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mod c methods
collection methods
| Question | Answer |
|---|---|
| name the 3 methods for collecting blood | evacuated tube, syringe and butterfly |
| single draw and multidraw | two kinds of evacuated tube methods. |
| what method would you use if you required more than one test to be run from a patient | evacuated tube multidraw |
| the most common method used in venipuncture | evacuated tube |
| lavender tube | contains sodium or EDTA, prevents clotting. most common tests: CBC, hematology |
| light blue | coagulation studies, contains sodium citrate. prevents coagulation. **must fill completely ratio 9:1 |
| black | contains sodium citrate, ratio is 4:1. common test Westergren sedimentation rate |
| gray | contains anticoagulant and cell preservative. common for glucose testing, alcohol levels |
| green | contain -sodium heparin or ammonium heparin, lithium heparin. tests that require blood plasma |
| dark blue | chemically cleaned. anticoagulant free or contain the anticoagulant sodium heparin or disodium EDTA. toxicology studies, trace metal assays, nutritional analysis |
| brown | contain heparin and are chemically free and certified to contain less than 0.1ug/mL lead. |
| yellow | sterile, contains sodium polyanetholesufonate (SPS). used for microbiology studies. bacteria |
| red | plain tube. no anticoagulant or additives. used for serology tests, serum chem, blood bank |
| serum separator tubes have what in them | a gel-like substance that forms a barrier between the cells and serum on centrifugation |
| serum separator tube colors | red, gray or gold |
| this method is used to establish intravenous lines or to draw blood from small veins | butterfly method |
| this method is used in geriatric patients, or patients with small or weak veins taht might collapse under the pressure | syringe method |
| equipment that may be found in a collection cart/tray | disposable gloves, needles, sharps container, tourniquet, antiseptic, guaze, needleholder, evacuation tubes |
| the higher the gauge number of a needle..... | the smaller the diameter |
| what diameter needle should be used on children | 21-23 |
| what diameter needle should be used for adults | 20-22 & 1-1.5" long |
| what diameter need should be used for a unit of blood for transfusion | 17 |
| where should the tourniquet be placed | 3-4" above antecubital fossa |
| why do we swab the area with an antiseptic before venipuncture | reduce the risk of skin bacteria causing infection at the site of puncture and help prevent contamination of the sample |
| what do you use sterile gauze for | pressure after venipuncture and/or under a bandage |
| do needle holders need to be changed between patients | no, unless they have been contaminated |
| what are the sizes of an evacuation tube | 2-15ml |
| name the 5 most common evac tubes used | lavender (EDTA), light blue (sodium citrate), gold (SST), green (Lithium Heparin), red (no additive) |
Created by:
spicey
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