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.
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Incorrect because swallowing the tablet with water would lead to slower absorption and a delayed onset of action. Nitroglycerin is rapidly absorbed through the oral mucosa, and swallowing it would route it through the digestive system, where it would be absorbed more slowly and less effectively.
Swallowing the tablet could also increase the risk of side effects, such as headache and flushing, due to the larger amount of the drug that would be absorbed systemically.
Choice B rationale:
Incorrect because crushing the tablet and dissolving it in water would also delay its absorption. This method would require the tablet to dissolve in the water before it could be absorbed through the oral mucosa, which would slow down the onset of action.
Crushing the tablet could also damage the medication and make it less effective.
Choice C rationale:
Incorrect because placing the tablet in the patient's mouth next to the cheek would not allow for optimal absorption. The oral mucosa under the tongue is more permeable than the cheek, so placing the tablet under the tongue allows for faster and more efficient absorption.
Placing the tablet in the cheek could also increase the risk of the patient accidentally swallowing it.
Choice D rationale:
Correct because placing the tablet under the patient's tongue allows for rapid absorption and a quick onset of action. The sublingual route is the preferred method of administration for nitroglycerin because it allows the medication to bypass the digestive system and be absorbed directly into the bloodstream.
This method also allows for the patient to easily remove the tablet if they experience any side effects.
Correct Answer is A
Explanation
Choice A rationale:
Thick, creamy yellow discharge is a hallmark characteristic of purulent drainage. This type of drainage is commonly referred to as pus and is indicative of an infection within the wound. It is composed of white blood cells, dead bacteria, cellular debris, and inflammatory cells, giving it its characteristic opaque, thick, and yellowish appearance.
Purulent drainage is a significant clinical finding that requires prompt attention and intervention. Early identification and management of wound infections can prevent complications such as abscess formation, cellulitis, sepsis, and delayed wound healing.
Accurate documentation of purulent drainage is essential for communication among healthcare providers, monitoring wound progress, and guiding treatment decisions.
Choice B rationale:
Serosanguineous drainage is a mixture of serous fluid (clear, thin, and watery) and blood. It often appears pink or slightly red and is commonly observed in the early stages of wound healing or after dressing changes. While it may contain a small amount of blood, it lacks the thick, creamy consistency and yellow color that are characteristic of purulent drainage.
Choice C rationale:
Serous drainage is clear, thin, and watery, resembling plasma. It is a normal part of the wound healing process and is often seen in the early inflammatory stage. It does not contain the thick consistency or yellow coloration that are indicative of purulent drainage.
Choice D rationale:
Sanguineous drainage is composed primarily of fresh blood. It is bright red in color and typically indicates active bleeding within the wound. It does not exhibit the thick, creamy consistency or yellow hue that are characteristic of purulent drainage.
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