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chapter 4
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antecubital space
area in front of the elbow
arteries
blood vessels that carry blood away from the heart
buffy coat
narrow middle layer of white blood cells and platelets in a centrifuged whole blood specimen
capillaries
microscopic blood vessels that contain a mixture of arterial and venous blood
caplliary action
process by which blood flows freely into a capillary tube in microcollection procedures
cyanotic
a condition in which the skin and mucous membranes are blue; caused by an oxygen deficiency
edema
abnormal collection of fluid in interstitial spaces
evacuated
to remove air to produce a vaccum
hematoma
tumor or swelling of blood in the tissues ( bruising during blood collection procedures)
hemoconcentration
condition in which blood cencentration of large molecules such as proteins , cells and coagulation factors increase
humors
fluid or semifluid substances found in the body
interstitial fluid
all the fluid except blood that is found in the space between tissues ; aslo referred to as tissue fluid
lumen
inner tubular space of a needle, vessel or tube
microcollection
collecting a small amount of blood
osteomyelitis
inflammation of the bone ; caused by bacterial infection
palpating
gently touching and pressing down on an area to feel texture , size , and consistency
petechiae
tiny purple or red skin spots caused by small amounts of blood under the skin
phlebotomy
blood collection
plasma
liquid part of whole blood
serum
liquid part obtained when blood is clotted ; lacks clotting factors
syncope
fainting
veins
blood vessels that carry blood toward the heart
the veins most commonly used when performing venipuncture
antecubital space
______ is the most commonly used vein
median cubital
collection containers for venipuncture are called
vacuum tubes
what is the most critical error a phlebotomist can make?
misindentifying the patient
during a blood drawn procedure a hematoma begins to form why would this occur?
the bevel is only partially inserted in the vein
which tube is used for coagulation studies
light blue
a capillary puncture is performed on a newborn what step is incorrect
a lancet no deeper than 3 mm is used for the puncture
what is incorrect when collecting blood
the tourniquet is removed after the last tube and the needle are removed
if the angle of needle insertion is lower than 15 degrees during a venipuncture procedure which may occur
the needle may enter above the vein
what is the recommended maximum time to leave a tourniquet on?
1 minute
which of the following tests should not be done by the capillary puncture method?
blood cultures
blood vessels are part of the ____ system
cardiovascular
that make up a closed circuit system
blood vessel except capillaries have three layers which are
tunica adventitia: outer layer
tunica media: middle layer
tunica intima: inner layer
capillary puncture is also called
skin puncture or stick
microcollection tubes hold more than
capillary tubes
blood normally clots in
2 to 6 minutes
PKU
phenylketonuria
diameter of the needle is called the
gauge
the space inside the needle is referred to as the
lumen or bore
hemolysis
breaking open of red blood cells and the release of hemoglobin
Author
139shay
ID
175365
Card Set
chapter 4
Description
chapter 4
Updated
2012-11-15T03:33:36Z
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