Chapter 10 Flashcards
Prior to performing a venipuncture, it is important to get information about whether or not the patient has eaten recently because
Laboratory tests can be affected by the ingestion of food and drink
Is a patient is obese, what special equipment, if any, can be used to improve the likelihood of a successful puncture
A large blood pressure cuff
When a patient has “difficult” veins, what strategies, if any, can be used to improve the likelihood of a successful venipuncture
All of the above
Arteries differ from veins in this way
Thicker vessel walls with a pulsating feel
During the venipuncture, the needle should be inserted at this angle to the skin
30 degrees or less
During the venipuncture procedure, what should the phlebotomist do after the needle is inserted and blood begins to flow
Release the tourniquet
When the evacuated tube method is used for venipuncture, select the correct order of collection for the following tubes: blood culture tubes, coagulation tube, and hematology tube. Choose the order of tubes by their color of closures.
Yellow blood culture tubes, blue, lavender
Information that is essential for labeling a patients specimen
The patients name and identification number, date and time of collection, the phlebotomists initials
If a patient is frail and has a tendency to faint, what equipment, if any, would be helpful in the specimen collection process
A recliner
If a patient has a bruise in the antecubital area of his right arm (his non dominant arm) what alternate sit should be considered
The antecubital area of the left arm
One reason for hematoma formation during a venipuncture is that the
Needle is partially inserted in the vein
If a venipuncture procedure is almost completed and suddenly you see hints of a hematoma beginning to form, you should
Discontinue the procedure and apply pressure with gauze
How many more times should a phlebotomist try to perform a venipuncture on a patient if he has failed once already
Once
When using the syringe method to collect a blood specimen, how is the blood added into additive and non additive tubes?
Using a syringe transfer device attached to the syringe, instead each tube into the device and allow the blood to flow freely
Specimen collection tube most commonly used for hematology tests
EDTA
Specimen collection tube most commonly used for hemostasis tests
Sodium citrate
Adding too much blood to a sodium citrate tube can cause
Shorter clotting time
Specimens may be rejected for a variety of reasons, most of which can be prevented by experience, professional phlebotomists. Identify one reason for specimen rejection that related to unnecessary, but excessive, mixing of the specimen
Specimen is hemolyzed
Specimen tubes should always be pre-labeled with patient information.
False
HIV, HBV, and HCV are bloodborne pathogens
True
TDM refers to thyroid disease measures
False
The preferred way to stop blood flow is to ask the patient to hold a cotton ball over the site until it stops
False
After a venipuncture on a one-year old child, be sure to give them a colorful bandage
False
Recapping needles after a venipuncture is acceptable in many cases
False