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The patient/client is to receive Humulin R 15 units subcutaneously daily at 7:30 am. Which syringe should the nurse use to administer the medication?

A.

Insulin 100 unit

B.

1mL

C.

Insulin 50 unit

D.

3mL

Answer and Explanation

The Correct Answer is C

A. Insulin 100 unit: A 100-unit insulin syringe holds up to 100 units (1 mL). While it can technically hold 15 units, it is calibrated in 2-unit increments and is not the most precise option for small doses like 15 units.

B. 1-ML: A 1-mL syringe (often a Tuberculin or TB syringe) is calibrated in milliliters (mL) and hundredths of a milliliter (0.01 mL). Since the order is in units, a TB syringe is only appropriate if a conversion table is used, which is highly discouraged and error-prone for insulin administration.

C. Insulin 50 unit: A 50-unit insulin syringe holds up to 50 units (0.5 mL) and is calibrated in 1-unit increments. It provides the highest level of accuracy for measuring small insulin doses, such as the ordered 15 units, making it the preferred choice over a 100-unit syringe.

D. 3mL: A 3-mL syringe is far too large and is calibrated in milliliters (0.1 mL increments). It cannot accurately measure a dose as small as 15 units of insulin.


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Related Questions

Correct Answer is ["A","D","E"]

Explanation

A. Deltoid:The deltoid (upper arm) is a standard IM site for small volumes usually 1 mL or less. It is far removed from the sciatic nerve.

B. Ventral aspect of forearm:This site is used for Intradermal (ID) injections (like TB skin tests) or IV access, not for Intramuscular (IM) injections.

C. Dorsogluteal:This is the specific site the patient is complaining about. The dorsogluteal site (upper outer quadrant of the buttock) poses a significant risk of injury to the sciatic nerve and superior gluteal artery. It is generally no longer recommended for use due to these risks.

D. Ventrogluteal:The ventrogluteal site (hip) involves the gluteus medius and minimus muscles. It is the safest and preferred site for deep IM injections because it is free of major nerves and blood vessels.

E. Vastus Lateralis:The vastus lateralis (side of the thigh) is a large, well-developed muscle that is safe for IM injections and distant from the sciatic nerve.

Correct Answer is D

Explanation

Step 1: Convert ounces to milliliters

  • 1 ounce = 30 mL.
  • 2 ounces = 2 × 30 mL = 60 mL.

Step 2: Compare with available supply

  • Each container = 30 mL.
  • Ordered dose = 60 mL.
  • Number of containers = 60 ÷ 30 = 2 containers.

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