Lecture 2 Flashcards
What systolic blood pressure is considered a risk factor for coronary heart disease?
115
Where can BP variation be found?
Between populations
Between individuals
Within individuals
What kind of distribution is the population distribution of blood pressure?
The population distribution of blood pressure is unimodal with a skew to the upper values.
*Unimodal distributions are distributions where there is one big peak in the middle and other values rise to it from both directions.
What is MAP?
Diastolic BP + 1/3 Pulse pressure (syst - diast)
What conditions does a high blood pressure cause?
Coronary Heart Disease
Stroke
Cardiac Hypertrophy
Heart Failure
Kidney Failure
What is a haemorrhage?
When a blood vessel breaks this can result from high blood pressure
How much blood do the kidneys typically get?
Kidney get about 1/4 to 1/5 of the cardiac output.
Why are the kidneys prone to damage with high BP?
Glomerulus has a high blood pressure compared to that of other capillaries. During hypertension these capillaries are prone to damage due to that change being more dramatic in the glomeruli.
How do different populations vary in BP?
Populations vary in the mean BP rather than the spread of BP.
What is the difference in blood pressure between men and women?
Men have higher blood pressures than women
What happens t
Blood pressure rises with age
What is birth blood pressure?
Birth blood pressure is about 60
When during life do we see BP changes?
Rises in bp can be seen at each stage of life. A curve describes this with newborns of both genders BP grows identically between genders and then puberty and then adulthood sees a constant rise.
What happens to diastolic BP with age?
Diastolic BP rises until 60 years of age then starts to decline. As a result pulse pressure rises with age.
What happens to arteries with age?
arteries harden with age
