How can we help?

You can also find more resources in our Help Center.

173 terms

laboratory & blood collection procedures chapter 4

STUDY
PLAY
approximately 1 % of whole blood
in a normal hematocrit,the buffy coat accounts for
alcohol
which of the following is generally used to cleanse the skin before drawing blood
alcohol
inaccurate test results may occur in certain tests when what is used to prepare the skin prior to venipuncture
give the patient a high carbohydrate drink immediately after the first blood draw
which of the following would be part of the preparation for an oral glucose tolerance
soap and water
which of the following is used to prepare the skin before a venipuncture when alcohol causes inaccurate results for certain tests
2
after how many unsuccessful attempts at obtaining a good blood sample should you seek assistance from your supervisor or the doctor
the heel
the best site for drawing blood from an infant is
gather your supplies and samples quickly as possible to avoid alarming the child with blood-collection tubes
which of the following is important when drawing blood from children
recognize changes in skin conditions that increase bruising
which of the following is important when drawing blood from an elderly patient
median cubital and cephalic veins
the most common sites for venipuncture are the
fluid and electrolyte imbalances
blood test for potassium and sodium identify
anemia
an erythrocyte count(RBC) test is used to identify
kidney disorders
a blood urea nitrogen(BUN) test is used to identify
cleanse the venipuncture site using a circular motion starting at the center and working outward
which of the following would you include when preparing a venipuncture site
insert the needle at 15 degree angle with the bevel side up
which of the following would you include when performing a venipuncture using an evacuation system
lancet
which of the following is used in the capillary puncture technique
the patients non-dominant hand is used for this procedure
which of the following is characteristic of the capillary puncture
the needle and syringe system
which method of drawing blood would you use on a patient with small or fragile veins
the capillary puncture
which procedure for obtaining a blood sample in adults and children is usually performed on the middle or ring finger
the evacuation system
which blood collection device uses interchanageable collection tubes that allow you o draw several blood specimens from the same venipuncture site
they are small disposable instruments with a sharp point used to puncture the skin
which of the following us characteristics of lancets
micropipette
a small calibrated glass tube that holds a precise volume of fluid is called a
136-145 mEq/l
the normal sodium blood level is
11-15 seconds
normal prothrombin time (PT) is
3.5-5.1 mEq/l
the normal range for potassium in the blood is
74-120 mg/dl
the normal blood glucose level is
total cholesterol
which blood test identifies coronary artery disease and atherosclerosis
uric acid
gout is identified by which type of blood test
sharps container
a puncture resistant leak-proof container used to dispose of needles,lancets,and other sharp objects is called a
all of the choices
which of the following factors result in failure to draw blood during venipuncture
HIV infection
enzyme-linked immunosorbent assay(ELISA) and western blot test are used to confirm which of the following disorders
antigens
a substance that when present on the surface of red blood cells causes the formation antibodies that interact specifically with it are called
hemocytometer
which of the following is a special piece of equipment that allows one to count blood cells by examining a diluted blood sample under a microscope
hematocrit determination
which of the following identifies how much of the volume of a sample is made up of red blood cells after the sample has been spun in a centrifuge
analyze hormone levels
to evaluate the endrocine system, one would
all of the choices
which of the following may cause changes in basal state
a differential
a percentage of each type of white blood cell in a total of 100 white cells observed is referred to as
incubation
maintenance at a specific temperature for a specific amount of time until growth or a reaction occurs is
6 months
the general lab centrifuge (GLC) is calibrated every
bleeding time
the ivy method and the duke method are used to measure
ketosis
an accumulation in the body of substance, known as ketones which may be detected by testing urine,commonly observed in starvation,pregnancy and diabetes is
evaluating anticoagulant drugs
the laboratory test for prothrombin time would be for
assessing risk of coronary heart disease
the laboratory test for cholesterol would be
assessing hemostasis
the laboratory test for bleeding time would be for
detecting inflammation or infection
the laboratory test for a white blood cell count would be for
beginning of each day
the temperature of the centrifuge is checked at the
assessing glomerular filtration rate
the laboratory test for creatinine would be for
1.5 mm
for capillary collection from infants, a lancet with which of the following lengths should be used to avoid penetrating the bone
forming a clot
anticoagulants prevent the blood from
apply pressure to the site
if during the course of a venipuncture, the patient starts to bleed severely, you should
40 mm hg
for the surgical bleeding time test, the blood pressure cuff must be inflated on the patients upper arm to
all of the choices
