CARDIAC BETA BLOCKER (EXAM 2) Flashcards
what does beta 1 do
-increase HR
-increase renin secretion=Increase BP
what does beta 2 do
-dilate bronchioles
-promote gastrointestinal and uterine relaxation
-increase blood flow in skeletal muscle
is beta 1 selective or non selective
they are cardio selective
who is beta 1 used with
patients with history of asthma and COPD
Side effects of beta 1
fatigue
dizziness
dry mouth
peripheral edema
is beta 2 selective or non selective
non selective
who should you not use beta2 in?
why?
-those with asthma and COPD
-cause bronchoconstriction and exacerbation of asthma and COPD
what do beta blockers do?
decrease the effects of the sympathetic N.S
adverse reactions of beta2
SOB
productive cough
the cough associated with beta blockers is a manifestation of?
bronchospasm
interventions with beta blockers
-monitor HR
-monitor for palpitation
-monitor s/s of heart failure
-DO NOT STOP SUDDENLY
should you stop beta blockers suddenly?
NO
interactions with beta blocker
NSAIDS
Alcohol
Anesthetics
what are the contraindications with beta blockers
Bradycardia
Hypotension
Acute heart failure
what should you do before administering beta blockers (CARDIAC)
-obtain BP, HR and heart rhythm
-monitor blood studies
what blood studies do we monitor with beta blockers
liver function
blood glucose
should beta blockers be crushed
NOOOOO especially extended release
administration of beta blockers
give with meals
alert for adverse reactions
what to monitor with beta blockers
HR
BP
Heart rhythm
S/S of beta blocker toxicity
blurred vision
very slow HR
hypotension
SOB
swelling in legs
change in LOC
dizziness
what is the treatment of beta blocker toxicity
support ABC
administer antidote =glucagon IV
what is the antidote of beta blocker toxicity
Glucagon IV
what is metoprolol
it is a beta blocker
uses of metoprolol
control hypertension
acute myocardial infarction
angina
HF
MOA of beta blocker
promote blood pressure reduction via beta 1 blocker
contraindication of beta blocker
heart block
cardiogenic shock
hypotension
acute HF
bradycardia
what increases bradycardia and heart block with what drugs
digitalis
clonidine
SSRIs
MAOIs
side effects of bradycardia
fatigue
dizziness
dry mouth
depression
erectile dysfunction
what are life threatening effects of beta blocker (metoprolol)
dysrhythmias
bronchospasm
HF
agranulocytosis
