Which of the following lancet positions should a phlebotomist recognize as part of the aseptic technique protocol?
Perpendicular to the fingerprint grooves
Parallel to the nail bed
Along the lateral portion of the first digit
Along the medial portion of the fifth digit
The Correct Answer is A
Choice A reason:
When performing a capillary blood collection, such as a fingerstick, the lancet should be positioned perpendicular to the fingerprint grooves. This orientation helps to ensure that the incision is made across the ridges of the fingerprint, which can facilitate a better blood flow and make it easier to collect an adequate sample without needing to squeeze the finger excessively, which could hemolyze the sample.
Choice B reason:
Positioning the lancet parallel to the nail bed is not recommended because it can result in a cut that runs along the length of the fingerprint grooves, which may not bleed as freely and could also be more painful for the patient.
Choice C reason:
Using the lancet along the lateral portion of the first digit is not part of the standard aseptic technique protocol for capillary blood collection. The first digit, or thumb, has a pulse and should generally be avoided because it can be more sensitive and is more prone to bruising.
Choice D reason:
The medial portion of the fifth digit, or the little finger, is also not a recommended site for capillary blood collection with a lancet. The little finger is typically smaller and may not provide an adequate site for blood collection, and similar to the thumb, it can be more sensitive and prone to injury.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:
The date of specimen collection is crucial for a laboratory report as it provides the context for the test results. It helps in assessing the timeliness and relevance of the results, especially when monitoring conditions that can change rapidly over time.
Choice B reason:
While the phlebotomist's initials may be recorded as part of the internal process for tracking specimen collection, they are not typically included in the patient's laboratory report. The focus of the report is on the patient and the test results, rather than on the personnel who collected the sample.
Choice C reason:
Patient diagnosis is not usually included in a laboratory report because the purpose of the report is to provide test results that may inform a diagnosis. The diagnosis is made by the healthcare provider based on the test results, along with other clinical information.
Choice D reason:
Values of previous tests may be referenced in a patient's medical record but are not a required element on a laboratory report. Each report typically presents the results of the current tests only. Comparisons to previous values, if needed, are made by the healthcare provider.
Correct Answer is D
Explanation
Choice A reason:
Gastrin is a hormone that stimulates the secretion of gastric acid by the stomach. While it is a critical component in the digestive process, gastrin is not typically sensitive to light, and therefore, does not require protection from light during handling and transportation.
Choice B reason:
Ammonia testing involves measuring the amount of ammonia in the blood, which can indicate liver function and is used in the diagnosis of hepatic encephalopathy. Ammonia levels are not generally affected by light; thus, special precautions to protect from light are not necessary.
Choice C reason:
Pyruvate is a key intermediate in several metabolic pathways throughout the cell. Pyruvate itself is not considered photosensitive, and standard precautions for handling and transportation are sufficient to maintain its integrity.
Choice D reason:
Bilirubin is a breakdown product of red blood cells and is measured to evaluate liver function and to assess jaundice. Bilirubin is known to be photosensitive; exposure to light can cause it to break down, which can affect the accuracy of test results. Therefore, specimens for bilirubin testing must be protected from light during handling and transportation to ensure valid results.
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