BLOOD COLLECTION

35問 • 6ヶ月前

問題一覧

Without clot activators, blood specimens for serum testing must first be allowed to clot for ____ before centrifugation and removal of the serum.

30-60 MIN

Anticoagulant that inhibits thrombin

HEPARIN

This c'mon anticoagulants chelates or binds to calcium

K2 EDTA, SODIUM CITRATE

Accelerates the clotting process and decreases the specimen preparation time

CLOT ACTIVATOR

Inhibits the metabolism of glucose by blood cells.

ANTI GLYCOLYTIC AGENT

Most c'mon anti glycolytic agent used in hematology

SODIUM FLUORIDE

An inert material that undergoes a temporary change in viscosity during the centrifugation process; this enables it to serve as a separation barrier between the liquid (serum or plasma) and cells.

GEL SEPARATOR

This additives cannot be used in blood banking procedures

GEL SEPARATOR

Preferred anticoagulant for platelet counts

ETHYLENEDIAMINETETRAACETIC ACID, TETRAACETATE

EDTA is used in concentrations of

1.5 MG/1ML WB

this is recommended by the International Council for Standardization in Hematology (ICSH) and CLSI as the anticoagulant of choice for blood cell counting and sizing because they produce less shrinkage of RBCs and less of an increase in cell volume on standing.

DRY FORM, K2 EDTA

This is preferred in performing/ creating blood smear than the powdered form because it mixes more easily with the blood, creating high quality blood films provided that they are made within 2-3 hours of drawing a specimen.

K3 EDTA, LIQUID FORM

removes calcium from the coagulation system by precipitating it into an unusable form. It has mild calcium chelating properties.

SODIUM CITRATE

Sodium citrate commonly used concentration for coagulation studies

3.2%

Sodium citrate contains CTAD or

CITRATE, THEOPHYLLINE, ADENOSINE, DIPYRIDAMOLE

also contain buffered sodium citrate and are generally used for Westergren sedimentation rates, as are lavender- top tubes.

BLACK TOP TUBE

Sodium citrate are used for studies such as

APTT, PT, WESTERGREN TESTING

ratio of blood to anticoagulant is for black top tube

4:1

ratio of blood to anticoagulant is for light blue top tube

9:1

used as an in vitro and in vivo anticoagulant. It acts as a substance that inactivates the blood-clotting factor thrombin. It anticoagulates blood by inhibiting thrombin and factor Xa.

HEPARIN

Heparin anticoagulant of choice when performing

OSMOTIC FRAGILITY TEST

Heparin is an inappropriate anticoagulant for many hematology tests, including

WRIGHT STAINED SMEAR

Distorts the cell morphology; RBCs become crenated (shrunken), vacuoles appear in the granulocytes, and bizarre forms of lymphocytes and monocytes appear rapidly when oxalate is used as the anticoagulant.

OXALATE

Excessive EDTA induces red cell ___ causing hematocrit value and Erythrocyte Sedimentation to be ____

SHRINKAGE, FALSELY DECREASE

may be useful in drawing blood from pediatric, geriatric, or other patients with tiny, fragile, or “rolling” veins that would not be able to withstand the vacuum pressure from evacuated tubes.

OPEN SYSTEM

The most common needle size for adult venipuncture is 21 gauge with a length of

1 INCH

Guages are used for children.

22-23

Needles are inserted of what degree

15-30

safety features to prevent accidental needle sticks.

NEEDLE HOLDER

consists of a short needle with plastic wings connected to thin tubing

WINGED BLOOD COLLECTION SET

The most common skin antiseptic is

70% ISPROPYL ALCOHOL

Cleanse the venipuncture site with a 70% isopropyl alcohol pad, using

BACK AND FORTH FRICTION

collect blood for a legal blood alcohol level, the phlebotomist must use a non-alcohol-based

CHLORHEXIDINE

If a vein cannot be located in either arm, veins on the__of the hand may be used.

DORSAL SURFACE

This additives cannot be used in blood banking procedures

GEL SEPARATOR

COMPH Lesson 5

Jef Marc Valencia · 73問 · 2年前

COMPH Lesson 5