Chapter 8 and 9 Flashcards
(44 cards)
why are blood cultures drawn?
They are drawn to test the blood for the presence of bacterial or fungal iinfection in the blood
what are preanalytical errors?
errors that occur before testing a specimen
whats the most common preanalytical errors?
misidentification of a patient or speciemen
how can you avoid preanalytical errors?
PBT must identify patient using two unique identifiers such as asking patient to state and spell name and state their date of birth
when should you use a winged collection set (butterfly needle)? 3
- when a patient has small of fragile veins
- getting blood drawn from the back of the hand
- and some collections like blood cultures are performed with it
what does sodium fluoride do?
It acts as a prevention from the deterioration of glucose
Mostly, what tubes are serology tests drawn in?
serum separator tubes
what’s the order of draw for blood culture and coagulation tests?
- For blood cultures you should always do those first and then follow order of draw if other tubes
- For coagulation tests they would go right after blood cultures then follow order of draw if other tubes
what type of additive doesn’t change the quality of blood?
anticoagulants
what is the capillary puncture order of draw? 4
- Blood gases
- EDTA tubes
- Tubes with other additives
- Serum tubes
what are timed draws?
blood draw that must happen at a specific time
what a peak in timed draws?
a peak is when medication is at its highest level in the bloodstream
what’s the trough in timed draws?
where medication is at its lowest point in the blood stream
true or false: sometimes blood’s drawn to ensure patient is recieving the right amount of medication.
true
when are trough levels most accurately measured?
before the next dose is schedules
what’s the peak time for IV meds?
15-30 minutes after medication has been given
what’s the peak time for oral medications?
an hour after medication was swallowed
how to identify patients to avoid serious problems?
use two unique identifiers
what are the most common unique identifiers?
- state and spell full name
-state date of birth
what’s the correct handling for light-sensitive analytes?
- collected in amber tubes
- or shielded from light by wrapping tubes in foil
- or placing them in light blocking bags
what’s the correct handling for body temperature sensitive specimens?
collect in a prewarmed tube and place in a heating block
how should you store and transport specimens that must be kept cold?
ice slurry/cold pack
how should you handle a patient who has a history of passing out?
You should keep them in a chair that can recline or put them on a reclined or flat surface
what are bariatric chairs used for?
obese patients
