What is a prodysrhythmic?
Anything that causes aberrant conditions in the heart (disease, drug, etc)
Primary mechanism as to how antidysrythmics work.
- prolonging refractory period
- (increase/decrease impulse, conduction, or both)
- -slide 8
What is the problem with putting someone on long-term antidysrhythmias?
They can CAUSE dysrhythmias!
What is cardioversion?
synchronized shock (so that normal conduction system will take over)
Pt teaching for Procainamide.
- (Sodium channel blocker)
- -monitor HR, dizziness
- -wt gain
- -do not combine with other meds/supplements
- -medic alert ID
What should you assess prior to administering procainamide (sodium channel blocker)?
Why is lidocaine not usually given as a Na+ channel blocker anymore?
- Very NARROW therapeutic index-
- can be toxic (CNS depression, anxiety, tremors, seizures, coma)
BB are primarily used for _______.
- atrial dysrhythmias with HF
- -usually POST MI
What is propranolol (Inderal) used for?
long-term therapy for dysrhythmias
When are BB contraindicated?
- sick sinus syndrome
- AV block
- (would slow heart even more!)
How should BB be administered?
SLOWLY!!! (will see drop in HR)
What should you check prior to administering BB?
APICAL pulse & VS
Pt teaching for BB.
- Take pulse prior to admin
- depresses/masks hypoglycemia with DM
- caution with ADLs
- Do NOT stop abruptly
Amiodarone (Cordarone, Pacerone) blocks _____ channels and inhibits _______.
Drug of choice for ventricular dysrhythmia in ACLS.
Why is amiodearone (Cordarone) no longer used for long-term therapy?
causes pulmonary problems (pulmonary fibrosis)
_______ can elevate the affect of Amiodarone and cause significant bradycardia.
Pts taking _______ should use caution with loop diuretics b/c it can cause significant bradycardia. Why?
AE of amiodarone.
Pt teaching with amiodarone.
- NO grapefruit juice
- can worsen glaucoma
- wear protective clothing, sunglasses, etc (photosensitivity)
Contraindications to amiodarone.
- iodine allergies (amiodarone contains iodine)
What to monitor for with CCB.
Which antidysrhythmic is given FAST?
What is adenosine (Adenocard) used for?
- atrial tachycardia
- -invokes a period of asystole!
What is dogoxin used for?
primarily for HF
_______ should be avoided in clients suffering from severe HF, as this drug can worsen the condition
Which drugs can be used for both atrial and ventricular tachycardia dysrhythmias?
Procainamide & Amiodarone
Early signs of ________ toxicity include CNS effects such as paresthesias, drowsiness, confusion, anxiety, or tremors.
Common side effects related to _________ include nausea, abdominal pain, and headache.
serious problem with ______ is the onset of a pneumonia-like syndrome.