Blood Collection Bookbased Flashcards
Active ingredient in both antiseptics and disinfectant
A chemical thst kills or inhibits growth of living microorganisms
Biocide
Why dont u recommmend cotton balls
Cotton fibers might stick to the site and upon removal, bleeding may reinitiate
Common multisample needle lenth
1 or 1.5. Inches
Common butterfly needle length
0.5-0.75
Length selection depends on
User preference and deoth of the vein
A large needle may cause___ and a small needle may cause
Damage to vessels;hemolyzation
Needle safety devices must:
A. allow the phlebotomist to safely activate it with both hands.
one nand
B. create a barrier between a user’s hand and the needle after use. permovert
C. provide temporary containment of the used venipuncture needle.
D. All of the choices are correct.
B.
A needle safety device must be activated using one hand, not two. It must provide permanent-not temporary-containment of the used needle. However, the device must create a barrier between the user’s hand and the needle after use, which is the correct answer.
To satisfy OSHA regulations, if a needle. does not have a safety feature, the equipment with which it is used (such as a tube holder or syringe) must have a safety feature to minimize the chance of an
accidental needlestick.°
ETS needles without safety features must be used with
tube holders that have safety features.
S If the tube holder does not have a safety feature, you must use a
needle with it that has a safety feature.
Loss of vacuum is because of
Improper storage, opening of the tibe, dropping the tube
If the additive prevents clotting, the result is a
Whole blood specimen
If the additive is a clot activator, the blood will clot and
The specimen must be centrifuged to obtain the fluid portion
Plastic red tops used to collect blood specimens usually contain:
A. anticoagulants.
B.clot activators.
C. no additives.
D. preservatives.
Why?
B.
contain clot activators (the correct answer) because plastic tubes are so smooth inside that platelet aggregation and adhesion are inhibited,
Kapag glass it has a rougher surface no need for clot activators
What gauge increase the chances for hemolysis
Gauge 25
The first tube collected with a blood collection set will underfill because _____. If the tube contains an additive, the blood-to-additive ratio will be affected. To remove the air from the tubing before collecting an additive tube, ____
This tube is discarded, and collecting it is referred to as collecting a clear or discard tube. Collecting a discard tube is essential whenever a coagulation specimen is collected using a blood collection set.
of air in the tubing; a few milliliters of blood must be collected in a nonad-ditive tube or another additive tube of the same type.
What will you do if u observed a microclot
Discard and recollect blood specimen
Excess EDTA, which results when tubes are underfilled, _____
can cause RBCs to
shrink and negatively affect CBC results.
____ is also the additive in special erythrocyte sedimentation rate
(ESR) tubes with ___ stoppers.
Sodium citrate; black
What will happen if u underfulled a citrate tube
Prolonged clotting time
In potassium tets, what is preffered heparinized pr serum, why?
Hepranized becuase when serum is used it may cause elevated potassium levels and affect the results
What are the three heparin frormulation
Lithium, sodium, and ammonium
are used for lithium levels and some immunology tests.
Sodium heparain
s primarily used in microcapillary tubes for HCT determinations.
Ammonium heparin
causes the least interference in chemistry testing and is the most widely used anticoagulant for both plasma and whole-blood chemistry tests.
Lithium heparin
Excess oxalate in tubes may cause what
Hemolysis
What causes least interference in the order of draw
Heparin
CLSI
Clinical and Laboratory standards institute
Contamination of blood culture bottles can cause
False positive results and delayed care for the patient
A trace element free tube stopper is
Royal blue
Silicon coating reduce what
It reduces red cell adherence to tube walls
What are the clot activators in a serum separator gels and red tops
Silica
PPTs meaning
Plasma preparation tubes
PSTs
Plasma separator tubes
SSTs
Serum separator tubes
PPTs contain
EDTA and thixotropic gel (plasma preparation tubes)
PSTs contain
Lithium heparin and thixotropic gel
SSTs contin
clot activator and thixotropic gel, used for serum not plasma
an inert (nonreacting) synthetic substance initially contained in or near the bottom of certain blood collection tubes.
Thixotropic gel
Rationale for collection order of SPS
Minimizes chance of microbial contamination
Rationale for collection order of coagulation tubes sodium citrate
Because all other additive tubes affect coagulation tests
Rationale for collection order of glass non additive tubes red
Prevents contamination by additives
Rationale for collection order of plastic clot activator tubes red
Because silica particles activate clotting and affect coagulation test
Rationale for collection order of plastic clot activator tubes red
Because silica particles activate clotting and affect coagulation test
Rationale for collection order of heparin tubes w gel/ PSTs
Heparin affects coagulation tests; it causes least interference in tests
Rationale for collection order of EDTA tubes PPTs
Responsible forr more carryover problems than any other additive; elevates Na and K levels, chelates and decreases calcium levels
Rationale for collection order of oxalate or fluoride tubes
Filled after hematology tubes because oxalate damage cell membranes and causes abnormal RBC morphology. It interferes in enzyme reactions
SESIP meaning
Sharps with engineered sharps injury protection
What antiseptic is used in blood donation
Povidone-iodine
Citrate – prevents
Phosphate –
Dextrose –
Citrate – prevents clotting by chelating calcium
Phosphate – stabilizes pH Dextrose – provides cell energy
Citrate ratio
9 blood:1 coagulant
When antiglycolytic agent is not used in determining glucose levels,
it has a decreased level of 10 mg/dL per hour
Inversions of antiglycolyric agent
5-10
How many inversions are there in tubes with silica or clot activators
5-10
How many inversions are there in tubes with silica or clot activators
5-10
