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Ionotropic Drugs

from notes

QuestionAnswer
digoxin is exreted? in the urine
what do you not want to use for prinzmetal B blockers
B blocker that is lipid soluble and enters CNS Propranolol
B blocker that does not enter CNS as much Atenolol
three things digoxin does decreases HR, TPR, and Na levels
nitrates do? reduce preload and afterload
Ca channel blockers do? reduce contractility and afterload
What do DHP Ca channels do? decrease afterload and dilate coronary vessels
DHP should be put with B blockers
what do B blockers do decrease HR, contractility, output and systolic AP
dont use digoxin for? diastolic failure
what would you use for increased renal, splanchnic and coronary perfusion dopamine (LOW DOSE)
in the heart cAMP causes? contraction
in VSM cAMP causes? relaxation
why can't milrinone be used chronically toxicity and arrhythmia
dobutamine is given I.V.
Na nitroprusside is given? I.V.
when do you add B blockers to a CHF patient after ACEI and Diuretic
B blockers are especially effective with? stress and exercise
do beta blockers increase HR no
do cardiac specific Ca channel blockers increase HR no
effect of B blockers on coronary blood flow none
all Ca channel blockers are vasodilators decreasing afterload
do Beta blockers affect preload or afterload neither
what do B blockers and cardiac affecting ca channels have in common they both decrease excitability of AV node
what is the problem with slowing contractility increase ejection time
who can be montherapy for mild hypertension ACEI, Thiazide, Ca Ch blocker, B antagonist, Alpha antagonist
A. increases rates of myocardial contraction and relaxation; can cause release of NE from sympathetic nerve terminals dopamine
clonidine is a Alpha 2 agonist
prazosin is a Alpha 1 antagonist
alpha 1 antagonists are used for HTN (good for benign prosthetic enlargement)
ACEI work most in CHF or HTN CHF
Created by: jmuame03
Popular Pharmacology sets

 

 



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