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When drawing medication from an ampule, the nurse knows to use which type of needle to prevent aspiration of tiny glass particles?

A.

glass needle

B.

insulin needle

C.

safety needle

D.

filter needle

Answer and Explanation

The Correct Answer is D

A. glass needle: Glass needles are not used in clinical practice for medication administration. The medication is delivered via a metal or plastic hub needle.

B. insulin needle: An insulin needle is thin and short and is used only for subcutaneous insulin injection. It is not designed to filter glass shards and would be too small for most ampule medications.

C. safety needle: A safety needle is a standard needle with a sheath or locking mechanism designed to cover the sharp tip after use to prevent needlestick injuries. While important for safety, it does not prevent glass particles from being drawn into the syringe from an ampule.

D. filter needle: A filter needle contains a small filter membrane (usually 5 microns) that prevents tiny, invisible fragments of glass, created when the neck of the ampule is broken, from being drawn up into the syringe and subsequently injected into the patient. The filter needle must be removed and replaced with a standard administration needle before injecting the patient.


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Related Questions

Correct Answer is B

Explanation

Step 1: Identify the ordered dose

  • The physician ordered 200 mg of ibuprofen PO daily.

Step 2: Convert the available concentration

  • Available: 125 mg per teaspoon (tsp).
  • 1 tsp = 5 mL.
  • So, 125 mg ÷ 5 mL = 25 mg per mL.

Step 3: Calculate the volume needed

  • Ordered dose = 200 mg.
  • Concentration = 25 mg per mL.
  • Volume = 200 ÷ 25 = 8 mL.

Step 4: Match to the closest option

  • Correct answer: 8 mL/day.

Correct Answer is B

Explanation

A. Intravenous:While Heparin canbe administered intravenously (IV) for immediate therapeutic effect (e.g., treating an active clot), the term "injection" in a post-operative context typically refers to prophylactic low-dose administration. Furthermore, compared to the other options, the specific distinction nursing students must know is that Heparin is never given IM.

B. Subcutaneous:Heparin is administered into the subcutaneous tissue (fat), usually of the abdomen. This allows for slow, sustained absorption to prevent Deep Vein Thrombosis (DVT). The abdomen is the preferred site to minimize muscle involvement and bruising.

C. Intradermal:Intradermal injections deposit medication just under the epidermis (e.g., TB skin tests). This route has poor absorption and holds very little volume, making it unsuitable for anticoagulants.

D. Intramuscular:Intramuscular (IM) administration of Heparin is contraindicated. Because Heparin prevents clotting, injecting it deep into vascular muscle tissue can cause a hematoma (a large, painful collection of blood) and potential muscle necrosis.

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