coronary heart disease

Question 1

Why is cholesterol a problem?

Question 2

How does a heart bypass work?

Question 3

How does a stent help treat coronary heart disease?

Answer 3

It expands within the artery to widen the lumen so that more
Blood can pass through the lumen, allowing more oxygen to the
Heart.

Question 4

What is the job of valves?

Answer 4

to prevent back flow

Question 5

What methods of treatment are available for faulty valves?

Answer 5

Fixing it or replacing it with either a mechanical/biological valve from a human doner or an animal (typically a pig or cow)

Question 6

What is the treatment for irregular heartbeats?

Answer 6

Doctors can implant an artificial pacemaker just under the skin of the heart //////

Question 7

What is the treatment for a hole in the heart?

Question 8

What are the problems of having transplants?

Answer 8

• The body may reject the heart
• Risk of infection or the surgery to go wrong

Extra = maybe because its hard to fine the right doner or even a doner in the first place
 

Question 9

Which chemical process supplies the majority of the energy required for the contraction of muscle tissue?

Answer 9

Aerobic respiration

Question 10

Lactic acid

Answer 10

produced in anaerobic respiration, which occurs when there’s insufficient oxygen, leading to the partial breakdown of glucose.

Question 11

Coronary heart disease

Answer 11

Coronary arteries branch out of the aorta and supply oxygenated blood to the heart muscle.

In coronary heart disease, layers of fatty material build up inside the coronary arteries, causing the lumen to get narrower.

This reduces the flow of blood through the coronary arteries, resulting in a lack of oxygen and nutrients for the heart muscle.

This can cause chest pain as the heart muscle is starved of oxygen, and in severe cases, can cause a heart attack.

Question 12

The fatty material that builds up in coronary arteries is sometimes known as what?

Answer 12

fatty plaques.

Question 13

What are the benefits of stents when treating coronary artery disease? (3)

Answer 13

The stents have an almost immediate effect

Surgery is quick

The stents can last a long time

Question 14

How do statins help treat coronary heart disease?

Answer 14

They increase the amount of HDL cholesterol in the blood

They decrease the amount of LDL cholesterol in the blood

Question 15

What are the disadvantages of statins when treating coronary artery disease?

Answer 15

It can take months to see the positive effects

The pills have to be taken every day

They have side effects such as kidney failure and headaches

Question 16

What are two problems that may be caused by faulty heart valves?

Answer 16

Blood can pass backwards through the valve if it doesn’t close properly

Not enough blood can pass though the valve if it’s too stiff