Leading Causes of Death and Health Screenings

Core Concepts

Levels of prevention

• Primary prevention stops disease before it starts: immunizations, healthy eating, physical activity, tobacco cessation, seat belts.
• Secondary prevention finds disease early, before symptoms: screening tests like blood pressure checks, Pap tests, and mammography.
• Tertiary prevention limits the damage of established disease: treatment, rehabilitation, and complication management.
• Screening belongs to secondary prevention — a distinction exam questions love.

Leading causes of death in perspective

• Overall for women in the U.S.: heart disease and cancer lead; stroke, chronic lower respiratory disease, Alzheimer's disease, and diabetes follow, with unintentional injuries and COVID-19 also appearing in the top ranks in recent years.
• Reproductive-age people: unintentional injuries, cancer, and heart disease rank high; pregnancy-related death is a smaller but devastating and largely preventable contributor, with significant racial disparities.
• The nursing takeaway: most of the top killers share modifiable risk factors — hypertension, cholesterol, tobacco, obesity, inactivity — which means prevention education targets the same levers over and over.

How screening works: the core principles

• Screening tests asymptomatic people to detect disease early; they are not diagnostic.
• Sensitivity is the test's ability to be positive when disease is present (few false negatives). Specificity is the ability to be negative when disease is absent (few false positives). There is always a trade-off — increasing one tends to decrease the other.
• False positives (test positive, no disease) cause anxiety and extra testing. False negatives (test negative, disease present) cause false reassurance. Both are inevitable in any imperfect test; the goal is to choose tests whose benefits outweigh these harms.
• A positive screening result is a reason for further evaluation, not a diagnosis. Conversely, a negative result does not guarantee freedom from disease.
• Screening is offered based on age, sex assigned at birth, and risk factors, following current national guidelines (e.g., USPSTF and professional organizations). Recommendations are revised as evidence evolves — nurses verify current guidance rather than treating fixed schedules as gospel.

Common screenings for people assigned female at birth

• Blood pressure — the most fundamental screen; hypertension is a leading contributor to heart disease, stroke, and pregnancy complications.
• Cholesterol and glucose — cardiovascular and metabolic risk markers.
• Cervical cancer screening (Pap and human papillomavirus testing) — detects precancerous changes.
• Breast cancer screening (mammography) — finds cancer earlier, when treatment is more effective.
• Colorectal cancer screening — several test options exist; the best one is the one the person completes.
• Bone density testing — assesses osteoporosis risk, especially after menopause.
• STI and HIV screening — routine for sexually active people; crucial in pregnancy.
• Depression and anxiety screening — including routine screening during and after pregnancy.
• Immunizations — influenza, Tdap (recommended in pregnancy), HPV, COVID-19, and others per current schedules.
• Exact ages, intervals, and methods come from current guidelines and vary with individual risk — check before quoting them.

The nurse's role in screening

The nurse takes the history and risk assessment that determine which screenings apply; explains each test's purpose, process, and limits; obtains consent; ensures privacy; schedules the test; documents results and ensures abnormal findings are followed up — the critical safety step; and addresses barriers like fear, cost, transportation, and language. For preference-sensitive screenings, the nurse supports shared decision-making: balanced information, with the person making the choice that fits their values.

Common Confusions