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 C
Explanation
Choice A Reason:
Notifying the provider about the error is an important step, but it does not correct the error in the patient's chart. Communication with the provider ensures that they are aware of the mistake and can make informed decisions regarding patient care. However, the physical correction of the documentation is also necessary to maintain accurate medical records.
Choice B Reason:
Asking an administrator to erase the error is not a recommended practice. Erasing or using correction fluid can make the chart appear tampered with, which can have legal implications. It is essential that the original entry remains visible to preserve the integrity of the medical record.
Choice C Reason:
Striking a line through the error and initialing is the correct method for correcting a written error in a patient's chart¹². This approach allows the original entry to remain legible, which is crucial for legal and clinical reasons. It also shows that the correction was made by an authorized individual, as the initials indicate who made the change.
Choice D Reason:
Erasing the error and entering the correct information is not an acceptable practice for the same reasons as choice B. It is important not to remove or conceal the original entry, as this could be considered falsifying medical records.
Correct Answer is B
Explanation
Choice A reason:
The BUN test measures the amount of urea nitrogen in the blood, which can indicate kidney function. Fasting is not typically required for a BUN test unless it is being conducted alongside other tests that may require fasting.
Choice B reason:
An HDL test is part of a lipid profile that measures the levels of good cholesterol in the blood. Fasting before a cholesterol test, including HDL, is often recommended to ensure accuracy, although recent guidelines have changed, allowing for nonfasting cholesterol testing in certain individuals.
Choice C reason:
An ABG test measures oxygen and carbon dioxide levels in the blood and assesses the body's acid-base balance. Preparation for an ABG test does not typically require fasting, but patients may need to stop supplemental oxygen before the test to get accurate measurements.
Choice D reason:
A CBC test, or complete blood count, does not require fasting. It measures various factors of the blood, including red and white blood cells and platelets. Fasting is not necessary unless the CBC is part of a panel of tests that includes tests requiring fasting.
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