Which of the following needles should a phlebotomist use for a venipuncture using a winged infusion set and a 5 mL syringe?
23-gauge
18-gauge
25-gauge
27-gauge
The Correct Answer is A
Choice A reason:
A 23-gauge needle is commonly used for venipuncture with a winged infusion set and a small volume syringe like a 5 mL syringe. This size provides a balance between patient comfort and the ease of drawing blood without causing hemolysis or excessive damage to blood cells. It is large enough to allow blood to flow easily into the syringe but small enough to minimize discomfort and the risk of bruising.
Choice B reason:
An 18-gauge needle is quite large and is typically used for situations requiring rapid administration of fluids or for blood donation where larger volumes are collected quickly. It is not ideal for a standard venipuncture, especially with a small syringe, as it can cause more pain and increase the risk of bruising.
Choice C reason:
A 25-gauge needle is on the smaller side and may be used for patients with very fragile veins or for pediatric patients. However, it may not be the best choice for a 5 mL syringe as it could make the blood draw process slower and more difficult, potentially leading to clotting in the needle or syringe.
Choice D reason:
A 27-gauge needle is very small and is typically used for subcutaneous injections, such as insulin injections, rather than for venipuncture. It would be too small for an efficient blood draw with a 5 mL syringe, as it would likely cause the blood to hemolyze or clot before the draw is completed.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:
A hair cap is used to prevent contamination from the hair, but it is not specifically designed to protect against body fluid splashes. While it is a part of personal protective equipment (PPE), it does not provide coverage for the areas most likely to be exposed to splashes during phlebotomy procedures.
Choice B reason:
A gown is the appropriate choice for protection against body fluid splashes. It covers a significant portion of the body and is designed to prevent fluids from reaching the phlebotomist's skin or undergarments, which is essential when there is a risk of splashes during procedures like venipuncture.
Choice C reason:
Shoe covers protect the feet from contamination, but they are not typically necessary for phlebotomy unless there is a significant risk of large fluid spills on the floor. They are more commonly used in operating rooms or during the cleaning of large spills.
Choice D reason:
Sterile gloves are a standard requirement for phlebotomy to maintain aseptic technique and prevent contamination. However, gloves alone do not provide sufficient protection against body fluid splashes that may reach other parts of the body.
Correct Answer is A
Explanation
Choice A reason:
Quality control measurements are essential for ensuring the accuracy and reliability of blood glucose monitors. According to best practices, all blood glucose monitors in use, regardless of their origin, should undergo daily quality control checks. This is to verify that the monitors are functioning correctly and providing accurate readings, which is crucial for patient care and treatment decisions.
Choice B reason:
Focusing only on the blood glucose monitors from the new office for daily quality control measurements is not sufficient. While new equipment may be less likely to have wear-and-tear issues that could affect performance, it is still subject to potential inaccuracies and must be included in the daily quality control routine.
Choice C reason:
Similarly, excluding the new monitors and only checking those from the old medical office would neglect the possibility of inaccuracies in the newer equipment. All monitors, irrespective of their age, can experience calibration drift or other issues that affect their performance.
Choice D reason:
Opting not to perform daily quality control measurements on any of the blood glucose monitors would be against the recommended guidelines and could lead to inaccurate blood glucose readings. This could have serious implications for patient health, particularly in the management of diabetes.
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