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Biology - paper 1
organisation
cardiovascular diseases
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Created by
Phoenix Dixon
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Cards (30)
What are cardiovascular diseases primarily related to?
Heart
and
blood vessels
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What is a key feature of cardiovascular diseases?
They are
non-communicable
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What is the function of the coronary arteries?
To provide
oxygen
to
heart muscle cells
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What happens to the coronary arteries in coronary heart disease?
Fatty material
builds up inside them
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What is the effect of narrowed coronary arteries?
Reduced
blood flow
and
oxygen
to the heart
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What can extreme cases of coronary heart disease lead to?
A
heart attack
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What are statins used for?
To reduce
cholesterol
levels in blood
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What is an advantage of statins?
They reduce the risk of
coronary heart disease
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What is a disadvantage of statins?
They can cause
liver problems
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What is a stent used for?
To keep a
coronary artery
open
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What is an advantage of inserting a stent?
Normal
blood flow
through the artery
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What is a limitation of a stent?
It does not treat
underlying
causes
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What can happen when heart valves do not function properly?
The heart has to pump harder
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What are the two types of valves used for replacement?
Mechanical
valves and
animal
valves
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What is a benefit of mechanical valves?
They can last a
lifetime
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What is a risk associated with mechanical valves?
Increased risk of
blood clots
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What is a disadvantage of animal valves?
They do not
last
as long
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What is heart failure?
The heart cannot pump
enough
blood
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What is a solution for severe heart failure?
Donated heart
or
heart and lungs
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What is a problem with donated hearts?
Not enough are
available
for patients
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What must patients take after receiving a donated heart?
Drugs to prevent
rejection
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What is an artificial heart used for?
A temporary solution for
heart failure
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What is a risk associated with artificial hearts?
Increased risk of
blood clotting
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Why are artificial hearts not a long-term solution?
They can only be used for a
short time
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What are the methods of treating cardiovascular diseases?
Statins
to reduce
cholesterol
Stents
to keep
arteries
open
Heart valve replacements
(
mechanical
or
animal
)
Heart transplants
(
donated
or
artificial
)
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What are the advantages and disadvantages of statins?
Advantages:
Reduce risk of
coronary heart disease
Effective treatment
Disadvantages:
Can cause
liver problems
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What are the advantages and disadvantages of stents?
Advantages:
Allow normal
blood flow
Disadvantages:
Do not treat underlying causes
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What are the advantages and disadvantages of heart valve replacements?
Advantages:
Mechanical valves last a
lifetime
Animal valves
do not require drugs
Disadvantages:
Mechanical valves increase
blood clot risk
Animal valves may need replacement
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What are the advantages and disadvantages of heart transplants?
Advantages:
Can restore
normal heart function
Disadvantages:
Limited availability of
donated hearts
Risk of rejection requiring medication
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What are the advantages and disadvantages of artificial hearts?
Advantages:
Temporary solution for
heart failure
Disadvantages:
Increase risk of
blood clotting
Not a long-term solution
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