Card Set Information
drugs for hypertension - pharm quiz 2
what are the 2 factors that, when altered, can cause increase/decrease in BP?
cardiac output (HR, contractility, blood volume, venous return)
peripheral resistance (arteriolar constriction)
significance of sympathetic baroreceptor reflex? where are the two receptors located?
a system that regulates BP via the sympathetic NS by activating heart & vessel receptors
two baroreceptors are located in the carotid sinus & aortic arch
describe the renin-angiotensin-aldosterone system.
1. increased BP triggers kidneys to release
2. renin turns
to angiotensin I
(angiotensin converting enzyme) catalyzes angiotensin I to angiotensin II
constricts blood vessels, causing increased BP
5. angiotensin II also triggers release of
how do the kidneys play a role in BP?
1. BP falls, and the kidney reabsorbs sodium, water, and potassium
2. reabsorption causes increased blood volume
3. increased blood volume causes increased venous return
4. increased venous return causes increased CO
4. increased CO causes rise in BP
the kidney's effect on BP is neutralized by using ____ (what medication?)
main action of sympatholytics? (antiadrenergics)
affect the sympathetic nervous system (heart or blood vessels) to decrease BP