E4 Medications Flashcards
Ibutilide (covert)
acute treatment of a flutter, given IV for a new onset pt will convert to NSR either within infusions or 90 minutes of completion
Adenosine
drug of choice for SVT, short half life, given fast iv push to stop SVT, causes brief asystole
Class 1 antidysrhythmics
Sodium channel blockers, results in decreased conduction
Quinidine, procainamide, disopyramide phosphate (norpace)
Procainamide
Class 1A - effective for atiral and ventrical dysrhythmias, used in acute and long term treatment
Treatment of SE (systemic lupus) CBC weekly for SS of infection, watch for EKG changes (widening QRSs, prolonged QT)
Class 1B antidysrhythmics
Sodium channel blockers, accelerate repolarization and have little effect on EKG,
Phenytonin (dilantin)
treatment of atrial, AV and ventricular issues
Class 1B (sodium CB)
Mexiletine
treatment of ventricular problems
Class 1B (sodium CB)
Lidocaine
Class 1B, used as a neuromuscular blocking agent can cause respiratory depression
Class II antidysrhythmic drugs
Beta-adrenergic blockers
Decrease cardiac contractility, slows heart rate, conduction and myocardial contractility, used to mostly treat supraventricular dysrhythmias
Propanolol (nonselective), acebutolol, esmolol (cardio selective)
SE: bradycardia, hypotension, impotence
Class III antidysrhythmic drugs
Prolong (delay) repolarization and slow the rate of electrical conduction
Amiodarone (cordone) treats - a fib, pvcs, ventricular dysrhythmias and cardiac arrest, first line ACLS
Sotalol (betapace) beta blocker but considered a class III
Dronedarone (Multaq)
Class III antridysrhythmic - less toxic and less effective then amiodarone
Dofetilide (Tikosyn)
Class III antidysrhythmic, titrated while monitor ECG
Using with levoquin increases the risk of deadly dusrhythmias
Amiodarone Se/adverse reactions
- Can cause bradycardia (slow the infusion rate) AV block
- IV requires continuous monitoring, switch to PO before DC
- Abruptly ceasing can cause fatal dysrhythmias, PT must be compliant with meds
- LUNG damage: dyspnea, cough, chest pain STOP med, teach pt must report and replace with other med
- Hypo/hyperthyroidism may develop, monitor with periodic blood work
Class IV antidysrhythmic
Block calcium influx, slows automaticity, delays conduction, decreases contractility, slow ventricular rate
Continuous monitoring for IV dosing
Verapamil (Isoptin), Diltiazem (cardizem)
SE: nausea, vomiting, bradycardia, hypotension
Digoxin (Lanoxin)
treatment of supraventricular dysrhythmias, monitor for signs of toxicity (headache, N/V, altered mental status, HALO)
Aspirin, special considerations
Effective for suppressing platelet aggregation
Stop 7 days before procedures (including dental)
CP: chew one 325 mg or 4 81 mg tabs then follow up in ER
Thrombolytic Drugs and their dosing times
Alteplase tPA (Activase) IV bolus then 90 minute infusion
Reteplase rPA (Retavase) 2 doses 30 minutes apart
Tenecteplase TNK-tPA (TNKase) Single IV bolus
Monitoring for adverse effects of thrombolytics
Monitor for hemorrhage 24 hours after infusion, no invasive procedures, limited use of NSAIDS/antiplatelet/anticoags, minimize physical manipulation, AVOID injections
- EKG monitoring
- Pts may experience hypotension when first administered
Oxygen administration
Whenever O2 is <90% (unless COPD or Dr orders say otherwise)
Nitroglycerin
Dilates both veins and arteries, imporves blood flow to ischemia myocardium
Decreased preload/O2 demand, increases cardiac blood flow, decreases BP
0.4 mg SL q5 min x 3
DO NOT give nitro if
BP <90, HR <50 or >100, suspected right ventricle infarctions
Medications for treatment of ED (sildenafil (viagra)) can lead to severe hypotension
Betablockers
Treatment of STEMIs
reduce oxygen demand, increased coronary blood flow, reduce cardiac pain
Contraindications: asthma, COPD (unless cardioselective is used)
pronounced bradycardia <50
severe heart failure/heart block
persistent hypotension
ACE + ARBS
-pril ACE + -sartan ARB
Reduce preload and afterload, contraindicated in hypotension
ACE ‘cough’ use ARB
ACE - contra indicated in renal failure, renal artery stenosis, hypotension
Atrophine sulfate
Muscarinic antagonist - treatment of hemodynamically significant bradycardia and some heart block
- mydriasis and paralysis of ciliary muscles, used for eye procedures
GI uses: slows motility, relaxes biliary tract for gallstones, decreased secretion’s for PUD
Requires tight titration, has short half life
Anticholinergic effects - increased HR, decreased secretions, relaxation of bronchi
Adverse: dysrhythmias, MI, continuous monitoring when giving IV