collection methods

Question 1

what is the safest method of collection

Answer 1

vacutainer method or vacuum (evacuated tube)

Question 2

what does vacutainer method involve

Answer 2

tube, double sided needle, and a plastic holder

Question 3

how does vacutainer method work

Answer 3

blood flows directly into tube which limits contact of blood, blood stops on own, tube has fill line.

Question 4

before removing needle make sure

Answer 4

tube is full

Question 5

When is butterfly method used

Answer 5

when patient has fragile,or small veins (pg 58)

Question 6

when patients veins are bigger use a

Answer 6

syringe

Question 7

syringe and hypodermic needle

Answer 7

-syringe and hypodermic needle
-When using syringe always break seal by pulling slightly back on the plunger
-Make sure it has no air before inserting it into vein
-Always use a transfer device to transfer the blood from the syringe to the tubes

Question 8

vacutainer and syringe gauge are

Answer 8

21-22

Question 9

butterfly gauge

Answer 9

23 guage

Question 10

higher the guage

Answer 10

smaller the needle

Question 11

what should you always do in front of the patient

Answer 11

open all needles and syringes

Question 12

What should the bevel always be when performing a venipuncture in antecubital region

Answer 12

always be up

Question 13

what angle should u insert needle

Answer 13

15-30 degrees; deeper vein greater the angle, do not exceed more than 30 degrees

Question 14

if the needle is inserted more than 30 degrees what happens

Answer 14

nerve injury

Question 15

how many degrees should u insert needle in dorsal hand blood collection

Answer 15

10 degrees; shallower angle because of the amount of tendons and nerves in hand

Question 16

insertion of venipuncture should be

Answer 16

quick and smooth

Question 17

leaking around tissues

Answer 17

hematoma

Question 18

additives/ anticoagulants

Answer 18

preserve life and metabolism of rbc

Question 19

additives cannot

Answer 19

be substituted for one another

Question 20

types of anticoagulants

Answer 20

oxalates, citrates,edta, heparin

Question 21

oxalates, citrates, edta, heparin

Answer 21

remove calcium and forming; cannot be used in calcium determination

Question 22

what are frequently used in coagulation blood studies

Answer 22

citrates

Question 23

What is edta

Answer 23

used for platelet counts and platelet function tests

Question 24

heparin is used in

Answer 24

is used in assays such as ammonia and plasma hemoglobin, prevents blood clotting by inactivating blood clotting chemicals:thrombin and factor x

Question 25

Why is order of draw so important

Answer 25

false elevations can occur if u dont follow order of dra

Question 26

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