Which of the following techniques should a medical assistant use when inserting a needle for venipuncture?
Bevel up with a 45° angle
Bevel down with a 45° angle
Bevel up with a 15° angle
Bevel down with a 15° angle
The Correct Answer is C
A. Bevel up with a 45° angle: A 45° angle is too steep for venipuncture; this angle is typically used for intramuscular injections.
B. Bevel down with a 45° angle: Bevel down is incorrect for venipuncture as it increases the risk of the needle piercing through the vein.
C. Bevel up with a 15° angle: This is the correct technique for venipuncture. The needle should be inserted at a 15° to 30° angle, with the bevel facing up to ensure smooth entry into the vein and minimize discomfort.
D. Bevel down with a 15° angle: Bevel down is not recommended for venipuncture because it can cause the needle to catch on the vein wall, increasing the risk of injury or complications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Culture tube: A culture tube is used for specific tests to collect microbiological samples, not routinely required for all venipunctures.
B. Biohazard container: A biohazard container is essential for the safe disposal of used needles and other sharp objects to prevent contamination and injury.
C. Sterile specimen cup: A sterile specimen cup is used for collecting urine samples or other specimens, not required for routine venipuncture.
D. Lancet: A lancet is used for capillary blood draws, not for routine venipuncture.
Correct Answer is C
Explanation
A. 99.6°F: This temperature is higher than expected for an axillary reading. Axillary temperatures are generally lower than oral temperatures.
B. 98.6°F: This reading matches the oral temperature. However, axillary temperatures are usually lower by approximately 1°F compared to oral temperatures.
C. 97.6°F: This is the correct answer because axillary temperatures tend to be about 1°F lower than oral temperatures.
D. 96.6°F: This reading is lower than typically expected for an axillary temperature and would indicate hypothermia, which is not expected if the oral temperature was normal.
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