Hypertensive Heart Disease & Cor Pulmonale Flashcards
if the radius of a blood vessle decreases, what happens to the resistance and blood flow
- poiseuille’s law
- resistance to blood flow increases
- blood flow decreases
- how can we preserve blood flow is the radius decreases?
- what does this mean for the heart?
- increase change in pressure
- it has to work harder
when you increase the radius of vasculature, what happens to afterload
decrease
double product
- amount of O2 used by the heart
- DP = HR x SBP
normal BP
less than 120 and less than 80
elevated BP
120-129 and less than 80
high blood pressure, HTN stage 1
130-139 or 80-89
high blood pressure, hypertension stage 2
140 or higher or 90 or higher
hypertensive crisis
higher than 180 and/or higher than 120
why do people stop taking their anti-hypertensive medication
- unpleasant side effects
- interference with sexual function
- cost
- taking anti-hypertensives does not change the way a pt feels so why take them
- increased age
- gender: women
- african american
what is the relationship between BP and risk of CVD event
- positive, continuous, consistent, independent of other risk factors
- higher chance of having a MI, HF, PVD, carotid atherosclerosis, stroke, left ventricular hypertrophy and kidney disease
what does controlling systolic HTN help do
- reduce total mortality, cardiovascular mortality, stroke, HF events
essential or primary HTN
- no known cause
- increases with age
- reduced vascular compliance
- progressive
- 90% of all cases
secondary HTN
- caused by conditions that affect your kidneys, arteries, heart or endocrine system
- 10% of all HTN cases
- treatment focuses on management of the underlying cause
how does uncontrolled HTN and kidney disease relate
- cause arteries around the nephron of the kidney to narrow, weaken and harden
- unable to deliver blood to kidney tissue
