When x-rays pass through matter, which interaction results in x-rays being scattered in all directions 60 percent of the time?
A) Coherent effect
B) Photoelectric effect
C) Compton effect
C
Explanation: A) The Compton effect causes x-rays to be scattered in all directions.
B) The Compton effect causes x-rays to be scattered in all directions.
C) The Compton effect causes x-rays to be scattered in all directions.
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On a Levey-Jennings chart, the final single data point falls outside the +3 SD mark. According to Westgard Rule 13s, should the most recent run be accepted?
A) No, because any data point that does not exactly equal the mean value must be rejected. B) No, because the data point falls outside the accepted range of ± 3s. C) Yes, because runs are rejected only if six or more consecutive data points deviate by greater than +3 SD from the mean. D) Yes, because values that fall beyond positive standard deviations from the mean are still within the acceptable range.
Clot-based mixing studies and Bethesda titers are used to test for:
a. Vitamin K deficiency b. Inhibitors (antibodies) against coagulation factors c. DIC d. Hemophilia
The process in which bacteria cells reproduce the cells, splitting and forming two daughter cells from a single parent cell is called:
A. binary fission. B. sexual reproduction. C. binary fusion. D. cell synthesis.
Which of the following is true in relation to RHIOs?
A) They improve patient care. B) They eliminate the need to repeat all laboratory testing. C) All medication errors are eliminated. D) Patient safety is decreased.