121 Week 2 Chapter 1 Disease Process

Editor's Notes

1. See page 60 of text: malaria Autosomal recessive hereditary disease Description and etiology is the medical classification Signs/symptoms/lab values are the distinguishing features
2. Pathogens include bacteria, fungi, worms, protozoa, parasites, viruses Trauma = injury or wound caused by external force Physical & Chemical agents=extreme temperature, radiation, atmospheric pressure, electric shock, poisoning, drowning, bites, asphyxiation, burns Genetic= neoplasm, mutations, autosomal dominant/recessive Metabolic or nutritional= malnourish, vitamin and mineral deficiency or excesses Ask students for 3 examples of disease for each category
3. Example: malaria Risk of death, medication resistance, weakness due to anemia, jaundice (liver problems, fatigue) Illness experience includes: Onset – 1 st symptoms appear Diagnosis – identification of disease/condition Patient status – how patient adjusts to the condition Recovery – may not be “all better”
4. Local venules, arterioles, and capillaries dilate causing blood flow to injured area (causing heat and redness) As the blood flow increases, more leukocytes reach the area, lining up within the capillary walls The damaged cells release histamine, causing …. Increased permeability of the capillary walls allowing plasma and neutrophils to leave the blood vessels and into the surrounding tissue Swelling (edema) puts pressure on sensitive nerve endings causing pain and tenderness Pain and tenderness causes loss of function Factors that reduce the inflammatory response are adequate nutrition, rest, good blood supply
5. Natural immunity through genetic makeup, normal body structure Acquired – defense of recognized, specific antigen by antibodies
6. Anaphylaxis: severe allergic reaction usually life threatening. Acute May occur after single or multiple exposures. Can occur within seconds or 40-50 minutes later Ask students if they have allergies, what are their symptoms.