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 C

Explanation

Choice A rationale:

Incorrect. Patients who develop tolerance to a medication do not typically maintain a stable dose over time. Instead, they often require increasing doses to achieve the same effect.

Physiological adaptation: The body adapts to the presence of the medication, leading to a decreased response over time. This adaptation can occur at various levels, including receptor downregulation, changes in enzyme activity, or alterations in neurotransmitter release.

Individual variability: The rate and extent of tolerance development vary significantly among individuals, influenced by factors such as genetics, age, overall health, and medication type.

Choice B rationale:

Incorrect. Impaired liver or kidney function can affect drug metabolism and elimination, but this is not the primary mechanism of tolerance.

Metabolic impairment: Liver or kidney dysfunction can lead to drug accumulation in the body, potentially increasing the risk of side effects or toxicity. However, this does not necessarily cause tolerance, which is a specific phenomenon of decreased responsiveness to the medication's effects.

Choice C rationale:

Correct. This statement accurately describes the hallmark characteristic of tolerance.

Dose escalation: As tolerance develops, patients often require higher doses of the medication to achieve the same therapeutic effect. This can lead to a cycle of increasing doses and potential risks of adverse effects.

Clinical implications: Tolerance is a significant consideration in medication management, as it can affect treatment efficacy, adherence, and the risk of side effects.

Choice D rationale:

Incorrect. Tolerance can develop even when patients adhere strictly to their prescribed medication regimen. It is a physiological phenomenon that is not solely dependent on patient behavior.

Adherence vs. tolerance: While non-adherence can contribute to treatment failure, it is not the underlying cause of tolerance.

A. The patient’s skin will be free of redness or breakdown when surgery is complete. B. The patient’s privacy and dignity will be maintained throughout the procedure. C. The patient’s bony prominences will be padded with pressure-reducing cushions. D. The patient’s skin will be assessed prior to surgery to identify areas at risk.

Correct Answer is A

Explanation

Choice A rationale:

Directly addresses the primary goal of preventing perioperative positioning injury: The absence of redness or breakdown in the skin is the most definitive indicator that the patient has not sustained any skin or tissue damage as a result of prolonged immobilization during surgery.

Focuses on the patient outcome, not just interventions: While interventions such as padding bony prominences and assessing skin prior to surgery are important, they are means to achieve the ultimate goal of preventing skin injury. This outcome statement directly measures the success of those interventions.

Aligns with best practices for pressure injury prevention: The National Pressure Injury Advisory Panel (NPIAP) and other expert organizations emphasize the importance of setting goals that focus on maintaining skin integrity and preventing injury.

Choice B rationale:

Addresses a crucial aspect of patient care, but not directly related to positioning injury: Maintaining privacy and dignity is essential for all patients, but it does not specifically address the risk of skin breakdown from prolonged immobilization.

Not a measurable outcome for positioning injury: It is difficult to objectively assess whether a patient's privacy and dignity have been maintained, making it less suitable as an outcome statement for this particular diagnosis.

Choice C rationale:

Describes an important intervention, but not a patient outcome: Padding bony prominences is a key strategy to reduce pressure and prevent skin injury. However, it is an action taken by the nurse, not a measurable outcome that reflects the patient's status.

Does not guarantee prevention of injury: Even with appropriate padding, patients can still develop pressure injuries if other risk factors are present or if repositioning is not performed adequately.

Choice D rationale:

Represents an essential assessment step, but not a final outcome: Assessing the skin prior to surgery is important for identifying areas that are at increased risk of breakdown. However, it is a preliminary step in the prevention process, not the ultimate goal.

Does not ensure prevention of injury: Identifying at-risk areas is helpful for targeting interventions, but it does not guarantee that skin breakdown will not occur.

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

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which statement accurately describes patient tolerance to medications?

Correct Answer is C

Explanation

A nurse is caring for a patient who will be undergoing a surgical procedure that will take 7 to 8 hours to complete.What is the appropriate outcome for the diagnosis of perioperative positioning injury related to prolonged immobilization?

Correct Answer is A

Explanation

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