Hem Lec Ch1
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OSHA stands for?
Occupational safety and Health Administration act and Standards.
CHP stands for?
Chemical hygiene plan
The most important source of HBV and HIV is?
Viral concentration is higher for 1._____ then 2.____.
The function ( or functions) of a hematology laboratory is (are) to ?
- Confirm physician's impression of a possible hematological disorders
- establish or rule out a diagnosis
- screen for asymptomatic disorders.
The major untended purpose of the laboratory safety manual is to?
protect the patient and laboratory personal
which of the following is NOT as appropriate safety practice?
Sterilizing lancets for reuse.
IF the blood is spilled on a laboratory bench or floor area, the first step in cleanup should be?
absorb blood with disposable towels.
which of the following procedures is the most basic and effective in preventing nosocomial infections ?
washing hands between patients contacts.
The likelihood of infection after exposure to HBV-infected or HIV-infected blood or body fluids depends on what following factors?
- Concentration of the virus
- Duration of the contact
- presence of non intact skin
HBV and HIV may be directly transmuted in the occupational setting by ?
- parental inoculation with contaminated blood
- exposure of intact skin to contaminated blood of certain body fluids
- exposure of intact mucus membrane to contaminated blood or certain body fluids.
Standard precautions have been instituted in clinical laboratories to prevent __________ exposure of healthcare workers to bloodborn pathogens such as HIV and HBV
- nonintact mucous membrane
- nonintact skin
Exposure to __________ constitutes the major source of HIV and HBV infection in health personnel?
The transmission of HBV is ________ probable than transmission of HIV
the transmission of HIV is ___________ probable than transmission of HBV
In what laboratory situation is a verbal report permissible?
When emergency test results are needed by a physician
closeness to a true value
Comparison to a known physical constant is
The value is known in a specimen similar to a patients whole blood or serum
how close test results are when repeated is?
A purified substance of a known composition is?
The process of monitoring accuracy and reproducibility of known control results is?
The arithmetic average is ?
The difference between the upper and lower measurements in a series of results is known as?
The degree to which the data vary about the average is known as?
the expression of position of each test result to the average is known as ?
Acceptable limits of control value must fall within ?
+/- 2 standard deviations of the mean
The progressive change all in one direction away from the mean for at least 3 days is known as?
trend change in QC data
A continuously increasing downward variations in a control sample in one direction from the mean can indicate
- - deterioration of reagents used in the test
- - deterioration of the control specimen
- - deterioration of the component in an instrument
which is true of a Gaussian curve?
it represents a normal bell shaped distribution.
Two standard deviations (2SD) from the mean in a normal distribution curve would include?
95% of all values
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