the phlebotomist would play an active role in patient education for which of the following procedures
aiding in diagnosis of anemia
the laboratory test for hematocrit would be for which of the following
diagnose bacteremia
the laboratory test for a blood culture is used for which of the following
glucose tolerance
the test that is required to test the patients insulin releasing mechanism is called
both b and c triglyceride cholesterol
a fasting blood specimen is needed for which of the following clinical laboratory
collecting blood through CVC's
of the following lab test, which procedure requires 10mL normal saline and 2 or 3-20 M1 disposable syringes
vitamin k
the prothrombin in the blood clotting process is dependent upon which of the follwoing
both a and b confirming diabetes mellitus hypoglycemia
the laboratory test for glucose tolerance would be
bromsulphalein dye
which of the following dyes would be used to test a patients liver function
meningities
spinal fluid cultures are used to determine
all of the above
a centrifuge is a piece of laboratory equipment used for which of the following
bilirubin
which of the following blood chemical constituents is light sensitive
hemoconcentration
when blood is collected from a patient the serum should be separated from the blood cells as quickly as possible to avoid
lab results are unreliable if specimens are collected
after ingestion of alcohol
synovial fluid
which of the following fluid is extracted from joint cavitites
antecubital fossa
the most common site to perform a ventipuncture, or the bend of the arm is called
anisocytosis
a state of abnormal variations is the size of red blood cells in the blood is
all of the above
which of the following items are needed to collect a blood culture specimen
all of the above
a prolonged bleeding time for a patient may be caused by the patients intake of
all of the choices
if a blood specimen is allowed to clot,without added anticoagulant this is what remains
to avoid excessive bleeding
why is it necessary to control the depth of a lancet insertion during skin puncture
all of the choices
which of the following conditions listed affect laboratory test on blood specimens
all of the choices
hemoconcentration can be caused by
buffy coat
a light colored layer of leukocytes and platelets which forms on the top of the red cell layer when a sample of blood is centrifuged or allowed to stand
bleeding and platelet
two primary test for platelet activity are the ___ time,which is used to assess platelet function, and the ___ count, whcih evaluates platelet production
increase localized blood flow
what effect does warming the site have on venipuncture
needle bevel is partially inserted in the vein
hematoma during venipuncture results from which of the following
median cubital vein
of the following veins which would be most frequently used for venipuncture
hollander test
the test that require passing a tube through the patients nose is called
the time required for erythrocytes to settle to the bottom of an upright tube at room temperature
the laboratory test for sedimentation rate is described as
both a and b rubber hose blood pressure cuff
which of the following are tourniquets used in venipuncture
3 major components
if a tube of blood is allowed to stand undisturbed, it will separate into
antiserum
serum that contains antibodies is referred to as
hemostasis
the rapid sequence of vascular spasm,platelet plug formation and coagulation is known as
4
how many counting chambers are used to count white blood cells
all of the above
which of the following would be reason to reject a specimen for testing
cortisol
of the following which is not considered a timed blood specimen
about 7.4
the normal pH of blood is
a spectrophotometer
an instrument which can be used to determine the concentration of a solution by measuring the light transmitted or absorbed by the solution is called
a specific density
a measurement of density is called
all of the choices
a labeled specimen must include
a patients chart
on a typical microcollection tray you would not find
incubator
a temperature controlled chamber into which inoculated media is placed so that bacterial growth will occur is called an
all of the choices
the complete blood count (CBC) includes which of the following tests
15 degree
what is the best angle for a needle insertion during venipuncture
their various densities
why does blood separate into three layers when centrifgued
6
to help minimize dizziness or fainting,blood donors should eat within ___hours of donating blood
glucose and triglycerides
what tests may be affected most if the patient is not fasting
sheath
hemogaurd is a type of
70% isopropyl
the most common antiseptic for routine blood draw is
23
the needle gauge with the smallest diameter is
gauge
needles are color coded according to
forceps
which of the following is not skin puncture equipment
PPD
the most common skin test performed is
low platelet count
a prolonged bleeding time is indicative of
serum enzyme test
a series of tests measuring enzymes released into the blood after a heart attack is
none of the choices
what is a reference point which test results are compared
none of the choices
when performing an arterial puncture you should
upward
the bevel of the needle should be in which position before entering a vein
alcohol
when drawing a specimen to test blood alcohol, the site cannot be prepared with
monitoring heparin therapy
what is the ACT used to determine
multiple draw needle
a retractable sheath is part of a
heparin lock
