A nurse is preparing a teaching plan for a client who has mucositis related to chemotherapy treatment. Which of the following instructions should the nurse include?

Nursing care for a client experiencing mucositis related to chemotherapy focuses on maintaining oral hygiene, minimizing trauma to the oral mucosa, and preventing infection. Mucositis commonly occurs due to the cytotoxic effects of chemotherapy on rapidly dividing epithelial cells lining the mouth, leading to pain, ulceration, and increased risk of infection. Careful oral care practices and avoidance of irritants are essential to promote healing and improve nutritional intake. Interventions should reduce mechanical irritation while maintaining a clean oral environment. Rationale: A. Flossing the teeth following each meal is not recommended during active mucositis because it can cause trauma and bleeding to already inflamed and fragile oral tissues. The damaged mucosa is highly susceptible to injury and infection, and flossing may worsen ulcerations. Gentle oral care techniques should be used instead until the mucositis resolves. B. Brushing teeth for 60 seconds twice daily may be too harsh depending on the severity of mucositis, especially if a regular toothbrush is used. Soft-bristled brushes and gentle technique are preferred, and frequency may be adjusted to reduce discomfort. The goal is to maintain hygiene while minimizing irritation to the compromised oral lining. C. Rinsing the mouth with hydrogen peroxide is not recommended because it can be cytotoxic to healing oral tissues and may delay mucosal recovery. It can also cause burning and further irritation in inflamed areas. Instead, saline or sodium bicarbonate rinses are preferred to gently cleanse the mouth and promote a neutral oral environment. D. Wearing dentures only during meals is appropriate because prolonged denture use can increase pressure, friction, and irritation on already inflamed mucosal surfaces. Removing dentures between meals allows the oral tissues to rest and reduces trauma, promoting healing. This also decreases the risk of pressure ulcers and secondary infection in the oral cavity.