Chapter 53 & 54 Flashcards
(101 cards)
What is the portion of blood that is plasma ?
55%
What is the universal donor blood type and why?
Type O negative is referred as the universal blood donor.
Because there are no circulating antibodies to the ABO antigen, nor the RH antigens that might sensitize an Rh-negative recipient.
Define: hemoconcentration
A condition is which the concentration if blood cells is increased in proportion to the plasma .
Define: Hemolysis
The destruction or dissolution of red blood cells, with subsequent release of hemoglobin.
Define: syncope
Fainting.
What type of tube is used for hematology testing?
A lavender vacutainer
What tubes contain an anticoagulant?
Yellow, Red-grey (marbled), Light blue, Green, Lavender, Grey.
What tube is used for hematology testing?
Lavender
What tube is used for collecting GTT?
Glucose Tolerance Test. Grey tube
What tube is used for collecting plasma?
Green Grey Marbled
What is the density of thixotropic gel to RBCs?
This synthetic gel has density between that of red cells and plasma or serum, and it settles between the two during centrifugation, forming a barrier that facilitates retrieval of the liquid portion without cellular contamination.
What tube is used for collecting serum ?
Red-grey Marbled
Define Serum?
The liquid portion of whole blood that remains after the blood has clotted is serum.
What tube is used for coagulation studies?
Light blue
What is the procedure for mixing blood in tubes with an additive?
By inverting
What is the common needle size used for infants?
23 Gauge
What is the common size needle used on older adults?
23 Gauge
What is the common needle size used on adults?
20-21 gauge
What is the common needle size used for blood bank donations?
16 Gauge
Define Bevel?
Angled tip of a needle
Define hub?
the part of the venipuncture needle that fits into the syringe or Vacutainer adapter.
Define EDTA and its purpose ?
is an anticoagulant that prevents platelets from clumping and preserves the appearance of blood cells for microscope preparation.
Define Lancet?
Device used to perform a dermal puncture, which delivers a quick puncture to a predetermined depth.
Define Hematoma?
Is a large painful bruised area at the puncture site caused by blood leaking into the tissue, which causes the tissue around the puncture site to swell. Most common cause of hematoma formation during the draw are excessive probing with the needle to locate a vein, failure to insert the needle far enough into the vein and a needle that goes through the vein. Also can form after a draw if you fail to remove a tourniquet before removing the needle.