what is the special winged needle set that can be left in a patients vein for up to 48 hours and is used to administer medication and draw blood
flea
what is the name of the small metal bar that is inserted into the tube after collection of a capillary blood gas specimen used to aid in mixing the anticoagulant by means of magnet
septicemia
pathogenic bacteria or blood poisoning in the blood is called
the presence of circulation
what is the allen test used to determine
remove needle and apply pressure to the site
if a hematoma starts to form during the course of a phlebotomy which of the following should be done
heparin
in arterial blood gas procedure for adults, which of the following anticoagulant is added to coat the syringe barrel
1 mL
for an ABG collection what is the required amount of sample
all of the choices
which of the following complications could be associated with the collection of arterial blood gas
.25mL
what should be the minimum volume of the capillary tube used to collect a specimen for capillary blood gas analysis
30 degrees
when using a pusher slide which is the correct angle
glucose
which blood test usually does not require skin puncture
bleeding time
which of the following test uses a template instrument to obtain blood testing platelet integrity
crossmatch
what is the name of the compatibility test performed before a unit of blood is determined to be suitable for transfusion
tolerance
a test of the bodys ability to absorb and utilize a particular substance is which of the following
surgicutt
which method is the most common bleeding time test
spinal fluid culture
which of the following methods is used for detecting meningitis
aspiration
the action by which a fluid will enter a tube or pipet because of the attraction between the glass and liquid is
gauge
a measure of the diameter of a needle is
microhematocrit
a hematocrit performed on a small sample of blood is
all of the above
which of the following is used in bedisde glucose testing
candida albicans
what is a commonly identified pathogenic agent causing skin nosocomial infections
h2o
which of the following is not included in testing for blood gas assay
B-D vacutainer system
a blood collection vacuum tube is part of the
lateral anterior area of the elbow
which of the following sites is not recommended to collect capillary blood gases
polycythemia
therapeutic phlebotomy is used in the treatment of
cortisol
which of the following blood analysis has a rise and fall in values with the time of day, and thus must be collected on time
5 mm
lancets with which of the following maximum lengths are suitable for older children
hemoconcentration
the value of a total protein test due to prolonged use of a tourniquet can produce changes in
near a tattoo
venipuncture at sites witch each of the following could affect test results except
at room temperature
phlebotomy needles should be stored
21
what gauge needles are commonly used for phlebotomy
use an IV line
which of the following procedures is nto done to obtain blood if a problem occurs during collection
TSH
cholesterol and ___ could be tested from the same tube
PT
serum glucose and ___ could not be tested from the same tube
direct coombs test
which of the following assays is performed in the immunohematology section
clinical chemistry
therapeutic drug monitoring usually is performed in which of the following sections
clinical microbiology
the ova and parasite procedure usually is performed in
2.4
a skin puncture on infants should not be more than how deep
30 degrees
the best angle for spreading a blood smear using two glass slides is
40 mm hg
for the surgicutt bleeding time test the blood pressure cuff must be inflated on the patients upper arm to
25g
what is the usual dose of D-xylose administered to the patient in the D-xylose tolerance test
cerebrospinal fluid
which of the following is obtained through a lumbar puncture
yellow-red-light blue-red/gray-green/gray-green-lavendar-gray
the NCCLS order of draw using conventional stopper is
sterile-red-light nlue-gold-light green-green-lavendar-gray
the NCCLS order of draw using vacutainer tubes with hemoguard closure
sterile-light blue-lavenda-green-gray-red
the alternate syringe order of draw is
blood culture
yellow stoppered tubes are used for
green
sodium heparin is the anticoagulant found in which color tube
k2EDTA
which of the following anticoagulants are found in the pink plastic blood collection vacuum tube
sodium heparin
which of the following additives is found in a royal-blue stopped vacuum tube
thrombin
which of the following additives is found in a orange plastic vacuum tube
blood glucose
which of the following test require the use of a blood collection tube with a gray stopper
sodium citrate
what additive is in a tube with a light blue stopper
red/glass tube
blood grouping typing and AIDS antibody test must be performed with a collection tube of what color
red
a blood collection tube that requires no additive is what color
hematocrit
which of the following procedures usually requires a lavender stopper collection tube
hemolysis
when blood is collected from a patient with a syringe and needs to be transferred to an evacuated tube phlebotomist should never push the blood into the tube because it will cause
true
a smear is a specimen spread thinly and unevenly across a slide
true
a preparation of a specimen in a liquid hat allows the organism to remain alive and mobile while being identified is wet mount
true
a clay sealer tray is used to plug the open end of microhematocrit tubes
false
high density lipoprotein cholesterol is known as the ''bad'' cholesterol