How should a nurse obtain a culture of a patient’s wound?

Gently swab the center of the wound after irrigating with sterile saline.

Obtain a sample of the drainage from the dressing on the wound.

Use a sterile swab to collect a sample from the wound.

Collect a tissue sample from the wound during a surgical procedure.

Answer and Explanation

The Correct Answer is C

Choice A rationale:

Irrigating with sterile saline before swabbing can dilute the wound specimen and reduce the accuracy of the culture results. This is because the saline can wash away some of the bacteria that are present in the wound, making it more difficult to identify the specific bacteria that are causing the infection.

Additionally, swabbing the center of the wound may not collect a representative sample of the bacteria present, as bacteria can often be found in higher concentrations at the edges of the wound. This is because the edges of the wound are often where the tissue is most damaged and where the bacteria are able to enter the body more easily.

Choice B rationale:

Obtaining a sample of the drainage from the dressing on the wound may not be as accurate as collecting a sample directly from the wound. This is because the drainage may contain bacteria from the surrounding skin or environment, which could contaminate the culture results.

Additionally, the drainage may not contain a representative sample of the bacteria present in the wound, as some bacteria may not be able to drain out of the wound.

Choice D rationale:

Collecting a tissue sample from the wound during a surgical procedure is the most accurate way to obtain a culture. However, this is not always feasible or necessary.

It is often possible to obtain an accurate culture by collecting a sample from the wound using a sterile swab. This is a less invasive procedure and can be done at the bedside.

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Correct Answer is A

Explanation

The correct answer is E(None of the Above)

Rationale for E:

The options A, B, C, and D all describe actions or physiological measurements that do not directly indicate an allergic reaction.

Allergic reactions involve the immune system's response to a specific substance, whereas side effects are unintended reactions to a medication that are not caused by an immune response.

Key differences between allergic reactions and side effects:

Allergic reactions:

Typically occur rapidly after exposure to the allergen.

Can involve various body systems, including the skin (hives, itching, rash), respiratory system (wheezing, difficulty breathing, throat tightness), gastrointestinal system (nausea, vomiting, diarrhea), and cardiovascular system (low blood pressure, shock).

May be life-threatening in severe cases, such as anaphylaxis. Side effects:

Can occur at any time during medication use.

Usually more predictable and less severe than allergic reactions.

Often subside as the body adjusts to the medication or with dose adjustments. Important considerations for nurses:

Carefully assess patients for potential allergies before administering medications.

Monitor patients closely for any signs of allergic reactions or side effects after medication administration.

Promptly intervene if an allergic reaction is suspected, following established protocols and administering emergency medications as needed.

Document all observations and actions related to medication administration and patient responses.

A. The nurse should aspirate immediately prior to injecting the medication. B. The nurse should gently massage the injection site immediately afterward. C. The nurse should draw up the medication into a 1-mL syringe with a 32-gauge needle. D. The nurse should inject the medication into the soft tissue of the patient’s abdomen.

Correct Answer is D

Explanation

Choice A rationale:

Aspiration prior to injection of enoxaparin is not recommended. Key reasons for this contraindication include:

Absence of Large Blood Vessels in Subcutaneous Tissue: Enoxaparin is administered subcutaneously, targeting the fatty tissue layer beneath the skin. This tissue generally lacks large blood vessels, significantly reducing the risk of accidental intravascular injection. Aspiration, traditionally intended to prevent such occurrences, becomes unnecessary in this context.

Potential for Hematoma Formation: The act of aspiration itself can create a vacuum within the subcutaneous tissue, leading to trauma and bleeding at the injection site. This can result in hematoma formation, causing discomfort and potential interference with medication absorption.

No Evidence of Benefit: Research studies have not demonstrated any clear advantages of aspiration when administering subcutaneous enoxaparin injections. In fact, some studies have suggested a potential increase in bruising and bleeding associated with aspiration.

Manufacturer Guidelines: Enoxaparin manufacturers explicitly advise against aspiration in their product instructions, aligning with current evidence-based practices.

Choice B rationale:

Massaging the injection site after administering enoxaparin is also not recommended.

Rationale for this contraindication:

Accelerated Absorption: Massaging can increase local blood flow, potentially accelerating the absorption of enoxaparin. This could lead to higher-than-intended drug levels in the bloodstream, increasing the risk of bleeding complications.

Discomfort and Hematoma Risk: Similar to aspiration, massage can create mechanical stress on the injection site, potentially causing bruising, discomfort, or hematoma formation.

Choice C rationale:

While a 1-mL syringe with a 32-gauge needle is a suitable option for subcutaneous injections, it's not the only correct choice. Considerations for syringe and needle selection:

Needle Length: The needle should be short enough to ensure subcutaneous administration, typically ranging from 5/8 to 1 inch in length.

Syringe Size: The syringe size should accommodate the volume of medication being administered, providing clear visibility of the dose.

Patient Comfort: Smaller-gauge needles (like 32-gauge) are often preferred for subcutaneous injections as they tend to cause less discomfort. However, other factors, such as medication viscosity and patient preferences, may influence needle selection.

Choice D rationale:

The abdomen is the preferred injection site for enoxaparin due to several reasons:

Abundant Subcutaneous Tissue: The abdomen generally has a thicker layer of subcutaneous tissue, providing ample space for medication absorption and reducing the risk of intramuscular injection.

Ease of Access: The abdomen is often easily accessible for self-injection or administration by a caregiver, promoting patient comfort and convenience.

Reduced Pain: Subcutaneous injections in the abdomen are typically less painful compared to other potential sites like the arms or thighs.

Additional considerations for enoxaparin administration:

Rotate Injection Sites: To prevent tissue damage and promote consistent absorption, it's crucial to rotate injection sites within the recommended areas (abdomen, thighs, upper buttocks).

Monitor for Adverse Effects: Observe for any signs of bleeding, bruising, or allergic reactions following enoxaparin administration.

Adhere to Storage Guidelines: Store enoxaparin at room temperature and protect it from light to ensure its efficacy.

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How should a nurse obtain a culture of a patient’s wound?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse administers a medication to the patient. Which symptoms indicate that the patient is having an allergic reaction rather than a side effect?

Correct Answer is A

Explanation

The nurse is preparing to administer 40 mg of enoxaparin subcutaneously to a patient. Which of the following techniques should the nurse use?

Correct Answer is D

Explanation

How should a nurse obtain a culture of a patient’s wound?

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