Dysrhythmias Flashcards
Bradydysrythmias description
under 60, bradycardia, syncope, LOC
Bradydysrythmia drug
atropine
Sinus Tachycardia
Regular rhythm over 100, (hypovolemia, anemia, fever, PE, etc)
Sinus Tachycardia Drugs
Beta Blockers, Calcium Channel Blockers
Atrial Fib
Atrial foci fire randomly, normal or rapid rate, most common sustained dysrythmia, high risk of stroke
A Fib drugs
beta blockers, calcium chanel blockers (verapamil, diltiazem), amiodarone (K chanel blocker), oral anticoagulant
A flutter
rapid regular atrial beats (250-350bpm) high risk of stroke
A flutter drugs
beta blockers, calcium channel blockers (V and D) Amiodarone (K chanel blocker), oral anticoagulant
Sustained Supraventricular Tachycardia
HR 150-250, treat the cause (Vagal maneuvers (bear down, cough), cardio version)
Sustained Supraventricular Tachy drugs
Beta blockers, CCB, adenosine (drug of choice for paroxysmal SVT episodes)
Premature Vent Contraction
benign unless cardiac S/S; in MI may cause V-fib, Several PVC’s = v-tach
Premature Vent Contraction Drugs
B Blockers (acebutolol
Sustained vent tachycardia
single rapidly firing foci in vent (150-250 bpm) vents can’t pump effectively at this rate
Sustained vent tachycardia drugs first line
cardioversion
SVT with pulse drugs
amiodarone or lidocaine
SVT long term drugs
amiodarone B blocker
SVT w/o pulse first line
CPR and defibrilation
V fib
asynchronous firing of multiple vent foci, not cordinated contraction pumping stops, emergency
V fib drugs
epinephrine
amiodarone
1 B sodium channel blocker
Lidocaine (short term vent dysrhythmias only!)
1st pass
frequently contains epi
1 A sodium channel blocker
procainamide
last drug of choice from toxicity
Weekly CBC bc of blood dycrasias
ADR’s lupus like syndrome, nutriopenia, thrombocytopenia
Quinidine (malaria) rarely used
Adenosine (misclanious class)
IV-immediate onset
pt supine
HL of 10 secs
systole, prolonged PR, monitor RR and BP
Potassium Channel Blocker: amiodarone
life threatening vent dysrhythmias, PO or IV,
ADR Pulmonary, cardio, thyroid, liver toxicity
opthalmic effects
toxic in preg and b feeding
blue skin, no grapefruit
don’t use in heart blocks
Calcium Channel Blockers
verapamil diltiazem
supra vent tachycardia, a fib, a flutter
slows rate
ADRs Brady, av block hypoTN, HF, edema, HA, dizzy, flushing, dig toxicity, don’t combine with BBLKR
