor donate whole blood? a. every 24 hrs b. once a month c. every 8 weeks d. twice a year - ANSWER Every 8 weeks (56 days) When RBC's are stored, there is a "shift to the left". This means what? a. Hemoglobin-oxygen affinity increases, owing to an increase in 2,3-DPG b. H-O2 affinity increases, owing to a decrease in 2,3-DPG c. H-O2 affinity decreases, owing to a decrease in 2,3-DPG d. H-O2 affinity decreases, owing to an increase in 2,3- DPG - ANSWER Hemoglobin-oxygen affinity increases, owing to a decrease in 2,3-DPG The majority of platelets transfused in the U.S. are: a. whole blood derived platelets prepared by the platelet rich plasma method b. whole blood derived platelets prepared by the buffy coat method c. apheresis platelets d. prestorage-pooled platelets - ANSWER apheresis platelets Which anticoagulant preservatives provides storage time of 35 days at 1-6 degrees C for units of whole blood and prepared RBC's if an additive solution isn't added? a. ACD-A b. CP2D c. CPD d. CPDA-1 - ANSWER CPDA-1 What is the storage time and temp for platelet concentrates and apheresis platelets? a. 5 days, 1-6 degrees C b. 5 days, 24-27 C c. 5 days, 20-24 C d. 7 days, 22-24 C - ANSWER 5 days, 20-24 C RBC's can be frozen for: a. 12 months b. 1 year c. 5 years d. 10 years - ANSWER 10 years whole blood and RBC units are stored at what temp? a. 1-6 degrees C b. 20-24 C c. 37 C d. 24-27 C - ANSWER 1-6 degrees C additive solutions are approved for storage of red blood cells for how many days? a. 21 b. 42 c. 35 d. 7 - ANSWER 42 days One criterion by the FDA for approval of new preservation solutions and storage containers in an average 24 hour post-transfusion RBC survival of more than: a. 50% b. 60% c. 65% d. 75% - ANSWER 75% What is the lowest allowable pH for a platelet component at outdate? a. 6 b. 5.9 c. 6.8 d. 6.2 - ANSWER 6.2 What occurs during storage of RBC's? a. pH decreases b. 2,3-DPG increases c. ATP increases d. plasma K+ decreases - ANSWER pH decreases Which is approved for bacterial detection specific to extending the expiration of apheresed platelets to 7 days? a. BacT/ALERT b. eBDS c. Gram stain d. Pan Genera Detection (PGD) test - ANSWER PGD test Most common cause of bacterial contamination in platelet products?