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NURS 305 Chapter 15
Environmental Hazards
45
Nursing
Graduate
05/21/2010

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Cards

Term
Hypersensities to chemical substances arise from:
Definition

-Chemicals in processed foods

-Synthetic materials

-Cosmetics

-Toiletries

Term
OSHA
Definition

Occupational Safety and Health Administration

 

-Regulates hazardous materials in the work place

Term
DDT
Definition
A pesticide which does not break down and can gradually accumulate in the environment, in our foods, and in our bodies.
Term
Effects of chemicals on our bodies:
Definition

-Tissue damage at the site of entry.

 

-The chemical can travel through our bloodstream and effect other organs.

-

Term
Detoxification
Definition

-Our liver is responsible for the inactivation and removal of wastes.

 

-Often chemicals bypass the liver and accumulate in the body.

Term
Hexachlorophene
Definition

-An antiseptic used in hospitals for many years.

 

-It is absorbed through the skin and after repeated exposure is known to cause brain damage.

Term
Pthalates
Definition

-Chemicals used to soften plastics.

 

-Found in baby bottle caps and toys.

 

-Put children at risk.

Term
BPA
Definition

-A hardening agent found in plastics.

 

-Used in baby bottles and water bottles.

 

-Mimic the hormone estrogen and act physiolocially within tissues.

 

Believed to lead to infertility and endocrine-sensitive cancers.

Term
Solvents
Definition
-A chemical believed to cause altered menstrual cycles, spontaneous abortions, and stillbirth.
Term
Chemical effects on cells:
Definition

- Damage cell membrane

-Cause swelling of cell

-Lead to rupture of cell

-Alter metabolic pathway

-Cause mutations which lead to cancer.

Term
Lead
Definition

-A heavy metal found in batteries, piping, and paint.

 

-Can accumulate in tissues over long-term exposure.

 

-Stored in bone in the body

 

-Can vaporize over time

 

 

 

Term
Pica
Definition
The craving for non-food substances such as clay.
Term
Toxic Effects of Lead:
Definition

-Hemolytic Anemia (destruction of erythrocytes leading to low hemoglobin levels)

-Lead Colic (inflammation and ulceration of digestive tract)

-Inflammation of the kidney tubules

-Neuritis (inflammation and demyelinationof peripheral nerves)

-Encephalopathy (edema and degeneration on neurons in the brain)

Term

How lead effects children:

 

(even in low doses)

Definition

-Seizures

 

-Convulsions

 

-Delayed development

 

-Intellectual Impairment

 

-Irreversible brain damage

Term
Ways to detect lead poisoning:
Definition

-By bone defects

 

-By lead lines in the bones or on the gingiva and gums adjacent to the teeth

Term
Inhalents
Definition

-Particulates such as asbestos and silica

 

-Gases such as Sulfur Dioxide and Ozone

 

-Solvents such as carbon tetrachloride

Term
Effects of Inhalents:
Definition

-Irritation of the eyes and nose

 

-Inflammation of the respiratory tract causing pneumonitis

 

-Inflammation of the liver cells causing hepatic damage

Term
Sources of toxic inhalents:
Definition

-Factories

-Laboratories

-Mines

-Insecticides

-Aerosols

-Air pollution

-Paints, Glues

Term
Carbon Monoxide
Definition

-Found in things such as automobile exhaust

 

-Displaces oxygen from hemoglobin

 

-Can lead to death during prolonged exposure

 

 

Term
Effects of Cigarette Smoking:
Definition

-Emphysema

-Bronchitis

-Lung cancer

-bladder cancer

-peptic ulcers

-cardiovascular disease

-infertility

-stillbirth

-low birth weight

Term
Hyperthermia
Definition
An excessive elevation in body temperature
Term
Who is at risk for hyperthermia?
Definition

-older people

-infants

-cardiac patients

Term
Syndromes associated with hyperthermia:
Definition

-Heat cramps and muscle spasms caused by a loss of electrolytes.

 

-Heat Exhaustion with sweating, headache, nausea, and syncope (fainting)

 

-Heat stroke with shock, coma, and high core body temperature

 

-Vasodilation

 

Term
Hypothermia
Definition
Exposure to extreme cold
Term
Effects of Hypothermia:
Definition

-Vascular occlusion leading to necrosis and gangrene

 

-Loss of sensation

 

-Lethargy and Confusion

 

-Pulse and respirations slow

 

-Vasoconstriction and increased blood viscosity

 

-Hypovolemic shock (low blood pressure)

Term

How to treat Hypothermia:

 

Definition
By gradual warming and fluid replacement in order to maintain adequate circulation.
Term
Sources of Radiation
Definition

-The sun

 

-Radioactive Minerals in the soil

 

-Nuclear reactors

 

-Diagnostic treatments such as X-ray

Term
Ionizing Radiation
Definition

-X-rays and Gamma rays

 

-Protons and Neutrons

Term
How radiation emissions are measured:
Definition
In roentgens
Term
How the amount of radiation absorbed in the body is measured:
Definition
In RADS (radiation-absorbed doses)
Term
Cellular effects of Radiation:
Definition

Effects cells that undergo rapid mitosis such as epithelial cells, bone marrow, and the gonads. 

 

DNA is altered causing cross-linkages and mutations

 

Cancer is often the result of prolonged radiation exposure.

Term

Radiation Sickness

 

Definition

Results from exposure to large amounts of radiation

 

Damage to bone marrow, digestive tract, and Central Nervous System.

 

Bone Marrow replacement must be done or victims will die within a few days.

Term
Effects of noise on the ears:
Definition
May rupture the tympanic membrane (eardrum) or damage nerve cells in the inner ear.  Nerve cell damage is irreversible.
Term
Tinnitus
Definition
Ringing in the ears
Term
Bites and stings may cause disease by:
Definition

-Direct injection of animal toxin. Ex: Spider bites, snake bites

 

-Transmission of infectious agents through animal or insect vectors. Ex: Rabies

 

-Allergic reaction to insect's secretion.  Ex: Bee stings which cause anaphylactic shock

Term
Escherichia coli (E. coli)
Definition

-Part of the normal intestinal flora

 

-Transmitted by the oral-fecal route

 

-Can cause gastroenteritis, vomiting, diarrhea

 

-Also known as "Traveler's Diarrhea"

 

-Can cause Hemolytic Uremic Syndrome (HUS) which causes damage to the renal tubules.

Term
Salmonella
Definition
Infection associated with contaminated poultry or food handlers who are a carrier (they act as a reservoir).
Term
Listeria
Definition
Common bacterium in processed meat products such as sausage or ham.
Term
Shigella
Definition

Causes dysentery (bloody diarrhea) that is extremely dangerous.

 

Transmitted primarily through unwashed hands.

Term
Melamine
Definition

A plastic added to food and milk to allow dilution of the food with water.

 

Reacts as a protein and can go unnoticed.

 

Can cause acute renal failure and death.

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