Which of the following is the minimum required number of unique patient identifiers a phlebotomist should use prior to a blood draw?
One
Two
Three
Four
The Correct Answer is C
Choice A Reason:
Using only one patient identifier is not sufficient to ensure patient safety and accuracy in healthcare settings. It increases the risk of misidentification, which can lead to serious medical errors. Therefore, one identifier is not the standard practice for patient verification before a blood draw.
Choice B Reason:
While two identifiers are commonly used in many healthcare settings as a minimum requirement, they may not always provide enough differentiation, especially in larger facilities where patient names may be similar. Two identifiers are often the minimum standard, but they are not the most comprehensive approach.
Choice C Reason:
Three unique patient identifiers provide a more robust method for verifying a patient's identity, significantly reducing the likelihood of errors. According to the Clinical and Laboratory Standards Institute (CLSI), three identifiers are recommended to ensure the correct patient is being collected. This may include the patient's full name, date of birth, and medical record number or another unique identifier.
Choice D Reason:
While using four unique identifiers could further reduce the risk of patient misidentification, it is not typically required as the standard minimum. Three identifiers are generally considered adequate for most healthcare settings to ensure patient safety and proper identification.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
The left antecubital area is the correct site to perform venipuncture on a patient who has had a right-sided mastectomy. It is recommended to avoid the side of the mastectomy due to the risk of lymphedema and other complications associated with the removal of lymph nodes during the surgery. The left antecubital fossa, which is the area in front of the elbow, is a common site for venipuncture and is generally safe for use when the right side cannot be used.
Choice B reason:
The right cephalic vein should be avoided in a patient with a right-sided mastectomy. Venipuncture on the same side as the mastectomy can increase the risk of complications, including lymphedema, which is a condition characterized by swelling due to lymph fluid accumulation. Therefore, the right cephalic vein is not an appropriate choice.
Choice C reason:
The left femoral artery is not a venipuncture site; it is an arterial site. Venipuncture refers to accessing a vein, not an artery, for blood collection. Additionally, arterial puncture is a more invasive procedure typically reserved for arterial blood gas analysis and is not performed for routine venipuncture.
Choice D reason:
Similar to choice B, the right basilic vein should be avoided for venipuncture in a patient who has had a right-sided mastectomy. The basilic vein is located on the inner side of the arm and using it could pose the same risks as using the right cephalic vein, including the potential for lymphedema.
Correct Answer is B
Explanation
Choice A Reason:
Body temperature does not significantly affect serum cortisol levels and is not a factor that needs to be considered when planning to collect a cortisol specimen. Cortisol levels are regulated by the hypothalamic-pituitary-adrenal axis and not by body temperature.
Choice B Reason:
Time of day is a critical factor to consider when collecting a specimen for serum cortisol level measurement. Cortisol levels follow a diurnal pattern, peaking in the early morning hours and declining throughout the day, with the lowest levels typically occurring around midnight¹². This variation is known as the cortisol awakening response (CAR) and is important for accurately interpreting the results of the test.
Choice C Reason:
Alcohol consumption can affect cortisol levels; however, it is not typically a factor that a phlebotomist needs to consider immediately before specimen collection unless the patient is under the influence at the time of the test. Chronic alcohol use can lead to alterations in cortisol levels, but this is more of a consideration for the healthcare provider interpreting the results rather than the phlebotomist collecting the specimen.
Choice D Reason:
Prandial status, or the fed or fasting state of the patient, can influence cortisol levels, but it is not as significant a factor as the time of day. Cortisol levels can be slightly higher after eating, but this effect is generally considered minimal. The primary concern for prandial status would be if the cortisol test is being conducted alongside other tests that require fasting.
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