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what is the definition of bp
the force/ pressure thst blood exerts on the walls of vessels
what is the physiology behind blood pressure
left ventricles contract
pushes blood into the aorta
the aorta distends to allow the blood in which will then elasticly recoil to push the blood along
what does the systolic blood pressure represent
when the heart beats and forces blood into the aorta
what does the dystolic bp represent
lowest pressure when your heart relaxes between beats
the difference between the systolic and diastolic bp can be called the
pulse pressure
whats an average pulse pressure
40
how high would give an increased risk of cvd
higher than 40
if the pulse pressure was lower than 40 what would this show
poor heart function
if you can feel a radial pulse what blood pressure would this represent
80mmHg
if you can feel a femerol pulse what blood pressure would this represent
70mmHg
if you can feel a carotid pulse what bp would this represent
60mmHg
what controls bp
chemoreceptors
baroreceptor
circulating hormones
nervous and circulatory control
sympathetic and parasympathetic vaso control
what helps venous return
position ie gravity
muscular contraction
respiratory movements
suction of the heart
what causes low bp
blood flow may be inadequate
essential organ dysfunction
sob and chest pain
hypovolemic/ trauma/ stress
fainting
90/60
what can high blood pressure do to the vessel walls
damage them
how will arteries be effected by high bp
thick, inelastic
what health conditions in high bp likely to cause
aneurysms
heart attack
stroke
describe essential and secondary hypertension
essential has no known cause-bp sustained high
seconday- from other diseases
describe fainting
sudden brief loss of consciousness caused by reduction in blood flow to brain
recover completely to normal
what is postural fainting caused by
pooling of venous blood to feet
what can cause fainting
emotional
-Vasovagal- sudden drop in hr and bp

cardiac origin- mainly bradycardia
supraventricular tachycardia (heart not fillinf properly)b
clinical signs and symptoms of faintinf
intial slow pulse
cold clamy
pupils both dilated
respiration shallow to normal
reduced loc initially
how would you manage fainting
position
ensure airway open
loosen clothing
treat secondary surveg
transport on stretcher
x of y cards