AS Biology Edexcel Topic 1 - Cardiovascular disease (CVD)

A power point on all the topics surrounding Cardiovascular disease (CVD) for the Edexcel AS Biology Topic 1 course (for the unit 1 exam)

What is CVD? (heart attack, stroke, angina)

Risks (Genetic, age, gender, hypertension, lifestyle factors: smoking, unhealthy diet, lack of exercise, alcohol, salt, stress...)

Treatments (lifestyle changes, medical treatments: antihypertensives, anticoagulants, statins, platelet inhibitors)

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  • Created by: Hannah
  • Created on: 30-12-11 21:36

Slides in this set

Slide 1

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All about Cardiovascular
disease (CVD)
The disease
Treatments (lifestyle changes,
medical treatments)…read more

Slide 2

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What is CVD?
The disease of the heart and blood vessels
Heart attack (Myocardinal infarction) ­ blockage of
coronary heart vessels
Stroke ­ blood supply to part of the brain
Angina ­ narrowing of the coronary blood vessels…read more

Slide 3

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The risk of suffering CVD is increased
Genetic factors (does the condition run in the
Age (as one grows older, their blood vessels lose
Gender (until the menopause, oestrogen provides a
degree of protection against CVD for women, also
men are genuinely accepted as being exposed to a
more stressful occupation)
High blood pressure ­ hypertension (increases the
likelihood of atherosclerosis occurring due to
damage to blood vessel walls)
Lifestyle factors: smoking tobacco, unhealthy diet
(high in salt and saturated fats) and lack of exercise
(to exercise the heart muscle)…read more

Slide 4

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Other factors...
Salt (a high-salt diet causes the kidneys to retain
water and higher fluid levels in the blood result in
elevated blood pressure with the associated CVD
Stress (the release of adrenaline causes arteries
and arterioles to constrict, resulting in raise blood
pressure and stress can also lead to over eating, a
poor diet and higher alcohol consumption)
Alcohol (heavy drinking raises blood pressure,
contributes to obesity and can cause irregular
heartbeat and can damage the heart, brain and liver
which is used to break down carbohydrates, fats and
proteins)…read more

Slide 5

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Treatment of CVD
Risk of CVD can be reduced by lifestyle changes
Stopping smoking (tobacco)
Moderate exercise several times a week
Reducing intake of alcohol (stopping over
consumption of alcohol)
Changing diet by lowering cholesterol (salt) and
saturated fat intake…read more

Slide 6

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Medical treatments for CVD:
Antihypertensives (hypertension) ­ reduce high blood
(Plant) Statins ­ Reduce blood cholesterol levels (muscle
aches, nausea, constipation and diarrhoea, liver failure) ­
People may also stop trying to eat healthy and leaving it
to the statins
Anticoagulants (e.g. warfarin) ­ Reduce risk of blood clot
formation (risk of uncontrolled bleeding ­ dosage control
is essential!)
Platelet inhibitors (aspirin) ­ Make platelets less sticky
(reducing risk of clot formation) (aspirin irritates the
stomach lining and can cause serious stomach bleeding,
using clopidogrel with aspirin can make the risk greater)…read more

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