ASCP Blood bank Questions and Answers 100% Pass

ASCP Blood bank Questions and Answers 100% Pass The minimum hemoglobin concentration in a finger stick from a male blood donor is - Answers 12.5 g/dL- all donors no matter the sex A cause for permanent deferral of blood donation is - Answers History of jaundice of uncertain cause- could be a from HBV or HCV and infection with either is a cause of indefinite deferral Which of the following prospective donors would be accepted for donation - Answers A college student who's temperature is 99.2F and states that he feels well, but is nervous about donating- temp cannot be over 99.5F Which one of the following constitutes permanent rejection status of a donor - Answers A confirmed positive HBsAg 10 years previously- a positive HBsAg at any time is an indefinite deferral According to AABB standards, which of the following donors may be accepted as a blood donor - Answers Spontaneous abortion at 2 months of pregnancy, 3 months previously- as long as she has not been pregnant in the previous 6 weeks Below are the results of the history obtained from a prospective female blood donor: Age 16 Temp 99.0F or 37.2C Hct 36% History tetanus toxoid immunization 1 week previously How many of the above results excludes this donor from giving blood for a routine transfusion? - Answers 1-Hct must be > 38%, temp must be <99.5F, age can be 16 unless the law states otherwise, BP <180/100, pulse must be 50-100 unless an athlete, toxoids and vaccines from synthetic or killed sources have no deferral For apheresis donors who donate platelets more frequently than every 4 weeks, a platelet count must be performed prior to the procedure and be at least - Answers 150 x 10^3/ uL (for frequent repeat donors)- a platelet count is not required prior to the first donation or if the interval between donations is at least 4 weeks Prior to blood donation, the intended venipuncture site must be cleaned with a scrub solution containing - Answers PVP iodine complex- if the patient is allergic to iodine they can use a preparation of 2% chlorohexidine and 70% isopropyl alcohol All donor testing must include - Answers Serological test for syphilis- First mandated donor screening test for infectious disease During the preparation of platelet concentrates from whole blood, the blood should be - Answers Cooled towards 20-24C- platelets are prepared and stored at this temp for optimum function The most common cause of post-trasfusion hepatitis can be detected in donors by testing for - Answers HBsAg- the most common post-transfusion hepatitis is HBV. HBsAg is required for detection of acute or chronic HBV The western blot is a confirmatory test for the presence of - Answers anti-HIV 1 The test that is currently used to detect donors who are infected with the AIDS virus is - Answers anti-HIV 1 & 2 A commonly used screening method for anti-HIV-1 detection is - Answers ELISA Rejuvenation of a unit of RBC is a method used to - Answers restore 2,3-DPG and ATP to normal levels A unit of packed cells is split into 2 aliquots under closed sterile conditions at 8 AM. The expiration time for each aliquot is now - Answers The original date of the unsplit unit- sterile docking devices allow entry into donor units without affecting the expiration date of the product A unit of RBC expiring in 35 days is split into 5 small aliquots using a sterile pediatric quad set and a sterile connecting device. Each aliquot must be labeled as expiring in - Answers 35 days- Sterile docking devices allow entry into donor units without affecting the expiration date of the product When platelets are stored on a rotator set on an open bench top, the ambient air temperature must be recorded - Answers Every 4 hours- if the storage devices do not have an automated temperature recording Which of the following is the correct storage temp for the component listed? Cryo AHF 4C FFP -20C RBC, frozen -40 Platelets 37C - Answers FFP @ -20 FFP is stored at -18C or below for 12 months A unit of RBC is issued at 9AM. at 9:10AM the unit is returned to the blood bank. The container has NOT been entered, but the unit has NOT been refrigerated during this time span. The best course of action for the technologist is to - Answers Record the return and place the unit back into inventory 1. it has not been entered. 2. at least1 sealed segment is attached to the container 3. visible inspection of the unit is satisfactory and documented 4. the unit the unit has been maintained at the appropriate temperature * refrigerated units maintained <10C can be left out for up to 30mniutes The optimum storage temperature for RBC, frozen is - Answers -80C RBC frozen with 40% glycerol are stored at -65C or lower The optimum temp for storage of RBC is - Answers 4C- optimal temp is 1-6C If the seal is entered on a unit of RBC stored at 1-6C, What is the maximum allowable storage period if hours - Answers 24 hours- for an open system The optimum storage temp for cryo AHF is - Answers -20C cryo is stored at -18 or lower Cry must be transfused within what period of time following thawing - Answers 4 hours Platelets prepared in a polylefin type container, stored at 22-24C in 50 mL of plasma, and gently agitated can be used for up to - Answers 5 days Platelets are prepared by the PRP method The optimum storage temp for platelets is - Answers 22C- the range is 20-24C According to the AABB standards, FFP must be infused within what period of time following thawing - Answers 24 hours Cryo AHF, if maintained in the frozen state at -18C or below, has a shelf life of - Answers 12 months Once thawed, FFP must be transfused within - Answers 24 hours An important determinant of platelet viability following storage is - Answers plasma pH In the liquid state, plasma must be stored at - Answers 1-6C