QUESTIONS AND ANSWERS FOR AAB MT IMMUNOHEMATOLOGY LATEST EDITION 2023/2024

QUESTIONS AND ANSWERS FOR AAB MT IMMUNOHEMATOLOGY LATEST EDITION 2023/2024 All of the following donors would be permanently deferred EXCEPT which one? - CORECT ANSWER-38-year-old male who received rabies vaccine after a dog bite 3 months ago All of the following donors would be permanently deferred: - CORECT ANSWER-75- year-old male who had acute hepatitis 20 years ago following surgery, 19-y/o first-time donor who received human growth hormone 12 years ago, and a 24-y/o donor with a history of a positive test for Hepatitis C from another blood center. What is the interval between blood donations? - CORECT ANSWER-8 weeks The oral temperature of a donor must not exceed which value? - CORECT ANSWER37.5 degrees C What is the minimum acceptable hemoglobin for blood donors? - CORECT ANSWER12.5 g/dL for allogeneic donors What is the lowest acceptable hematocrit for allogeneic donors? - CORECT ANSWER38% What donor meets the requirement for age, pulse, weight, and blood pressure? - CORECT ANSWER-Age: 32, Pulse: 60, Weight (lb) 185, BP: 110/70 How long must a pregnant woman be deferred? - CORECT ANSWER-6 weeks postpartum There is a 12-month deferment for each of the following donors: - CORECT ANSWERDonor received a blood transfusion, donor received a tattoo and body piercing, donor had sex with a person with hepatitis. There is a 12-month deferment for each of the following donors EXCEPT: - CORECT ANSWER-Donor received the hepatitis B vaccine How long must a prospective donor with a history of malaria be deferred? - CORECT ANSWER-3 years after cessation of treatment A lab tech who has a positive tuberculin skin test wants to donate blood. If he/she meets all the other criteria, how long is the deferral? - CORECT ANSWER-No deferral as long as there is no other abnormality All of the following are causes of permanent donor deferral: - CORECT ANSWERConfirmed HIV positive, family history of Creutzfedt-Jakob disease, and intravenous drug user All of the following are causes of permanent donor deferral EXCEPT: - CORECT ANSWER-Donor received the hepatitis B vaccine Current testing on all donor blood must include testing for which of the following? - CORECT ANSWER-Serological test for syphilis Which one of the following tests is not required by AABB and is therefore optional during donor blood testing? - CORECT ANSWER-anti-HBc What is a commonly used screening method for the detection of HIV-1 antibodies? - CORECT ANSWER-Enzyme-linked immunosorbent assays (ELISA) Currently required viral hepatitis marker tests include all of the following: - CORECT ANSWER-Anti-HCV, Anti-HBc, and HBsAg Currently required viral hepatitis marker tests include all of the following EXCEPT: - CORECT ANSWER-anti-HAV When color coding is used for donor blood labels, what color is group A? - CORECT ANSWER-Yellow Which infectious agent is least likely to be transmitted by a blood infection? - CORECT ANSWER-HAV In the very early acute phase of hepatitis, which one of the following tests would be indicative of onset of a viremic state? - CORECT ANSWER-HBsAg During the "window period," what is the only marker of HBV infection? - CORECT ANSWER-Anti-HBc What is the minimum length of time that the patient's serum must remain positive for HBsAg before the individual is referred to as a chronic carrier? - CORECT ANSWER-6 months Which viral agent causes the majority of cases of transfusion-associated hepatitis? - CORECT ANSWER-HCV All of the following are required viral marker testing for the human immunodeficiency virus EXCEPT which one? - CORECT ANSWER-HIV-1 p24 antigen Which virus can be deadly to immunocompromised patients or premature infants? - CORECT ANSWER-CMV All of the following organisms have been implicated in bacterial contamination of donor blood products EXCEPT which one? - CORECT ANSWER-Escherichia coli All of the following organisms have been implicated in bacterial contamination of donor blood products: - CORECT ANSWER-Y. enterocolitica, C. freundii, and Pseudomonas putida Which one of the following parasites has NOT been transmitted by blood transfusion? - CORECT ANSWER-Naegleria Which parasites have been transmitted by blood transfusion? - CORECT ANSWERBabesia, Plasmodium, and Trypanosoma What is the acceptable temperature range for a blood bank refrigerator? - CORECT ANSWER-1-6 degrees C According to FDA regulations, if blood is to be transported, then what temperature must be maintained during transportation? - CORECT ANSWER-1-10 degrees C What is the expiration date of RBCs preserved with CPDA-1? - CORECT ANSWER-35 days What is the expiration date of RBCs preserved with ADSOL? - CORECT ANSWER-42 days What is the shelf life of cryoprecipitated antihemolytic factor when stored at -18 degrees C or lower? - CORECT ANSWER-1 year What is the shelf life of FFP that is stored at -18 degrees C or lower? - CORECT ANSWER-1 year What is the optimum temperature for thawing FFP? - CORECT ANSWER-30-37 degrees C What is the shelf life of platelet concentrates? - CORECT ANSWER-5 days at 20-24 degrees C with constant agitation If the hermetic seal on a unit of packed RBCs has been broken, how soon must the product be used if stored in the blood bank refrigerator? - CORECT ANSWER-24 hours Which biochemical change does NOT occur in stored blood? - CORECT ANSWERPlasma K+ decreases Which biochemical changes occur in stored blood? - CORECT ANSWER-Plasma pH decreases, plasma Na+ decreases, and 2,3-DPG decreases Which one of the following is NOT a labeling requirement of specimens for crossmatching? - CORECT ANSWER-Ordering physician The following are labeling requirements of specimens for crossmatching? - CORECT ANSWER-Collection date, patient's name, hospital number All of the following statements concerning autologous transfusions are true EXCEPT which one? - CORECT ANSWER-There are no donor blood requirements for them All of the following statements concerning autologous transfusions are true: - CORECT ANSWER-They prevent alloimmunization, they are the safest possible transfusions, and they eliminate the risk of transfusion-transmitted infections. In which autologous procedure is blood drawn and stored before the anticipated elective surgery? - CORECT ANSWER-Preoperative collection