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Clinical Med ch 4&9
ch4&9 mlt 100
Definition | |
---|---|
A major Advantage of POCT is: | Faster turnaround time |
POCT assays are usually in which CLIA category? | waived |
Over-the-counter test kits are in which CLIA category? | waived |
What is the lowest level of horomone for which most current serum hCG tests can give a positive result | 25 mIU/mL |
The most specific assays for human chronic gonadotropin(hCG) use antibody reagents against which subunit of hCG | beta |
An important characteristic to be considered when selecting a POCT instrument is | rapid turnaround time, easy to perform protocol |
What is the ultimate goal of the laboratory? | produce accurate information in a timely manner |
computer technology can be used for | specimen processing, inventory control, ordering tests |
The function of a CPU | executes software instructions |
Short term memory | exchange of information |
The laboratory can have directly connected computers that can access the hospital record system by | use of routers and forming an LAN |
An example of laboratory information system functionality is | specimen tracking, quality control, archive patient cumulative reports |
Future challenges for laboratory automation standards include all the following | developing uniform collection devices |
As estimated by The Joint Commission, what percentage of the information that physicians rely on is generated by the laboratory | 80% |
The major benefits of laboratory automation is | reduction in medical errors, improved safety for laboratory staff, faster turnaround time |
Steps in automation designed to mimic manual techniques include | pipetting of specimen, pipetting of reagents, measurement of chemical reactions |
What is a common principle applied in immunochemistry | enzyme immunoassay |
When hematology cell counters detect voltage pulses, what principle is being applied? | electrical resistance |
A three part blood cell differential separates | Mononuclear cells granulocytes and lymphocytes |
Semiautomated routine chemical screening of urine uses what test principle | reflectance photometry |
PCR testing is useful in | forensic /genetic testing, disease diagnosis |
One of the top five causes of preanalytical errors is | improperly filled blood collection tube, patient incorrectly identified, test request error |
Which transmission based infection control precaution stops direct spread of bacteria by touching | contact precautions |
Which transmission based infection control precaution stops agents dispersed by talking , coughing, or sneezing | Droplet precautions |
Which transmission based infection control precaution provides fromm dust particles | airbourne precautions |
When the coagulation of fresh whole blood is prevented through the use of an anticoagulant the straw colored fluid that can be seperated from the cellular elements | plasma |
Which characteristic is inaccurate with respect to the anticoagulant dipotassium ethylenediaminetetraacetic acid | is used for most routine coagulation studies |
Heparin inhibits the clotting of fresh whole blood by neutralizing the effect of | thrombin |
An evacuated tube with EDTA has a | lavender colored stopper |
An evacuated tube with Heparin has a | green colored stopper |
An evacuated tube with sodium citrate | blue colored stopper |
An evacuated tube with no anticoagulant has a | red colored stopper |
The first category of steps in performing a venipuncture includes | Introduce yourself and briefly explain the procedure to the patient |
The second category of steps in performing a venipuncture includes | Identify the patient , check test requistions, assemble equipment, wash hands, and put on latex gloves |
The third category of steps in performing a venipuncture includes | select an appropriate site and prepare the site |
The fourth of five steps in performing a venipuncture | reapply the tourniquet and perform the venipuncture |
The final category of steps in performing a venipuncture | Remove tourniquet remove needle apply pressure to site and label all tubes |
The appropriate veins for performing a routine venipuncture | cephalic basilic and median cubital |
How should the bevel of the needle be held during a venipuncture | upward |
A hematoma can form if | the needle punctures both walls, |