1
Samples that exhibit diurnal variation must be collected at specific times? True or False
True
What happens if a plunger is pulled back too fast?
Hemolyze
Chemotherapy can alter what test results?
decreased White blood cell and platelets
A patient is not fasting for a "non fasting sample" what do you do?
write fasting on the lab slip
or
check with the physician that ordered to see if they still want the labs
Blood that leaks from the vein into the surrounding tissue causes?
hematomas
Mrs. Sloat's husband's name?
Brad
herbal supplements can alter what lab values?
increased prothrombin time (PT) and activated partial thromboplastin time (APTT)
Large molecules can be affected by a patient's posture? True or False
True
You enter a vein and you do not get blood, what do you do?
Parents should not hold their kids in their laps while their child is having blood drawn? True or False
False
Smoking can alter what test results?
increased hemoglobin
What is the first thing you do if someone is starting to faint?
remove the tourniquet and needle
stress can alter what lab value?
increased PO2 (the amount of oxygen dissolved into blood) and white blood cells
Hemolyzed samples cause what lab value to be falsely elevated?
potassium
A patient who appears pale and has cold, damp skin may develop?
syncope
using a 20 gauge needle and a large evacuated tube on a small vein can cause
a collapsed vein
A condition caused by blood accumulating in the tissues of the muscles causing muscle and nerve injury?
compartment syndrome
prolonged fasting can alter what lab test
decreased glucose
posture change from supine to erect alters what test results?
Use ammonia inhalants when someone is passing out? True or False
False
Name one factor that could cause nerve injury?
inserting needle greater than 30 degrees
laterally redirecting needle from basilica vein
blind probing
Lipemic serum appears?
Cloudy due to the presence of fat
What can happen if you leave the tourniquet on and remove the needle?
hematoma
A sample collected from a patient that has recently eaten may appear?
lipemic
Tests that are most critically affected when a patient is not fasting at the time of collection include?
glucose, cholesterol, triglycerides, or lipid profiles
Forcing blood from a syringe into an evacuated tube may?
increase potassium levels
Why are geriatric patients more prone to infection after a venipuncture?
their epidermal cells are replaced more slowly
and
their immune system is weakened
The effects of a posture change in a patient can have a great effect on lab tests. These effects are most noticeable for lipid profiles? True or False
False
The effects are greatest in patients with congestive heart failure and liver disease
A dark bulge appears when you enter the vein, what is this?
Hematoma
Why are labs drawn in the early morning?
the patient will be in at the basal state, having restrained from strenuous exercise and having fasted for 12 hours
Strenuous exercise may affect the results of tests for? Name one
lactate dehydrogenase and creatine kinase
At what time in the morning are patients most likely to be in a basal state?
6am
Why are older people more likely to form a hematoma?
A vigorously crying child could elevate which lab value?
White blood cell count
You draw blood and force the blood from the syringe into an evacuated tube and the serum is red, this specimen is _______________ and ___________________ will be elevated?
hemolyzed, potassium