Question 46
Unexplained bleeding is associated with immediate hemolytic transfusion reactions, but is not usually associated with delayed hemolytic transfusion reactions. The bleeding results from disseminated intravascular coagulation (DIC) due to ABO antibodies causing intraventricular hemorrhage (IVH).
Which of the following signs and symptoms may be associated with immediate transfusion reaction, but is NOT usually associated with delayed hemolytic transfusion reaction?
Question 47
To make a 1 : 10 dilution, 270 µL of diluent should be added to 30 µL of sample, .
A spinal fluid that is slightly hazy is briefly examined microscopically. The technologist performing the count decides to make a 1:10 dilution using 30 µL of sample. What volume of diluent should be used?
Question 48
1. B
2. C
3. A
Granular casts are composed of plasma protein aggregates and cellular remnants. Granular casts appear as cylinders of coarse, or fine, highly refractive particles.
Broad casts or "renal failure' casts are formed in the collecting ducts as the result of urinary stasis and are two to six times the size of other types of casts. Any type of cast can be a broad cast. Broad casts are typically seen in patients with advanced renal failure.
Hyaline casts, the type most commonly seen in urine sediment, have a refractive index similar to the urine in which they are suspended. For this reason, hyaline casts will appear almost invisible under brightfield microscopy, but are easily of seen by phase-contrast microscopy.
Match the following descriptions of casts with their appropriate name:
1. Casts with highly refractive particles
2. "Renal failure" cast
3. Low refractive index
Question 49
Microbiology
Matching: The detection of a distinct odor is often helpful in the presumptive identification of bacterial culture isolates. Match each of the odors listed with its corresponding bacterial species name.
1. Streptococcus anginosus (milleri)
2. Pseudomonas aeruginosa
3. Eikenella corrodens
4. Alcaligenes faecalis
Question 50
An ultrarapid metabolizer (UM) would require a higher dose of a drug than an EM (a person with normal enzyme activity) since the UM eliminates the drug more quickly.
A CYP2D6 ultrarapid metabolizer (UM) would require ___________ dose of an active drug (non-prodrug) that is metabolized by CYP2D6 than a CYP2D6 extensive metabolizer (EM).