HLTC22H3 Lecture Notes - Colorectal Cancer

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Published on 29 Jun 2011
School
UTSC
Department
Health Studies
Course
HLTC22H3
Professor
HLTB01H3S: Health, Aging and the Life Cycle
Department of Health Studies
University of Toronto at Scarborough
Winter 2010
Instructor: Anna Walsh
Term: Winter 2010 Mondays 3 p.m. - 5 p.m.
Lecture Room: Room AA112 (Arts Administration Building)
February 22/2008.
A&G: Ch 6 - Aging of the Internal Organ Systems.
This chapter discusses aging of the cardiovascular, respiratory, gastrointestinal, and
renal/urinary systems. Normative age-related changes (i.e., changes common enough that
most older adults can expect to experience them) are examined, in addition to the
common diseases and malfunctions of the individual systems that can accelerate the
aging process.
Cardiovascular System
Basic Anatomy and Physiology
The cardiovascular system is the body’s main transportation system.
Blood is a highly complex fluid.
The heart is the centre of the circulatory system.
The right and left sides of the heart each serve as a pump.
Age-Related Changes
-Cardiovascular disease is very common in later life, and results in the majority of
disability and deaths among older adults
Disease-Related Processes
Hypertension
-120/80 or lower is optimal, even 130/85 is normal
-140/90 is classified as hypertension
-Increases risk of heart and kidney disease, peripheral vascular disease, strokes
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Arteriosclerosis and Atherosclerosis
-Arteriosclerosis – thickening and loss of elasticity of arterial walls
-Atherosclerosis – form of arteriosclerosis, deposition of plaques in arterial wall
-Treat with statins and lifestyle changes
Peripheral Vascular Disease
-Peripheral arterial occlusive disease (PAOD), arteries to legs and feet are partially
or completely blocked due to atherosclerosis
-Symptoms include cyanosis of legs, lack of hair growth, and weak MAP
Coronary Heart Disease
-Atherosclerosis of coronary arteries
-Leading cause of heart disease in older pop and major cause of disability & death
-Angina pectoris: common symptom, develops when demand for blood to the
heart muscle is greater than what can be supplied
-can lead to myocardial infarct (heart attack), due to blood clot
Heart Failure
-almost exclusively a disease of the old
-left ventricle not able to pump sufficiently
-may result in fluid build-up in the lungs due to excess pressure from veins
Promoting Optimal Aging
There are a number of ways that diseases of the cardiovascular system can be
slowed or delayed and deceleration of these disease processes can lead to many
additional years of healthy life.
oFolic acid
oAntioxidants such as vitamin E
oLight to moderate alcohol
Respiratory System
Basic Anatomy and Physiology
The primary function of the respiratory system is to transfer oxygen from the air
into the bloodstream and to remove carbon dioxide.
Constant suction of excess pleural fluid into the lymphatic channels to create
negative pressure between the pleural linings, which hold the lungs to the thoracic
wall
Age-Related Changes
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Document Summary

Term: winter 2010 mondays 3 p. m. - 5 p. m. A&g: ch 6 - aging of the internal organ systems. This chapter discusses aging of the cardiovascular, respiratory, gastrointestinal, and renal/urinary systems. Normative age-related changes (i. e. , changes common enough that most older adults can expect to experience them) are examined, in addition to the common diseases and malfunctions of the individual systems that can accelerate the aging process. Cardiovascular disease is very common in later life, and results in the majority of disability and deaths among older adults. 120/80 or lower is optimal, even 130/85 is normal. Increases risk of heart and kidney disease, peripheral vascular disease, strokes www. notesolution. com. Arteriosclerosis thickening and loss of elasticity of arterial walls. Atherosclerosis form of arteriosclerosis, deposition of plaques in arterial wall. Peripheral arterial occlusive disease (paod), arteries to legs and feet are partially or completely blocked due to atherosclerosis. Symptoms include cyanosis of legs, lack of hair growth, and weak map.