Chapter 5 Flashcards
What is the correct angle to hold the needle when performing a venipuncture/
20 degrees
What is a blood culture used for?
Bacteria
What are three things that must occur when an infant’ capillary blood is done?
- Circles on paper must be totally saturated. 2. The blood must be applied to only 1 side of paper w/o using capillary tubes. 3. Sample should be kept away from direct sunlight while drying.
Fecal specimen collection is used to detect what?
Colorectal Cancer.
Cystoscopy and biopsy is used to determine what?
Urinary bladder cancer.
Endoscopy is used to determine what?
Lower esophageal cancer and diverticulosis.
UTI’s are usually determined by what type of urine specimen?
A clean-catch midstream specimen.
Patients and MA’s need to be careful with collection of sputum samples for what reason?
The collection containers have a poisonous preservative inside them.
Tubes for culture and sensitivity tests may be kept at room temperature for up to how many hours?
72
Sealed or locked transfer bags are used for what?
Chain of custody.
Catheter
A hollow flexible tube inserted into a vessel or cavity to withdraw fluids.
Chemical reagent strip testing.
Urinalysis with plastic strips with chemical reagent pads on them.
Dermal puncture
AKA: Finger stick, heel stick, capillary draw or skin puncture. (Skin is lanced.)
EDTA
Ethylenediaminetetraacetic acid. An anticoagulant to keep blood specimens from clotting.
Enteric
Pertaining to the intestines.
Galactosemia
Lactose intolerance
Hematocrit
The percentage of blood that contains packaged red blood cells.
Occult blood
Blood that comes from a source that can not be immediately determined, like from an ulcer.
PKU
A metabolic genetic disorder from a deficiency in hepatic enzyme phenylalanine hydroxylase.
The correct “order of the draw” when filling collection tubes is what? (6)
- Blood cultures or sterile specimens. 2. Blue top tube. 3. Red top tube. 4. Green top tube. 5. Lavender top tube. ^. Grey.
What are the three complications that can occur if the tourniquet is not released after 1 minute in a venipuncture?
- Blood cells break and sample becomes hemolyzed (hemolysis). 2. Petechiae appear on skin. 3. hemoconcentration (forces fluids out of veins and into skin.)( Inaccurate results.)
Red topped tubes are used for:
Serum glucose, Elecrtolytes, and BUN (blood urea nitrogen)
Lavender top tubes are used for:
CBC (Complete blood count)
Blue topped tubes are used for:
Coagulation tests.
