Date post: | 03-Jan-2016 |
Category: |
Documents |
Upload: | bathsheba-ada-mcgee |
View: | 222 times |
Download: | 1 times |
Coronary Artery Disease (CAD)
Myocardium depends on the continuous delivery of oxygen & glucose.
If blood flow thru the coronary arteries is restricted CAD
Atherosclerosis
caused by the narrowing & stiffening of the arteries due to fatty deposits known as atheromas that build up in the wall of the arteries
Atherosclerosis
initial problem starts with patient having high levels of lipid & cholesterol › these substances infiltrate the wall of the artery @
sites of microscopic damage› form atheromas› coronary arteries& brain most common areas› atheromas build up eventually forming raised
patches called plaques
Plaques
constrict the lumen of the artery
restricts flow of blood to tissues beyond the plaque
if plaques not completely obstructing flow of blood it will cause turbulence by disrupting the smooth flow of blood thru the artery increases chances of blood clotting
Atherosclerosis Risk Factors
Smoking Diet with lots of fried foods or high in saturated
fats Excess weight Family history
Angina
chest pains that come on with exertion & are relieved by rest
caused by temporally inadequate supply of blood to cardiac muscle
common triggers: exercise, cold weather, stress, or a large meal
treated with meds that dilate coronary arteries
Myocardial Infarction
heart attack occurs when an area of cardiac muscle is
deprived of blood due to blockage of coronary artery muscle cells die
Congestive Heart Failure (CHF)
heart’s inability to effectively pump blood to lungs & body’s tissues
onset can be sudden or gradual
Congenital Heart Defects (CHD)
defects present from birth› babies cyanotic, tire easily, short of breathe
probable genetic influence most diagnosed prenatally by ultrasound surgical advances have greatly improved survival
Heart Valve Disorders efficient functioning of valves is disrupted Valves can become loose (insufficiency) or tight
& rigid (stenosis)
Heart Murmurs
unusual heart sounds produced by turbulent blood flow
due to valve defect each valve
http://www.cardiologysite.com/