A nurse is caring for a 65-year-old patient with diabetes mellitus who developed oral candidiasis (thrush) with white patches and difficulty swallowing after a course of broad-spectrum antibiotics. Which nursing intervention should be implemented to prevent the spread of infection and promote healing?

• 1 Encourage the patient to use an alcohol-based mouthwash twice daily
• 2 Instruct the patient to brush teeth vigorously with a hard-bristled toothbrush
• 3 Teach the patient to rinse mouth with normal saline after meals and at bedtime ✓ 정답
• 4 Advise the patient to consume acidic foods and beverages to alter oral pH

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