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Antiarrhythmic Drugs
Part 4
29
Nursing
Graduate
11/01/2014

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Term
WHAT MEDICATIONS WORK WITH CLASS II? WHAT ARE THEY USED TO PREVENT?
Definition
BETA BLOCKERS. USED TO PREVENT AND TREAT SUPRAVENTRICULAR AND VENTRICULAR ARRHYTHMIAS
Term
WHAT DOES CLASS II INHIBIT TO DECREASE AUTOMATICITY AND CONDUCTION VELOCITY.
Definition
SYMPATHETIC EFFECTS. THIS DECREASES RATE OF RISE FOR SA NODE DEPOLARIZATION, DECREASE AV CONDUCTION AND INCREASE AV REFRACTORY PERIOD... LIKE DIG.
Term
WHAT DOES CLASS II HAVE LESS EFFECT ON (HINT CONDUCTION) AND MORE EFFECT ON (HINT POTENTIALS)?
Definition
LESS EFFECT ON VENTRICULA CONDUCTION AND MORE EFFECT ON NODAL POTENTIALS.
Term
WHAT ARE THE 3 MOST COMMONLY USED BETA BLOCKERS FOR CLASS II?
Definition
METOPROLOL, ESMOLOL, AND PROPANOLOL
Term
WHAT IS ANOTHER BETA BLOCKER THAT CAN ACTUALLY WORK IN ANOTHER CLASS?
Definition
SOTALOL. BLOCKS K CHANNELS ALSO SO IT IS ACTUALLY A CLASS II AND CLASS III.
Term
WHAT IS A NON-SELECTIVE BETA BLOCKER THAT ALSO PROLONGS ACTION POTENTIAL DURATION AND WTI BY BLOCKING POTASSIUM CHANNELS (PHASE 3 PROLONGED).
Definition
SOTALOL
Term
SOTALOL IS USED FOR TREATMENT OF WHAT 2 ARRHYTHMIAS?
Definition
VENTRICULAR AND ATRIAL ARRHYTHMIAS.
Term
WHAT DOES CLASS III DO?
Definition
BLOCKS K CHANNELS THAT ARE RESPONSIBLE FOR REPOLARIZATION DURING STAGE 3. THIS CAUSES A LONGER PLATEAU DURATION.
Term
IF CLASS III INCREASES THE REFRACTORY PERIOD WHAT DOES THAT DO TO REENTRY MECHANISMS?
Definition
DECREASES THEM
Term
CAN CLASS III CONTRIBUTE TO THE DEVELOPMENT OF AFTER DEPOLARIZATIONS?
Definition
YES
Term
TYPICALLY CLASS III DOESN'T SLOW VENTRICULAR CONDUCTION VELOCITY. WHAT MEDICATION IS AN EXCEPTION?
Definition
AMIODARONE
Term
WHAT ARE 4 DRUGS THAT WORK ON CLASS 4?
Definition
IBUTILIDE, DOFETILIDE, BRETYLIUM, AMIODARONE
Term
WHAT TYPE OF ARRHYTHMIAS IS IBUTILIDE USED TO TERMINATE?
Definition
ATRIAL ARRHYTHMIAS
Term
HOW DOES IBUTILIDE WORK LIKE OTHER CLASS III DRUGS?
Definition
PROLONGS REPOLARIZATION BY INHIBITING K DURING PHASE 3.
Term
WHAT KIND OF METABOLISM DOES IBUTILIDE HAVE?
Definition
HEPATIC METABOLISM
Term
WHAT IS THE HALF LIFE OF IBUTILIDE AND WHAT ARRHYTMIA CAN IT INDUCE?
Definition
6 HRS. CAN INDUCE TORSADES
Term
WHAT IS THE MAIN DIFFERENCE WITH DOFETILIDE?
Definition
SIMILAR TO IBUTILIDE EXCEPT CAN BE GIVEN PO.
Term
WHAT 2 THINGS IS BRETYLIUM USEFUL FOR?
Definition
USEFUL AS AN ANTIHYPERTENSIVE AND ANTIARRHYTHMIC
Term
WHAT TYPE OF ARRHYTHMIAS IS BRETYLIUM USEFUL FOR?
Definition
VENTRICULAR ARRHYTHMIAS, BUT NO EFECT ON ATRIAL TISSUE.
Term
HOW DOES BRETYLIUM WORK?
Definition
INCREASES ACTION POTENTIAL DURATION IN NML AND ISCHEMIC CELLS. IT IS NO LONGER RECOMMENDED IN ACLS PROTOCOL.
Term
WHAT ALL DOES AMIODARONE BLOCK?
Definition
BLOCKS K, NA, AND CA CHANNELS ALONG WITH B RECEPTORS. IT DECREASES SA NODE AUTOMATOCITY, AV CONDUCTION VELOCITY AND PROLONGS AV NODE AND VENTRICULAR REFRACTORY PERIOD (BIG STOP SIGN FOR EVERYTHING CONDUCTION).
Term
WHAT DOES AMIODARONE RESULT IN AN EKG?
Definition
PROLONGS PRI, QRS, AND QTI
Term
WHAT TYPE OF ARRHYTHMAIS CAN AMIODARONE BE USED TO TREAT?
Definition
TREAT AND PREVENT RECEURRENCE OF ARIAL AND VENTRICULAR ARRHYTHMIAS
Term
WHAT OTHER CLASS IS WITH AMIODARINE TO PREVENT ARRHYTHMIAS?
Definition
B-BLOCKERS
Term
WHAT IS THE DOSE OF AMI?
Definition
150MG OVER 10 MINUTES, THEN INFUSION OF 1MG/MIN FOR 6 HRS OR 300MG DILUTED IN 20ML NS RAPID IV FOR PULSELESS VT OR VF. UP TO 5MG/KG FOR INITIAL LOADING DOSE.
Term
WHAT IS THE HALG LIFE OF AMI?
Definition
1-3 MONTHS!!!!!!!!
Term
WHAT ARE 7 SIDE EFFECTS OF AMI? REMEMBER IT IS MOSTLY R/T TISSUE ACCUMULATION. AMIO JUST SITS IN TISSUE FOR EVEN YEARS AFTER ADMINISTRATION.
Definition
PULMONARY FIBROSIS (DON'T USE HIGH FIO2), BRADYCARDIA, DECREASE TN(SOME SAY D/T A-BLOCKADE, SOME SAY D/T IV MIXTURE), THYORID TOXICITRY (BLOCKS CONVERSION OF T4 TO T3), PERIPHERAL NEUROPATHIES, OCULAR DEPOSITS, CYANOTIC- LOOKING SKIN
Term
WHAT 4 MEDICATIONS HAVE DRUG INTERACTIONS WITH AMI?
Definition
B-BLOCKERS, CCB, DIG (PROLONGED CARDIAC EFFECTS AND INCREASE R/O DIG TOXICITY), OPIOIDS ESP. FENTANYL= COMBINED BRADYCARDIC EFFECT.
Term
IS AMI HIGHLY PROTEIN BOUND?
Definition
YES UP TO 96&%. THIS CAN LEAD TO OTHER DRUG INTERACTIONS.
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