Community and Public Health Nursing
Community and Public Health Nursing tests population-focused care, prevention levels, epidemiology, screening, home visiting, cultural safety, and disaster response. The exam shifts the focus from one patient to a group, community, or system.
Core rules and concepts
- Levels of prevention. Primary prevention acts before disease: immunization, water fluoridation, health education, seatbelt laws. Secondary prevention detects early disease: screening, contact tracing, Pap tests. Tertiary prevention limits disability: rehabilitation, support groups, chronic disease self-management.
- Epidemiology. Incidence is new cases over a period; prevalence is all existing cases at a point or period. Attack rate is new cases divided by the population at risk. Relative risk compares disease risk in exposed versus unexposed groups. An outbreak investigation identifies cases, defines the problem, generates hypotheses, and implements control.
- Screening and reporting. Screen only when the condition is important, detectable early, treatable, and the test is acceptable and valid. Report notifiable diseases according to public health law.
- Home visiting. Assess safety before entering, use a windshield survey, and build trust. Assess family strengths, housing, food access, and social determinants.
- Disaster triage. Mass-casualty triage prioritizes the greatest good for the greatest number, not first-come-first-served. START uses respirations, perfusion, and mental status to tag patients.
- Cultural and community partnership. Engage community leaders, use interpreters, and adapt education to health literacy.
Worked example
A community reports a cluster of measles cases. Primary prevention is vaccination of susceptible children and adults. Secondary prevention is identifying exposed contacts and offering post-exposure prophylaxis or early isolation. Tertiary prevention is managing complications such as pneumonia. The nurse should also report cases and support isolation, not only treat individual patients.
Traps that cost marks
- Confusing incidence with prevalence.
- Calling a screening test diagnostic.
- Planning care for a community without community input.
- Using individual-focused priorities in a mass-casualty incident.