isotropic drugs Flashcards
What class of drugs are used as antiarrhythmics (4)
cardiac glycoside
lidocaine
calcium channel blocker
amiodarone
what is a drug example of a cardiac glycoside
digoxin
what is a drug example of a calcium channel blocker
Verapamil
what is the use of cardiac glycoside
cardiac arrhythmias
what is the use of lidocaine
ventricular tachycardia
what is the use of calcium channel blockers
cardiac arrhythmias
what is the use of amiodarone
supra ventricular and ventricular arrhythmias
what is the mechanism of action of cardiac glycoside
increases vein force and speed of heart contraction
what is the mechanism of action lidocaine
move sodium across cell membranes to stabilise heart contraction
what is the mechanism of action of calcium channel blockers
blocks calcium ions reducing contraction
what are the side effects of cardiac glycoside (6)
N&V
anorexia
visual disturbances
dizziness/confusion
cardiac arrhythmias
hypokalaemia
what are the side effects of lidocaine (4)
confusion
convulsions
bradycardia
hypotension
what is the side effect of calcium channel blockers
bradycardia
what are the side effects of amiodarone (3)
thyroid problems
photosensitivity
bradycardia
what is the caution of cardiac glycoside
shouldn’t be used with furosemide
