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113 Cards in this Set

  • Front
  • Back
bb have ---- inhbition of cardiac B- receptors
competitive

B1
this competitive inhibition o f b1 receptors will decrease ----, and increase
decrease CO

increase acute reflex TPR
bb will impair --- tolerance
exercise
bb have block b1 that mediate ---- release
renin
blocking renin release will also block -----
ang 2
bb will also block--- receptors in the lungs
b2
blocking b2 in the lungs will decrease
bronchial smooth muscles reelaxation

can lead to bronchospasm in asthma
why's there impaired exercise tolerance w/ bb
decrease co, decrease bl tissue O2 and glucose
blockade of ---- b2 receptors will block ----- release
presynaptic

NE
bb will affect the cns by?
decreasing SNS activity
the more ----- soluable the more cns effects
lipid
bb can cause ---
depression
t/f

bb used durin pt's migraine
f

used prophylactically to treat migraines
bb will alter the ----reflex response
baro
differences in bb
selectivity

metabolism

isa

membrane stabilizing activity

direct vasodilation
metabolism of bb thru
hepatic

renal
t/f

bb has bad gi absorption
f

good gi absorption

goes thru 1st pass
t1/2 life of bb
low
--- soluable bb has poor absorption renally
water
isa:

inherant --- activity

how's this useful
agonist

partial agonist useful w/ asthmatics, chf, bradycardia
bb has ---- stabilizing activity
membrane
lidocaine has both antiarrhytmic and ----- activity
anesthetic
bb have -- anesthetic activity
local
bb have enchanced ------- activity
anti arrhythmic
membrane stability acitivty seen ---- therapeutic conc
above
bb inhibit -- channels and activity of ----
Na

neurons

that's why: membrane stabilizing activity
directe vasodilation of bb thru
no production

alpha 1 antagonist

beta 2 agonist

ca entry blockade

k channel opening

antioxidant acitivity
which nonselective has the most membrane stabilizing acivity
propranolol
which nonselective bb has he most lipid soluability
penbutalol

propranolol
which nonselective bb has the least lipid solubility
nadolol

pindolol

sotolol
which nonselective bb has mod lipid solubility
timolol
which nonselective will cause vivid dreams
penbutolol and pindolol

cuz of high lipid solubility, will cross bbb
which nonselective has the highest isa
pindolol
which nonselective has the least isa
penbutolol
selective b1 blockers w/ membrane stabilizing ability
acetutolol

metoprolol (at high doses)
selective b1 blockers w/ lipid solubility
metoprolol
3rd generation bb that are b1 selective
betaxolol

nebivolol
3rd gen bb w/ membrane stabilizing ability
carvedilol
3rd gen bb w/ mod bb solubility
carvedilol

betaxolol

nebivolol
3rd gen bb w/ low lipid solubility
cartelol

labetalol
when is bb a first line med
angina

mi

a fib
focus of htn according aha
bp <130/80
first line meds for htn
acei

arb

thiazide like

ccb

(usu takes 2 drugs)
bb used in uncomplicated ----
htn
bb used in htn used best in which pop of pts
young pt
why are bb best in young pts
cuz of resting tachycardia

increase in catecholamines

increase in renin
t/f

bb not useful in the elderly for htn
f

still useful
bb works best in high/low renin htn
high
which pop usu have high renin htn
caucausians
thru which receptors will bb decrease co and ang 2
b1
thru which receptors will bb decrease ne release
b2
t/f

bb works to decrease sns peripherally
f

centrally
bb have an altered ----
baroreflex
how will bb control glaucoma
decrase aq humor production
t/f

bb will increase outflow of aq humor
f
bb used in glaucoma
timolol

betaxolol

cartelol
bb used in migraines
propranolol

timolol
how do bb work in prophylactic use of migraines
prevent vasodilation that cause migraines
bb will decrease --- and severity of ha if used prophylactically
frequency

severity
bb used in hyper----
thyroidism
how will bb help w/ hyperthyroidism
decrease symptoms

