The nurse is providing care for a client with a recent transverse colostomy. Which observation requires immediate notification of the primary health care provider?

Choice A Reason: This is a correct choice. Trying to avoid scratching is an advice that the nurse will provide to the client, as it prevents further damage and infection of the skin. Scratching can break the skin barrier and introduce bacteria or fungi into the wound, leading to inflammation and complications.

Choice B Reason: This is a correct choice. Applying a moist cool compress is an advice that the nurse will provide to the client, as it soothes and relieves itching and swelling. A moist cool compress can reduce inflammation and histamine release, which are responsible for allergic symptoms.

Choice C Reason: This is an incorrect choice. Using alcohol to cleanse the area is not an advice that the nurse will provide to the client, as it irritates and dries out the skin. Alcohol can strip away the natural oils and moisture from the skin, making it more prone to cracking and itching.

Choice D Reason: This is an incorrect choice. Using a wooden stick to scratch lesions is not an advice that the nurse will provide to the client, as it causes more harm than good. A wooden stick can injure or infect the skin, as well as spread the allergen or irritant to other areas.

Choice E Reason: This is a correct choice. Avoiding hot air is an advice that the nurse will provide to the client, as it aggravates itching and inflammation. Hot air can increase blood flow and histamine release, which are responsible for allergic symptoms. The client should also avoid hot water or showers, as they can have the same effect.

Choice A Reason: Culture is not a diagnostic test that uses an ultraviolet light source, but a laboratory test that involves growing microorganisms from a sample of body fluid or tissue. Culture can help identify the type and sensitivity of the infection-causing agent.

Choice B Reason: KOH is not a diagnostic test that uses an ultraviolet light source, but a chemical test that involves applying potassium hydroxide to a sample of skin, hair, or nail. KOH can help diagnose fungal infections by dissolving the keratin and revealing the fungal elements under a microscope.

Choice C Reason: Diascopy is not a diagnostic test that uses an ultraviolet light source, but a physical test that involves applying pressure to a lesion with a glass slide or lens. Diascopy can help differentiate between blanchable and non-blanchable lesions, such as erythema or petechiae.

Choice D Reason: Wood's is a diagnostic test that uses an ultraviolet light source, also known as a Wood's lamp or black light. Wood's can help observe color changes to the skin that are not visible under normal light, such as fluorescence or hypopigmentation. Wood's can help diagnose conditions such as tinea capitis, vitiligo, or erythrasma.