Chapter 3: Vacuum Tubes Flashcards
Vacuum collection tubes (evaluation tubes or Vacutainer) are break-resistant plastic tubes that are sealed with?
A partial vacuum inside by rubber stoppers or twist-off closures.
What happens once the vacuum collection tubes are connected to the vevnipuncute needle inside the plastic holder?
The vacuum pulls blood from the vein into the collection tube.
The tubes are designed to?
Fill with a predetermined volume of blood by vacuum.
Tubes come with plain or substances called additives that are put into the tubes during manufacturing and are necessary for?
Different blood tests.
Most tubes contain additives called?
Anticoagulants to prevent clotting of the blood.
Anticoagulants already in the tubes are in the precise amount needed to?
Mix with the amount of blood that will fill the tube.
The rubber stoppers are color coded according to?
The additive that the tube contains.
Does tubes with additives must be thoroughly mixed?
Yes.
Erroneous test results may be obtained when the blood is not?
Thoroughly mixed with the additive.
What happens if the tube is shake?
Result in hemolysis.
How should the tube be mixed with the additive?
Gently inverting the tube three to eight times.
What does Inversion mean?
Turning the vacuum tube upside down and back.
What happens if the tube is not completely full to the portion of blood to chemical additive?
The result may not be accurate.
