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biology paper 1
organisation
cardiovascular dissease
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Benjamin
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Cards (29)
What is cardiovascular disease?
Diseases of the
cardiovascular system
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What is the main focus of the video?
Treatments for
cardiovascular diseases
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What are the treatments for cardiovascular diseases mentioned?
Stents
Statins
Replacement
valves
Replacement
hearts
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What happens in coronary heart disease?
Coronary arteries
get blocked by
fatty material
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What is the effect of narrowed coronary arteries?
Less blood and oxygen reach the
heart muscle
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What are the two main treatments for coronary heart disease?
Stents
and
statins
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What is a stent?
An
expandable
tube placed in
arteries
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What are the benefits of stents?
Quick
surgery
and long-term effectiveness
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What are the risks associated with stent surgery?
Heart attack
, infection,
blood clot
risk
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What do statins do?
Alter
cholesterol
balance in the
bloodstream
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What are the two types of cholesterol?
LDL
(bad) and
HDL
(good)
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What is the problem with bad cholesterol (LDL)?
It causes fatty deposits in
coronary arteries
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How do statins affect cholesterol levels?
Decrease
bad cholesterol
and increase
good cholesterol
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What are the downsides of taking statins?
Must be taken regularly and can cause
side effects
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What can damage heart valves?
Aging
,
heart attacks
,
infections
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What is the role of heart valves?
Allow blood to flow in one
direction
only
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What are the two main problems with faulty heart valves?
Stiff
valves or valves that
leak blood
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How can faulty valves be fixed?
By
replacing
them with new valves
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What types of valves can be used for replacement?
Biological
or
mechanical
valves
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What is a risk associated with valve replacement surgery?
Ongoing risk of
blood clots
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What is heart failure?
Heart can't pump blood
properly
anymore
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What is the only proper treatment for severe heart failure?
A new
heart transplant
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What types of hearts can be used for replacement?
Biological
or
artificial
hearts
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Why are artificial hearts generally temporary fixes?
They aren't very
effective
long-term
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Why can't pig or cow hearts be used for transplants?
We need a human
donor
heart
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What is a risk after a successful heart transplant?
The body may
reject
the new heart
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What is a heart and lung transplant?
Transplant of both
heart
and
lungs
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What is a challenge with heart and lung transplants?
Hard to find
donor
organs
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What is a complication of heart and lung transplant surgery?
The surgery is very
complicated
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