Which of the following purposes is served by anchoring the selected vein for a venipuncture using a winged infusion set?
Eliminates the need for a tourniquet
Reduces the pain of needle insertion
Improves vein identification
Minimizes vein movement
The Correct Answer is D
Choice A Reason:
Anchoring the vein does not eliminate the need for a tourniquet. The tourniquet is applied to engorge the veins, making them more prominent and easier to puncture. Anchoring is a technique used after the tourniquet has already accomplished this task.
Choice B Reason:
While anchoring the vein can provide a more stable area for needle insertion, which might indirectly reduce pain, its primary purpose is not pain reduction. Pain during needle insertion is more directly influenced by the needle gauge, angle of insertion, and the phlebotomist's technique.
Choice C Reason:
Improving vein identification is not the direct purpose of anchoring. Vein identification is typically done visually and by palpation before the application of the tourniquet and before anchoring the vein. Anchoring is performed to stabilize the vein once it has been identified.
Choice D Reason:
The primary purpose of anchoring the vein is to minimize its movement during venipuncture. This is important because it helps prevent the needle from slipping out of or through the vein, which can cause discomfort and bruising, and may require another puncture attempt.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
The specimen source is critical information that must be included with a non-blood specimen delivered to the laboratory. It identifies the origin of the specimen, such as urine, cerebrospinal fluid, or a swab from a specific site. This information is essential for the laboratory to process and analyze the specimen appropriately.
Choice B reason:
While the specimen color may be noted for certain types of specimens, it is not a required piece of information for all non-blood specimens. Color can be an important characteristic for some analyses, but it is not as critical as the specimen source for laboratory processing.
Choice C reason:
Specimen temperature is not typically documented upon delivery to the laboratory unless the specimen requires temperature control during transport, such as certain microbiological cultures. In general, the temperature at the time of collection is not a standard requirement.
Choice D reason:
Specimen clarity might be relevant for specific tests, such as urine analysis, where clarity can indicate the presence of substances like proteins or crystals. However, it is not a universally required piece of information for all non-blood specimens.
Correct Answer is A
Explanation
Choice A Reason:
Proper hand hygiene is one of the most effective measures to prevent the spread of infections within health care settings. By thoroughly cleaning hands, phlebotomists and other health care workers can significantly reduce the transmission of pathogens that can lead to health care-associated infections (HAIs). These infections are a major cause of morbidity and mortality among hospitalized patients and can be prevented by adhering to strict hand hygiene protocols.
Choice B Reason:
While hand hygiene is crucial for preventing contamination and infection, it does not directly increase the accuracy of laboratory results. The accuracy of laboratory results is more dependent on the proper collection, handling, and processing of specimens, as well as the precision of the testing equipment and methodologies used.
Choice C Reason:
Good hand hygiene can help decrease the rejection of laboratory specimens by preventing contamination. Contaminated specimens can lead to inaccurate results and may need to be recollected, which is inconvenient for the patient and can delay diagnosis and treatment. However, the primary outcome of proper hand hygiene is the prevention of HAIs, rather than the reduction of specimen rejection.
Choice D Reason:
Proper hand hygiene leads to a decrease, not an increase, in the potential sources of pathogens. By effectively removing germs from the hands, the risk of transmitting infectious agents is minimized. This is essential in a health care setting where patients may be vulnerable to infections due to weakened immune systems or open wounds.
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