Health Maintenance and Prevention

Health Maintenance and Prevention

Primary Prevention

Primary prevention focuses on removing or reducing risk factors associated with diseases. An example of primary prevention is the administration of immunizations to prevent infectious diseases. The goal is to prevent the onset of diseases before they occur by addressing potential risk factors and promoting healthy habits.

Secondary Prevention

Secondary prevention aims to promote the early detection of disease states so that timely intervention can take place. Examples of secondary prevention methods include:

  • Pap Smears: A test performed to screen for cervical cancer by detecting precancerous or cancerous cells in the cervix.

  • Chest X-rays: Imaging tests used to look for abnormalities in the lungs, such as tumors or infections, which can facilitate early diagnosis and treatment of respiratory conditions.

Tertiary Prevention

Tertiary prevention is aimed at limiting the impact of established diseases and improving the quality of life for patients who have already been diagnosed with a condition. Examples of tertiary prevention practices include various types of mastectomy:

  • Partial Masectomy: Surgical removal of a portion of breast tissue affected by cancer.

  • Radical Mastectomy: Removal of the entire breast along with some surrounding tissues.

  • Total Mastectomy: Complete removal of one breast, including breast tissue, some surrounding fat, and possibly lymph nodes.

  • Nipple-Sparing Mastectomy: Removal of breast tissue while preserving the nipple and surrounding skin, often implemented in cases where cancer is not present in the nipple area.

  • Modified Radical Mastectomy: A combination of total mastectomy with the removal of some lymph nodes from under the arm.

  • Partial Simple Mastectomy: Involves removing only the tumor and a small margin of surrounding tissue, preserving most of the breast.

Evidence-Based Recommendations

Understanding the grading of evidence-based recommendations is crucial in clinical practice. The grading system functions as follows:

  • A Recommendations: High certainty of substantial benefit; these services should be discussed with eligible patients and prioritized for implementation.

  • B Recommendations: Moderate certainty of moderate benefit; similar to 'A', these should also be prioritized for eligible patients.

  • C Recommendations: Insufficient evidence; lower priority should be given, and services need not be provided except for individual considerations favoring them.

  • D Recommendations: High certainty that there is no benefit or harm; their use should generally be discouraged unless unusual circumstances warrant.

  • I Recommendations: Insufficient evidence to determine net benefit; health professionals should help patients understand the uncertainty surrounding these services.

Criteria for Inclusion of Medical Conditions in Primary Care

Selecting medical conditions for inclusion in primary care is based on several criteria:

  • Burden of Suffering: Assess how much suffering the condition causes, which may include factors like death, disease, disability, discomfort, dissatisfaction, and destitution.

  • Quality of Screening Tests: Evaluate the effectiveness of screening tests based on:

    • Sensitivity: The test's ability to correctly identify those with the disease.

    • Specificity: The ability to correctly identify those without the disease.

    • Simplicity, Cost, Safety, and Acceptability: The test should be easy and cheap to perform with minimum discomfort to the patient.

  • Therapeutic Intervention for Primary and Tertiary Prevention: Determine how effective, safe, and cost-effective the interventions are at treating diseases once they are discovered.

  • Condition Treatment Post-Screening for Secondary Prevention: Assess the effectiveness of treatments when conditions are identified early.

Performance of Screening Tests

Effective screening tests should have:

  • Sensitivity: A high sensitivity indicates that the test will show positive results for most true cases of the disease.

  • Specificity: High specificity ensures that a negative result indicates a true absence of the disease, minimizing false positives.

  • Positive Predictive Value: The proportion of true positives among all positive results, which indicates reliability.

  • Attributes such as Simplicity and Cost: The ideal test should be quick, require minimal preparation from the patient, avoid special appointments, and be cost-effective.

Risks and Benefits of Screening

Screening can result in both benefits and harms:

Harms of Screening:

  • Anxiety from false-positive results.

  • Harm from subsequent diagnostic treatments following a positive screening test.

  • Overdiagnosis: Identifying conditions that may not have progressed clinically, leading to unnecessary treatment.

  • Cost: Financial implications associated with screening procedures.
    The benefit of screening, especially for cancer, may decrease as patients age, with newer recommendations suggesting screening only if patients have a life expectancy of at least ten years.

