hw quiz 8910 Flashcards
3 types of blood specimens used for analysis
whole blood , serum and plasma
how long should a tourniquet stay on for during venipuncture?
1 min
explain the purpose of the BT
measures the length of time required for bleeding to stop after an incision is made
3 veins in the antecubital area suitable for venipuncture
median cubital,cephalic, and basilic
which finger is most widley used for capillary collection
ring finger
the larger the gauge number , the larger the lumen diameter
false
largest needle and used for blood donation
16
explain the purpose of thixotropic gel in collection tube
prevents the plasma from being contaminated by potassium released by red blood cells
how should a tube be labeled
must have pts. name,id number, date and time of collection and your initials or id numbers
3 types of needles in venipuncture
multisample (straight) ,syringe, and butterflies/ winged infusion sets
most common antiseptic used in routine venipuncture is bleach
false
define sps and explain what it is used for ?
used for cultures because it inhibits certain immune system components that could otherwise destroy Bloodbrone bacteria and neutralizes antibiotics that the pt, may be taking
tourniquet must be removed b4 the needle is removed to prevent a hematoma
true
define hemoconcertration
an increase in the ratio of formed elements to plasma caused by leaving the tourniquet on too tight
small red spots on the skin are referred to as ?
petechiae
list 5 things a pt. label or requestion must have on them
- pt. demographics
2.test status - name or code of physician making the request
4.test requested - hospital ID #
how frequently is the blood wicked during a bt test
every 30 seconds
list 5 equipment used in venipuncture
1.sharps container
2. antiseptic cleaning solution
3.needles straight or butterfly
4.tourniquets
5. collection tubes
name 2 antiseptics used in routine venipuncture
70% isopropyl alcohol and iodine swabs
at what age are heel sticks preferred to finger sticks
under the age of one
good candidates for dermal collection include pt.s who….
are obese and required frequent collection
4 parts of needle
Hub- needle attaches to the collecting tube or syringe at its hub
2.point-provides smooth entry into the skin
3.bevel- eases the shaft into the skin and prevents the needle from coring out a plug of tissue
4.shaft-both lenght and gauge
anticoagulant tubes should be
inverted gently and repeatedly after blood collection
what angle should a venipuncture needle penetrate skin?
15-30 degrees
2 sites commonly used for adult capillary collection
palmar surface of the middle and ring finger
