According to the CLSI standard, a phlebotomist must attempt to locate which of the following veins on both arms before considering other veins?
Median cubital vein
Basilic vein
Cephalic vein
Veins on the underside of the wrist
The Correct Answer is A
Choice A Reason:
The median cubital vein is often the first choice for venipuncture due to its size and accessibility. It is located in the antecubital fossa and is usually well anchored by surrounding tissues, which makes it less likely to roll during needle insertion. This vein is also less painful for patients when punctured due to its location and the type of surrounding tissue.
Choice B Reason:
The basilic vein is another option for venipuncture, but it is not typically the first choice. It is located on the medial aspect (inner side) of the arm and is more prone to rolling and injury because it is not as well anchored as the median cubital vein. Additionally, the basilic vein is located near nerves and arteries, which increases the risk of complications during venipuncture.
Choice C Reason:
The cephalic vein runs along the lateral aspect (outer side) of the arm and can be used for venipuncture. However, it is often more difficult to locate and has a tendency to roll, which can make venipuncture more challenging. It is usually considered after the median cubital vein.
Choice D Reason:
Veins on the underside of the wrist should generally be avoided for routine venipuncture because they are often smaller, can be more painful due to the proximity to nerves and tendons, and have a higher risk of complications. These veins are considered only when other sites are not available or are unsuitable for venipuncture.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason:
A patient's room number is not a unique identifier as it is subject to change. Patients may be moved to different rooms during their hospital stay, and room numbers are not specific to individuals.
Choice B reason:
A patient's bed label is also not a unique identifier. Like room numbers, bed labels can change if patients are moved within the hospital for various reasons, such as changes in their medical condition or room availability.
Choice C reason:
The patient's inpatient chart demographic information is the correct unique identifier to use. This typically includes the patient's name, date of birth, and a unique medical record number assigned by the healthcare facility. These details are specific to the individual and do not change, making them reliable for patient identification.
Choice D reason:
A patient's verbal confirmation alone is not sufficient as a unique identifier. While it is important to engage the patient in the identification process, verbal confirmation must be used in conjunction with other identifiers to ensure accuracy, as patients may be confused or unable to communicate effectively.
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.
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