Recommended Screening and Prevention—USPSTF Recommendations for Cancers

Breast Cancer:

  • Ages 40-74: Biennial screening mammograms recommended - Grade B.

  • Age 75 and older: Evidence is insufficient to assess - Grade I.

  • Dense Breasts: Insufficient evidence to recommend supplemental screening with ultrasound or MRI - Grade I.

Skin Cancer:

  • Asymptomatic individuals: Evidence is insufficient to recommend full clinical skin exams - Grade I.

Colorectal Cancer:

  • Ages 50-75: Screening options include:

    • Stool DNA-FIT every 1 to 3 years – Grade A.

    • Computed tomography colonography every 5 years.

    • Flexible sigmoidoscopy every 5 years.

    • Flexible sigmoidoscopy every 10 years combined with annual FIT.

    • Colonoscopy screening every 10 years.

  • Ages 45-49: Grade B recommendation for screening.

Recommended Screening and Prevention—USPSTF Recommendations for Other Cancers

Lung Cancer:

  • Ages 50-80: Annual low-dose CT advised for those with a 20-pack-year history who currently smoke or have quit in the last 15 years - Grade B.

Cervical Cancer:

  • Ages 21-29: Pap tests every 3 years.

  • Ages 30-65: Co-testing with HPV every 5 years - Grade A.

Prostate Cancer:

  • Shared decision-making recommended - Grade C, D.

Recommended Screening and Prevention—USPSTF Recommendations for Cardiovascular Conditions

Statin Use:

  • Recommended for primary prevention of coronary artery disease in adults aged 40-75 with one or more cardiovascular disease risk factors and a 10-year risk of >10% - Grade B.

Atrial Fibrillation:

  • Evidence is insufficient for routine screening - Grade I.

Abdominal Aortic Aneurysm:

  • Recommended for men aged 65-75 who have ever smoked, using ultrasound for a one-time screening - Grades B, I.

Recommended Screening and Prevention—USPSTF Recommendations for Infectious Conditions

HIV:

  • PrEP therapy should be prescribed for individuals at risk of infection - Grade A.

Latent Tuberculosis:

  • Screening recommended for those at increased risk - Grade B.

Chlamydia, Gonorrhea, and Syphilis:

  • Recommended screening for all women aged 24 or younger and women over age 25 at increased risk; insufficient evidence to recommend screening for men - Grades B, I.

Hepatitis C:

  • Screening recommended for all individuals aged 18-79 - Grade B.

Recommended Screening and Prevention—USPSTF Recommendations for Other Conditions

Diabetes:

  • Screen all adults over the age of 45 without risk factors; adults over the age of 25 with BMI >25 or with one or more risk factors - Grade A.

Bone Density:

  • Recommended screening for all women over 65 years of age, with additional evaluation for women aged 60-64 at high risk - Grade B.

Domestic Violence:

  • Screening recommended for all ages - Grade B.

Substance Use:

  • Screening recommended for all ages - Grade B.

Vision and Hearing:

  • Screening recommended for all persons aged >65 - Grade I.

Recommendations Against Screening in Asymptomatic Adults

The following conditions are advised against routine screening in asymptomatic adults due to insufficient evidence or potential harm:

  • Pancreatic cancer.

  • Ovarian cancer.

  • Testicular cancer.

  • Thyroid cancer.

  • Chronic Obstructive Pulmonary Disease (COPD).

  • Carotid artery stenosis.

  • Routine EKG.

  • Serologic testing for herpes virus.

  • Routine urinalysis in non-pregnant individuals.

Counseling Recommendations

Various counseling recommendations should be provided to patients, including:

  • Risks of falls in community-dwelling older adults.

  • Oral health screening and vision health screening.

  • Promotion of healthy diet.

  • Counseling for tobacco use and cessation.

  • Discussion on high-risk sexual behaviors.

  • Assessment for BRCA risk and genetic testing.

  • Management of substance use disorders.

  • Education about skin cancer prevention.

  • Emphasis on motor vehicle seat belt use.

  • Discussions regarding sleep hygiene and health.