decrease conversion of t4 to t3 peripherally
how can bb increase bp w/ hyperthyroidism
when hr slowed the sv will increase

this will increase bp
bb used in angina ---
pectoris
ischemia due to an increase in ---/---
NE/EPI
bb results when there's increased ---- or increased myocardial ----- beyond specific threshold
HR

contractility
ischemia associated w/
activity
how do bb relieve symptoms
increase time to hr associated w/ angina

prolong time to reach threshold to symptoms
why have exercise intolerance w/ bb
prevents vasodilation in muscles/vessels/lungs

bb prevent increase in HR
w/ acute mi which bb do you use
ISA
bb protect ischemic mycocardiam from ----
NE/EPI
bb protects from --- mi
recurrent
how do bb protect against mi
decrease contractility
bb decrease --- ---- and decrease workload
O2 demand

decrease workload allows repair
bb indicated for ------ arrhythmias
supraventricular
for supraventricular arrhythmias bb blocks --- node and --- transmission
AV

slows

slows

slows contractions and increases filling and increase pumping
why does the av node have a slower rate
to allow time to contract

push blood out of ventricles
bb extends --- period

why
refractory (time where you can't generate action potential)

bb extends the refractory period to slow # of impulse that reach the AV node. . . gives timeto accomadate
how do bb work w/ panic attacks
works to eliminate s/s
how do bb work in benign essential tremors
block b2 receptor on skeletal muscle
why are bb not used in parkinson's
cuz tremors in parkinson's are central

bb work peripherally. . . golfers use
bb used in benign essential ----
tremors
bb used in chf
carvidilol

metoprolol

bisoprolol

nebivelol
in hf bb will --- co, -- tpr, --- hr
increase co

decrease tpr

decrease hr
bb will initially worsen symptoms start w/ --- dose and---- slowly
low

increase
bb will --- qol of a pt and their ability to tolerate more ----
increase

exertion
bb cause broncho-----
constriction

asthma exacerbation

1/3 of copd pts have brochospasm ci
which bb would you use in asthmatic, copd
b1 selective
bb have cardio------ actions
depressive
bb have negative ---- and ---- actions
inotropy

chronotropy
neg inotropy lead to --- and ----
fatigue

chf
neg chronotropy lead to -----
bradycardia
bb can lead to --- block
av

1st, 2nd, 3rd degree heart block
bb will separate rate in --- and --
atria

ventricles

so they have separate beats: heart block
bb will cause ---glycemia in type 1 dm
hypo
bb will cause ---glycemia in type 2 dm
hyper
how will bb cause hypoglycemia in type 1
bb prevent glycogenolysis which will prolong hypoglycemia and mask symptoms
how will bb cause hyperglycemia in type 2
decrease insulin and increase glucose

wil also prolong hypoglycemia and mask symptoms
which bb increase insulin sensitivity in type 2 dm
3rd gen
because bb block b2 receptors in bl vessels what can happen
cold extremities (raynaud's)

skeletal muscle fatigue

pad (intermittent claudication)
how do you get skeletal muscle fatigue w/ bb
due to contraction there's a block on O2 and glucose
sudden stop of bbs you can have
sudden withdrawal syndrome
sudden withdrawal syndrome can lead to
acute angina

mi

marked increase in bp
blockade of beta can lead to --- of receptors
upregulaation
so wil abrupt withdrawal of bb you have too many beta: increased bp, hr, workload
t/f

you slowly withdrawal bb
t
due to lipid soluabilty of bb a pt can have ----
depression

nightmares

vivid dreams

hallucinations

fatigue
t/f

fatigue due to central actions
f

central and cv actions
bb may increase ldl, --- and decrease ---
increase LDL and TG

decrease HDL
which beta's improve lipid profile slightly
3rd generation

slighly
if you're borderline depressed --- can lead to depression
bb
drug interactions w/ bb
ccb

clonidine
which two meds should you not abruptly stop
bb

clonidine
what drug interaction w/ ccb
synergictic effects:

decrease bp, hr, contractility (both thru av node)
both bb and clonidine will --- bp
decrease