when they become narrowed by the build up of layers of fatty materials within them. this reduces the flow of blood, resulting in less oxygen for the heart muscle, which can lead to heart attacks.
factors that affect health
communicable diseases
non-communicable diseases
diet
stress
exercise
life situation
stent
its is inserted into blocked coronary arteries to keep them open.
advantages of a stent
widens the artery and less serious surgery
disadvantages of a stent
can involve major surgery and risk from anaesthetic used during the surgery
statins
they are drugs that reduce blood cholesterol levels, slowing down the deposit of fatty material in the arteries
advantages for statins
effective, no need for surgery and can prevent CHD from developing
disadvantages for statins
possible side effects such as muscle pain and it cannot cure CHD, so the patient may have to take the tablets for many years.
replace faulty heart valves
heart valves that leak or do not open fully, preventing control of blood flow to the hearts, can be replaced with biological or mechanical valves
advantages for rhv
allows the control of blood flow to the heart and long term cure
disadvantages for rhv
can involve major surgery and a risk from anaesthetic used during the surgery
transplants
if a heart fails a donor heart, or heart and lungs, can be transplanted. artificial hearts can be used to keep patients alive while waiting for a hart transplant, or to allow the heart to rest during recovery
advantages for transplants
long term cure and treats problems that cannot be treated in other ways.
disadvantages for transplant
it may be rejected if it is not a match, lengthy process, major surgery and risk from anaesthetic during the surgery
What is a risk factor?
any aspect of your life style or substance in your body that can increase the risk of a disease developing
diet
type 2 diabetes or cardiovascular diseases
the body does not respond properly to the production of insulin, so blood glucose levels cannot be controlled
alcohol
impaired liver function, impaired brain function or affected development of unborn babies.
smoking
lung disease and cancers or affected development of unborn babies
carcinogens
cancers
cancer
rapid division of abnormal cells causing a tumour
malignant tumours
they invade neighbouring tissues and spread to other parts of the body in the blood