A 3-year-old in preschool-rationale: during infancy and childhood, upper respiratory infections are common due to changes in developing respiratory systems. adolescents and young- and middle-adult individuals would suffer this problem only if their immune systems were compromised in any manner, or if they suffered from chronic illness.nursing process: assessmentclient need: health promotion and maintenancecognitive level: analysisstrategy: use nursing knowledge and the process of elimination to make a selection.