Which of the following is a true statement about assistive devices to aid older adults with impaired mobility?

Choice A reason: Squamous cell carcinoma is a type of skin cancer that develops from the squamous cells that make up the outer layer of the skin. It usually appears as a scaly, red, or crusty patch or lump that may bleed or ulcerate. It is the second most common type of skin cancer, after basal cell carcinoma, but it is less common than melanoma.

Choice B reason: Actinic keratosis is a skin condition that causes rough, scaly, or crusty patches or spots on the skin that are usually caused by sun exposure. It is not a type of skin cancer, but it is considered a precancerous lesion, as it can sometimes develop into squamous cell carcinoma if left untreated.

Choice C reason: Kaposi sarcoma is a rare type of skin cancer that causes purple, red, or brown patches or nodules on the skin or mucous membranes. It is caused by a virus called human herpesvirus 8 (HHV-8), and it mainly affects people with weakened immune systems, such as those with HIV/AIDS or organ transplants.

Choice D reason: Melanoma is a type of skin cancer that develops from the melanocytes, the cells that produce the pigment melanin that gives the skin its color. It usually appears as a mole or a new or changing spot on the skin that may have an irregular shape, color, or border. It is the most common type of skin cancer, and also the most serious, as it can spread to other parts of the body if not detected and treated early.

Choice A reason: This is incorrect because providing antiseptic mouthwash (such as Listerine) for the patient can worsen xerostomia, or dry mouth. Antiseptic mouthwash can contain alcohol, which can dry out the oral mucosa and reduce saliva production. Saliva is important for lubricating the mouth, preventing infections, and facilitating chewing and swallowing. Therefore, antiseptic mouthwash should be avoided or used sparingly in patients with xerostomia.

Choice B reason: This is correct because encouraging the patient to brush and floss teeth regularly can help prevent dental caries, gingivitis, and periodontitis, which are common complications of xerostomia. Xerostomia can increase the risk of oral infections and tooth decay, as saliva helps wash away food particles, bacteria, and plaque. Therefore, oral hygiene is essential for patients with xerostomia.

Choice C reason: This is correct because encouraging the patient to drink water frequently can help moisten the mouth and relieve the discomfort of xerostomia. Water can also help flush out food debris and bacteria, and prevent dehydration, which can exacerbate xerostomia. Therefore, water intake is beneficial for patients with xerostomia.

Choice D reason: This is correct because providing saliva substitutes can help mimic the functions of natural saliva and improve the symptoms of xerostomia. Saliva substitutes are artificial saliva products that contain water, electrolytes, and lubricants, such as glycerin, carboxymethylcellulose, or xylitol. They can be applied as sprays, gels, rinses, or lozenges, and can help lubricate the mouth, prevent infections, and facilitate chewing and swallowing. Therefore, saliva substitutes are useful for patients with xerostomia.