MMSC 438 - Exam 3 Complete Set Q&A

MMSC 438 - Exam 3 Complete Set Q&A 1. When drawing blood cultures for a 5-year-old, the correct blood volume (according to ASM) is _______. A. Based upon the child's weight. B. 1 mL for each year of life of the child. C. 10 to 20 mL of blood per bottle to assure positive rate of 99%. D.Any volume is sufficient since blood is more concentrated in children. A. Based upon the child's weight. 2. A patient presents with acute onset of signs and symptoms consistent with endocarditis. The patient has a history of IV drug abuse. An echocardiogram demonstrates vegetations on the mitral valve. The most likely pathogen is: A. Cryptococcus neoformans B.Escherichia coli C.Treponema pallidum D. Staphylococcus aureus D. Staphylococcus aureus 3. CPD/CP2D has an expiration of how many days? - ANSWER 21 days 4. CPDA-1 has an expiration of how many days? - ANSWER 35 days 5. AS1,3,5,7 has an expiration of how many days? - ANSWER 42 days What products are stored at /= -18ºC and have a shelf life of 1 year? (4 products) - ANSWER fresh FROZEN plasma, FROZEN plasma, FROZEN cryo-reduced plasma, FROZEN cryo 6. What is the storage temp of whole blood? - ANSWER 1-6ºC 7. What is the storage temp of RBCs? - ANSWER 1-6ºC for all types of RBCs (Washed, DRBCs, split, baby aliquots) EXCEPT FRBCs: -65ºC 8. What product is stored at -65ºC and has a shelf life of 10 years? - ANSWER Frozen RBCs 9. What products have a 24 hour expiration & are stored at 1-6ºC? (4 products) - ANSWER WRBCs, DRBCs, THAWED fresh frozen plasma, THAWED cryo-reduced plasma 10. What blood product is stored at 20-24ºC and has a shelf life of 5 days with constant agitation? (2 products) - ANSWER single donor platelets and random donor platelets 11. If a product is stored at 1-6ºC and is exposed to air what is the new expiration? - ANSWER 24 hours 12. If a product is stored at 20-24ºC and is exposed to air what is the new expiration? - ANSWER 4 hours 13. Once a RDP is pooled what is the new expiration and what was the original expiration? - ANSWER new expiration = 4 hours original expiration = 5 days with agitation 14. What is the shelf life of irradiated blood components? - ANSWER 28 days - not to exceed original expiration 15. What is the single most important variable for positive blood culture detection? A. Blood volume B. Incubation time C. Time of collection D. Prep of venipuncture site A. Blood volume 16. A 24-year-old female is diagnosed with gonorrhea and the physician also suspects chlamydia. The correct treatment is A.Amoxicillin. B.Ceftriaxone. C.Cefixime and amoxicillin. D.Ceftriaxone and azithromycin. D.Ceftriaxone and azithromycin. 17. Three sets of blood cultures (6 bottles) are drawn from a car accident patient in the emergency department. One aerobic bottle demonstrates a positive signal in a continuous monitoring system at 24 hours. Gram stain reveals Gram-positive cocci in clusters, which are catalase positive, and produced non-hemolytic colonies on a sheep blood agar plate. Which of the following is the most likely explanation for these findings? A. Septicemia due to Staphylococcus aureus B.Septicemia due to Bacteroides fragilis group C.Contamination due to staphylococci D.Contamination due to fecal biota C.Contamination due to staphylococci