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Chapter 12

HSS 1101 Chapter Notes - Chapter 12: Transient Ischemic Attack, Coronary Artery Disease, Angina Pectoris


Department
Health Sciences
Course Code
HSS 1101
Professor
Tien Nguyen
Chapter
12

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Coronary Heart Disease
Coronary heart disease is the major disease of the cardiovascular system. It is the result of
atherosclerosis plaque accumulation in which the blockage occurs in the coronary arteries.
o Myocardial infarction (heart attack): blockage of blood flow to an area of the heart.
o Coronary Thrombosis: blood clot in a coronary artery (blood does not flow)
o Collateral Circulation: if heart block is minor, the heart will adapt over time by using
small unused/underused blood vessels to reroute oxygen and blood.
o Ischemia: loss of oxygen in the heart due to insufficient blood flow relative to the
demand of tissue
o Angina Pectoris: severe chest pain occurring as a result of reduced oxygen flow to the
heart
Signs of a heart attack include
o Chest discomfort (pressure, squeexing, pain, burning)
o Discomfort in other areas of upper body
o Shortness of breath
o Sweating
o Nausea
o Lightheaded
Stroke
Stroke occurs when the blood supply to the brain is cut off
o Thrombus: blood clot
o Embolus: a wandering clot
o Aneurysm: weakening in blood vessels that cause it to bulge or burst
Consequences of a stroke depend on where the blood flow was cut off to and for how long
(speech impairment, memory loss, and loss of motor control can occur)
Transient ischemic attack (TIA): mild strokes often an indicator of an impending major stroke
Symptoms:
o Weakness
o Trouble speaking
o Vision problems
o Headache
o Dizziness
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