Test three Flashcards
Which instance most closely resembles basal state?
A patient who has just awakened at 0600 after fasting all night.
A patient who has been lying down for an hour.
A patient who has just arrived for a fasting blood test.
A patient who has worked all night but did not eat at work.
A patient who has just awakened at 0600 after fasting all night.
You most draw a promtime specimen from a patient with IVs in both arms. Which of the following is the best thing to do? Draw the specimen above the IV. Draw specimen below the IV. Draw the specimen from an ankle vein. Draw the specimen from the IV.
Draw the specimen below the IV.
It is not a good idea to collect a CBC specimen from a screaming from a screaming infant because the
white blood count may be falsely elevated.
You have no choice but to draw a specimen from a site with a hematoma.Where should you obtain the specimen?
Distal to the hematoma
Prolonged tourniquet application may cause a change in blood composition primarily because of
hemoconcentration.
Which of the following vascular access devices is placed in a peripheral vein for the purpose of blood collection and administration of medication ? Fistula Heparin lock Implanted port PICC
Heparin lock
A phlebotomist has attempted twice to draw a partial thromboplastin time (PTT) specimen from a patient with difficult veins .Both times the phlebotomist has been able to draw only a partial tube. What should the phlebotomist do?
Have another phlebotomist attempt to draw the specimen .
Why do pregnant patients have lower reference ranges for red blood cell counts?
Body fluid increases in pregnancy,diluting red blood cells.
Levels of which analyte can differ by 50% or more between morning and late afternoon?
Cortisol
Which situation is the best way to tell that you may have accidentally punctured an artery? A hematoma starts to form. The blood obtained is dark red. The blood pulses into the tube. There is no way to tell.
The blood pulses into the tube
If blood is drawn too quickly from a small vein, the vein will have a tendency to ….
Collapse.
how long before obtaining blood for testing should drugs known to interfere with blood test be discontinued?
4-24 hours
A fistula is a(n)…
Permanent fusion of an artery and vein.
When a test requires a fasting specimen, but the serum is _______,it is clue that the patient is not fasting.
Lipemic
Tests influenced by diurnal variation are often ordered as __________ tests, and it is important to collect them as close as possible to the time order.
Timed.
Tattooed areas should be avoided because
Fresh tattoos sites may be more prone to infection
Tattoos can mask an adverse reaction to the draw
There could be an undetected infection in that area
All options are correct.
All options are correct
An arm that is paralyzed has
Lost muscle funstion
Which of the following is the BEST way to avoid reflux when drawing a blood specimen?
Full tubes from bottom up
Do not use overfill additive tubes
Use the correct order of draw
All options are correct
Full tubes from bottom up
If a patient is complaining of sharp radiating pain from the needle insertion site, the phlebotomist should
Immediately terminate venipuncture
Hemolysis can erroneous elevate
Ammonia
Magnesium
Potassium
All options are correct
All options are correct
A tube fails to fill with blood during a venipuncture. Which of the following might lead you to think that the vein has collapsed l?
The vein disappears when you engage the tube
Yeh creatinine rate decrease in elderly patients due to a normal decline in
Kidney function
When the blood from
An ETS tube “backwashes” into the orient is known as _________.
Reflux
Removing blood on a regular basis or in large amounts can lead to ______________.
Iatrogenic
