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Which of the following techniques should a medical assistant use when inserting a needle for venipuncture?

A.

Bevel up with a 45° angle

B.

Bevel down with a 45° angle

C.

Bevel up with a 15° angle

D.

Bevel down with a 15° angle

Answer and Explanation

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.
 


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Related Questions

Correct Answer is C

Explanation

A. Wash visibly-soiled hands for a minimum of 10 seconds with warm water. Hand hygiene guidelines recommend washing visibly soiled hands for at least 20 seconds, not 10 seconds, with soap and water.
B. Use alcohol-based hand sanitizers that contain 50% alcohol. Alcohol-based hand sanitizers should contain at least 60-70% alcohol to be effective in killing most pathogens.
C. Keep natural nail tips no longer than 1/4 inch. Keeping natural nail tips no longer than 1/4 inch helps prevent the accumulation of pathogens and is recommended by hand hygiene guidelines.
D. Clean artificial nails with an orange stick. Artificial nails are not recommended in healthcare settings because they can harbor pathogens and are difficult to clean effectively.

Correct Answer is A

Explanation

A. Stress test: A stress test, or exercise stress test, involves monitoring the heart's activity with an EKG while the patient exercises on a treadmill or stationary bike. This test assesses how the heart performs under physical stress.
B. Holter monitor: A Holter monitor is a portable EKG device worn by the patient for 24-48 hours to continuously record heart activity in their daily life, not during exercise.
C. Echocardiogram: An echocardiogram uses ultrasound to visualize the heart's structures and is not performed while the patient is exercising.
D. Cardiac event monitor: A cardiac event monitor is used to record heart activity when the patient experiences symptoms, typically worn for weeks to months, and is not specifically for exercise testing.

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