The pressure of blood in the aorta during systole and diastole
1 of 28
Complete the equation: Mean arterial pressure =
Cardiac Output x Total Peripheral Resistance
2 of 28
What is the textbook value for an adult male's arterial blood pressure?
120/80 mmHg
3 of 28
What is pulse pressure?
The difference between systolic BP and diastolic BP (~40mmHg)
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What is mean arterial pressure (MAP)?
Diastolic BP + 1/3 pulse pressure
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Where are bodily baroreceptors located?
Aortic arch & carotid sinus
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What are the two types of fibres that respond to stretching of the artery?
A fibres & C fibres
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True or false: at normal pressures, A fibres are all activated?
True
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True or false: firing of A and C fibres will increase parasympathetic NS stimulation?
True
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True or false: the Vagus nerve is part of the sympathetic nervous system?
False
10 of 28
At normal pressures, ~25% of C fibres are firing. If blood pressure increases, will the number of firing C fibres increase or decrease?
Increase
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A decrease in blood pressure will cause a decrease in baroreceptor firing. Once the CNS has registerested this, what will happen to the firing of the PNS and SNS nerves?
PNS firing would decrease, SNS firing would increase
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True or false: Increased SNS firing would increase total peripheral resistance?
True
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True or false: Blood pressure is an example of a continuous variable?
True
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In approximately what percentage of patients is their mild hypertension due to 'white coat syndrome'?
20-50%
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What is the WHO's definition of hypertension?
A rise in arterial blood pressure without changes in cardiac output
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True or false: Hypertension is primarily a disease of peripheral resistance?
True
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IN women, blood pressure is normally lower, but by approximately how much?
5-10mmHg
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Does blood pressure increase with the menopause?
Yes
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True or false: During vigorous dynamic exercise, the body's systolic BP increases and diastolic BP decreases?
True
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At what pressures should antihypertensive treatment definitely be initiated?
Systolic >160 or Diastolic >100
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What is idiopathic hypertension?
Hypertension with no known cause
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True or false: Primary/idiopathic/essential hypertension accounts for ~95% of all hypertension cases?
True
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A genetic lack of glutathione-s-transferase could cause primary hypertension. What is the role of glutathione-s-transferase?
It's a powerful reducing agent and is used to 'mop up' free radicals in the body
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True or false: reductions in nephron number are linked to the development of essential hypertension?
True
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The current average salt intake per person the UK is 12g/day. WHat is the WHO target?
5g/day
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True or false: in hypertensive patients, reducing salt intake by 6g/day would reduce blood pressure by 7mmHg?
True
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True or false: a high birthweight correlates with a high blood pressure?
False
28 of 28
Other cards in this set
Card 2
Front
Complete the equation: Mean arterial pressure =
Back
Cardiac Output x Total Peripheral Resistance
Card 3
Front
What is the textbook value for an adult male's arterial blood pressure?
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