EMT 205-3 Flashcards
cardiac glycoside are naturally occurring….
plant substances
glycosides work by
blocking certain ionic pumps in the cellular membrane
what two ways do digitalis glycosides affect the heart
increase strength of contraction (positive inotropic)
negative chronotropic and negative dromotropic
what are common side effects of cardiac glycosides
anorexia
nausea vomiting
visual disturbances
dysrhythmias
what is an example of a cardiac glycoside
digoxin
antidysrhythmic drugs are classified based on
mode of action on cardiac muscle
class 1 antidysrhythmics are _______ channel blockers
sodium
class 2 antidysrhythmics are ______ blocking agents
beta
class 3 antidysrhythmics are \_\_\_\_\_\_\_ channel blocking agents, they cease dysrhythmias that result from, an examples of this class is
potassium
reentry of blocked impulses
amiodarone
class 4 antidysrhythmics are known as ______ channel blockers, examples of these drugs are
calcium
verapamil, diltiazem
what types are of drugs are used as antihypertensives
diuretics sympatholytics vasodilators ACE inhibitors calcium channel blockers angiotensin 2 receptor antagonists
which type of drug is considered the drugs of choice for managing hypertension
diuretics
_____ are diuretics that work well to lower bp, an example of one is hydrochlorothiazide
thiazides
loop diuretics inhibit sodium and chloride reabsorption in the loop of henle, they can cause excessive loss of ________, an example of these is _____
potassium
fusosemide (lasix)
beta-blocking agents are used to treat hypertension, they are also used to treat ___ and ____, examples are
unstable angina
MI
the lols
