Test 2 Flashcards
Founders of environment health
Florence, Lillian wald, and Virginia Henderson (fostered prevention and self sufficiency in the environment)
Lead contamination
Over 10 ug/dL is bad, Symptoms include anorexia, apathy, irritability, headache, dizziness, sleep disturbances, anemia, weight loss, encephalopathy, peripheral neuropathy and seizures. Exposure may manifest reduced intellectual and neuropsychologic development.
Healthy people goals
Want 85% of people to live in an area that meets EPA standards for pollution
Increase protection from radon
Decrease beach closings from bacteria
Strategies for protection
Educate, permits, guidelines/standards, use of non-disposable products
Nurses role
Advocate for policy change, provide accurate information, spokesperson
Four environmental principles
- Everything is connected to everything else
- Everything has to go somewhere
- The solution to pollution is dilution
- Today’s solution may be tomorrow’s problem
Epidemiology
The study of the distribution or patterns of health events in populations and the determinants or factors that influence those patterns.
Provides baseline data for utilization in the community
Focus on population, cause, prevention and maintenance
Descriptive epidemic
Looks at health outcome related to person place and time
Analytic epidemic
Looks at determinants of disease, the how and why
Study types
ECOLOGICAL looks at descriptive and analytical epidemiology ie comparison breast cancer rates and breat feeding
CROSS SECTIONAL general description of scope of problem, collection of simultaneous data like health status, potential risk factors and personal characteristics
CASE-CONTROL known to have or not have outcome
COHORT calculation of incidence rates and factor or exposure
Epidemiology basic concepts
Agent: factor present or lacking for the disease to exist (ex. Not having enough vit C leads to scurvy)
Host: living species capable of being affected or infected by the disease
Environment: all that is external or internal to host or agent that influences the host or agent
Environmental health
Environment is the primary determinant of health
Level of prevention
Primary, secondary, tertiary
To prevent or halt or reverse a disease as early as possible
Primary prevention
Promotes health and prevents disease from occurring
Pre-pathogenesis, risk factors, health promotion and protection
Secondary prevention
Detect disease early in process, before clinical S/S are present, enables early diagnosis and treatment
Pathogenesis, sub clinical signs, early detection/diagnosis through screenings, etc.
Tertiary prevention
Intervention begins once disease is obvious, to interrupt amount of disability that may occur and begin rehab
Advanced disease culmination, care and rehab
Natural history or progression of disease
Pre-pathogenesis (susceptibility)
Pathogenesis (before symptoms and clinical onset)
Culmination (death, disability, recovery)
Data measurement
Epidemiological Rates - measure frequency of event in a defined population and period of time
Incidence rates: new cases in a population during a period of time
Prevalence rates: measure of existing disease in a population at a particular time
Morbidity-event of illness
Mortality: death
Risk, probability illness will occur
John grunt
Used bills of mortality to study death patterns, forerunner of demographics
looked at births and deaths weekly
More male babies and more males died.
Infant mortality seasonal and high assess impact black plague on popuation london
Lemuel shattuck
Sanitation and public health
Experimental studies
Investigator initiates treatment or intervention that may influence the risk or course of disease
Clinical and community trials
Screenings
Give test to people who are a symptomatic but likely to have the disease
Validity and reliability
Communicable disease
A human or animal disease caused by an infectious agent and resulting from transmission of that agent from an infected person, animal or inanimate source to a susceptible host. Infectious disease may be communicable or non communicable.
Endemic
Constant presence of infectious disease within a specified geographic location
Epidemic
Occurrence of an infectious agent or disease within a geographic area in greater numbers than would be expected
Pandemic
Worldwide outbreak of epidemic
Communicable disease history
Communicable disease was the leading cause of death in 1800s
Epidemics were popular and wiped out entire populations
Decrease since 1900s
Reason for decrease in diseases
Improved nutrition and sanitation
Vaccination
Antibiotics
Categories of infectious agents
Bacteria, fungi, parasites, viruses
Agent factors
Infectivity, pathogenesis, virulence, toxicity, invasiveness, antigenicity