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25 Cards in this Set
- Front
- Back
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The function of a hematology laboratory are:
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1. Confirm physicians impression of a possible hematological disorder.
2. Establish or rule out a diagnosis. 3. Screen for asymptomatic disorders. |
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The major intended purpose of the laboratory safety manual is to:
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Protect the patient and laboratory personnel.
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Which of the following is not an appropriate safety practice?
*Disposing of needles in a biohazard, puncture proof container. *Frequent handwashing *sterilzing lancets for re-use. *keeping food out of the same area as specimens. |
*sterilzing lancets for re-use.
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If a blood specimen is spilled on a lab bench or floor, the first step in clean up should be.....
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1. absorb all visible blood with disposable towel
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The most basic and effective procedure in preventing nosocomial infections is....
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Handwashing between patient contact.
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The likeihood of infection after exposure ot HBV-infected or HIV infected blood or body fluids depends on all of the follwing factors except the:
A)Source (anatomical site) of blood or fluid b)concentration of the virus c)duration of the contact d)presence of nonintact skin |
Source (anatomical site) of blood or fluid
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HBV and HIV may be directly transmitted in the occupational setting by all the following except:
a)parenteral inoculation with contaminated blood. b)Exposure of intact skin to contaminated blood or certain body fluids. c)Exposure of intact mucous membranes to contaminated blood or certain body fluids. d)Sharing bathroom facilities with an HIV positive person. |
d)Sharing bathroom facilities with an HIV positive person.
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Standard precaution have been instituted in clinical labs to prevent _____ exposures of healthcare workers to bloodborne pathogens such as HIV and hepatitis B virus.
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All the following-
Parenteral NON-intact mucous membrane NON-intact skin |
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Exposure to ______ constitures the major source of HIV and HBV infection in healthcare personnel.
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BLOOD
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The transmission of Hepatitis B is more probable than transmission of HIV.
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Gloves for medical use may be sterile or nonsterile and latex or vinyl.
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The value is known in a specimen similar to a patient's whole blood or serum is
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Control
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Closeness to the true value is
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Accuracy
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Comparison to a known physical constant is
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Calibration
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How close the test results are when repeated is called
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Precision
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A purified substance of a known composition is
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Standard
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The process of monitoring accuracy and reproducibility of known control results is called
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Quality control
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The difference between the upper and lower measurements in a series of results is called ...
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Range
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The expression of the position of each test result to the average is called ...
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Standard Deviation
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The arithmetic average is called the....
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Mean
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The degree to which test data vary about the average is called the ....
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Variance
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The z score measures what?
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The z score measures how many standard deviations of a particular number is from the right or left of the mean.
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Acceptable limits of a control value must fall
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within +/- 2 standard deviations of the mean.
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A trend change in quality control data is ....
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a progressive change in one direction away from teh mean for at least 3 days.
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A continuously increasing downward variation in a control sample in one direction from teh mean can indicate....
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1) deterioration of reagents used in the test.
2)deterioration of the control specimen. 3) deterioriation of the component in an instrument. |
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A Gaussian curve represents a normal bell shaped distribution.
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Two standard deviations (2SD) from the mean in a normal distribution curve would include 95% of all values.
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