cardiovascular disease

• coronary arteries supply blood to the heart muscle
• fatty material build up in the artery causes less blood to flow through meaning less oxygen reaches the heart muscle
• fat builds up in the arteries lumen
• less blood flow = less oxygen to muscles
• low oxygen in the heart puts strain on the heart causing a heart attack
• a stent is a tube that is placed inside the artery to hold the lumen open to ensure blood flow
• what are two benefits of stents

  they last a long time and the surgery is quick
• a thrombosis is a blood clot near the stent
• what are the 2 risks of stent surgery

  could invite infection or a possible heart attack
• statin is a medicine that helps raise hdl and lower ldl
• hdl is good cholestoral
• LDL is bad cholestoral that causes fatty deposit in coronary arteries
• statin alters the balance of cholesterol
• statin can also prevent strokes and heart attacks
• what are the 2 downsides of taking statin

  have to take is regularly for several years and kidney failiure and headaches
• valves can get damaged over time or infections and heart atacks
• valves can get damaged like it being still not allowing blood to go through
• the valves can be samages and cause blood to flow backwards
• you can get a valve from a human pig or cow
• heart faliure is when the heart cant pump blood
• artificial hearts are a temporary fix till you can get a real heart from a donor
• waiting for a real heart can take alot of time
• another heart from a human can be rejected by the body as it sees it as foreign and try to destroy it
• name 1 advantage of an artificial heart

  made of plastic so immune system doesnt try to destroy it