A school nurse is helping a special needs student with tube feeding during the lunch hour. Which of the following levels of prevention does this fall under?

The three classic levels of prevention help classify health interventions by their timing relative to disease or disability. Primary prevention aims to prevent a condition from occurring in the first place, such as immunizations or health education. Secondary prevention involves early detection and screening to halt disease progression, such as vision screening or hearing tests. Tertiary prevention focuses on managing an existing condition, minimizing complications, and maximizing function and quality of life — this is the level that applies here. A special needs student who requires tube feeding already has a diagnosed condition or disability; assisting with tube feeding during the lunch hour is directly supporting that student's nutritional management and ongoing health maintenance, which fits the definition of tertiary prevention. Quaternary prevention, a less commonly cited concept, refers to protecting patients from over-medicalization and unnecessary interventions, which is not applicable in this scenario. Because tube feeding is a therapeutic intervention aimed at managing an established health condition and preventing further decline, it is correctly classified as tertiary prevention.