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7 Cards in this Set

  • Front
  • Back
what is hypertenison?
elevation in BP
caused by peripheral arerial resistance
only 50% of the 50 million diagnosed. have their BP under control
at least 50 million others have hypertension
few signs/symptoms: silent killer
defined: systolic > 140 mmhg
diastolic > 90 mmhg
affects women more, men tolerate it less!
affects blood vessels in the:
eyes
heart
kidneys
brain
consequences are:
failing vision
coronary occulusion
renal failure
CVA
cause is increase peripheral resistance
why increase is poorly understood
treatment goals ::SLDJajsf
factors involved w/ HTN"
stress(freq. emotional disturbances)
obesity(esp appled shaped)
excessive etoh intake
smoking
overuse of caffeine
overuse of stimulatory drugs
HTN is strongly familial. meaning/??
like a parent has it too
3 factors contribute to essential HTN:
hyperactivity of symp nervous system
hyeractivity of renin angiotensin system
endothelial dysfunction
what else?
sympathetic nervous system
normally:
when BP is low baroceptors in lg vessels respond
tell brain to stimulate adreneals
more norepinephrin & epinephrine
cause vessels to constrict / hi HTN
if this system hyperactive, leads to HTN
WHEN BLOOD VOLUME DECREASE (0R KIDNEYS NOT PERFUSED WELL) KIDNEYS PRODUCE RENIN
PRECUSOR TO ANGIOTENSIS i
WHAT THEN
IN THE LUNGS: ANGIOCONVERTING ENZYME CHANGE ANIO I TO ANGIO 2 MOST POWERFUL VASOCONSTRITOR IN BODY
ANGIO 2 CAUSES VESSELS TO CONSTRICT
STIMULATES ADRENALS TO MAKE ALDOSTERONE (RETAINS NA+ AND WATER)
S/sX "
headaches
chest pains
nosebleeds
weak/numb extemity on occasion
visual distubance
dizziness
risk factors
blacks
elderly
familial
emotional stress
fat
booze
dm
hi salt diet
smoking
couch potato
hi cholesterol level
inactivity
lower education/sociaeconomic status