A nurse is preparing a patient for an arthroscopy of the knee.
Which patient statement indicates a need for further teaching?

Choice A rationale

Gasoline is a liquid hydrocarbon that can continue to damage the skin and be absorbed systemically if not removed immediately. Decontamination is the priority to stop the burning process and prevent further chemical injury to the client and exposure to healthcare staff. It involves removing saturated clothing and flushing the skin with water. This essential safety step must occur before other assessments or interventions to ensure the clinical environment remains safe for everyone.

Choice B rationale

Asking about the last meal is part of a secondary assessment, specifically for potential surgical intervention or intubation risks. While important for general anesthesia preparation, it does not address the immediate life safety threat posed by chemical contaminants on the body. In the hierarchy of trauma care, stopping the injury source through decontamination precedes gathering nutritional history. This information is valuable for preventing aspiration during later procedures but is not the primary safety concern.

Choice C rationale

Elevating the head of the bed is a standard intervention to reduce edema and improve respiratory excursion, especially in burn patients. However, this action is subordinate to the immediate need for decontamination in a chemical burn scenario. Respiratory support and positioning are part of the ABCs, but if the patient is still covered in gasoline, the chemical continues to destroy tissue. Decontamination is the unique priority here to stabilize the wound environment and prevent inhalation of fumes.

Choice D rationale

Determining the exact volume of gasoline encountered provides context for the severity of exposure but does not mitigate the current physical risk. While toxicological data is helpful for long term management, the immediate physical presence of the chemical on the skin is the emergency that requires action. Knowing the amount does not change the initial requirement for thorough irrigation and removal of the substance. Treatment focuses on clinical presentation and immediate neutralization of the causative agent.

Choice A rationale

Dry and itchy skin, or pruritus, is often associated with healing or chronic conditions like eczema and xerosis. While uncomfortable, it is not a primary indicator of an acute infectious process. Itching often results from the release of histamine during the inflammatory phase of wound healing or from a lack of sebaceous gland activity in damaged tissue. It does not typically signify the presence of pathogenic microorganisms requiring antibiotic therapy, though it can lead to secondary infections if the client scratches.

Choice B rationale

Increased pigmentation, or hyperpigmentation, usually occurs as a result of post inflammatory changes or chronic sun exposure. It is a sign of melanocyte activity in response to skin injury or inflammation but does not indicate an active infection. In some cases, it can be a normal part of the scarring process. Infection is more commonly associated with changes in color toward bright red or purple rather than a darkening of the skin's natural melanin or pigment.

Choice C rationale

Warmth and redness, also known as calor and rubor, are two of the classic cardinal signs of inflammation and infection. Increased blood flow to the site of injury occurs as the body delivers white blood cells to combat pathogens. If these signs spread beyond the immediate borders of a wound, it suggests cellulitis or a localized infectious process. This physiological response is triggered by chemical mediators like prostaglandins and kinins, which increase vascular permeability and vasodilation at the site.

Choice D rationale

The presence of hair follicles is a normal anatomical finding and generally indicates that the dermal layer is intact or regenerating effectively. Hair follicles are not associated with the pathology of infection. In fact, deep full thickness burns often destroy hair follicles, so their presence might actually suggest a more superficial injury. Their existence has no diagnostic value in determining whether a wound has been colonized or infected by bacteria, viruses, or fungi during the healing process.