Antidysrhythmics Flashcards
Class 1 ib mech of action:
blocks sodium channels, accelerates repolarization, increases or decreases APD
Lidocaine classification:
Class 1 ib
Lidocaine indications:
-raises the VF threshold
-pain
Lidocaine adv effects:
twitching, convulsions, confusion, respiratory depression, HYPOtension, bradycardia, dysrhythmias
Lidocaine contraindications:
severe SA or AV block, or Stokes Adams or WPW syndrome
What should you watch for with lidocaine?
toxicity
S-slurred speech, A-Altered Cardio Vascular System, M-muscle twitching, S-seizures
Diogxin classification
Cardiac Glycosides (inotropic)
Diogxin correct levels
0.5 to 2 ng/mL
What must you check before administering diogxin?
Potassium levels, electrolytes, can cause toxicity
Diogxin adverse effects
Dysrhythmias including bradycardia or tachycardia, HA, fatigue, malaise, confusion, convulsions, very nausea and seeing green, yellow, purple/halo vision
Will someone taking diogxin be on a tele monitor?
Yes
Nursing implications diogxin
Any adverse effects, avoid with high fiber foods, slowly given, hold if HR less than 60, avoid IM
Nursing management for all HF meds
Adverse effects, UOP, decreased edema, SOB, dyspnea, crackles, fatigue, improvements
What is the mechanism of action of Sotalol?
Sotalol is both a beta-blocker (Class II antiarrhythmic) and has potassium channel-blocking properties (Class III antiarrhythmic). As a beta-blocker, it inhibits the effects of adrenaline on the heart, slowing the heart rate and reducing the force of contraction. As a potassium channel blocker, it prolongs repolarization and the action potential duration, stabilizing the heart rhythm.
What are the indications for Sotalol?
Atrial fibrillation and atrial flutter (to maintain normal sinus rhythm). Ventricular arrhythmias, including ventricular tachycardia and ventricular fibrillation. Prevention of life-threatening arrhythmias, especially after myocardial infarction (MI).
What are the contraindications for Sotalol?
Bradycardia (heart rate < 50 beats per minute). 2nd or 3rd degree heart block (unless a pacemaker is in place). Severe asthma or COPD. Long QT syndrome. Hypersensitivity to sotalol.
What is the classification of Sotalol?
Class II antiarrhythmic (beta-blocker) and Class III antiarrhythmic (potassium channel blocker).
What are the adverse effects of Sotalol?
Bradycardia and heart block. Fatigue, dizziness, or lightheadedness. Prolonged QT interval, increasing the risk of torsades de pointes. Bronchospasm. Nausea and diarrhea.
What client teaching is important for Sotalol?
Monitor heart rate regularly. Report if the heart rate drops below 50 bpm. Avoid sudden stopping of the drug. Report signs of dizziness, fatigue, or irregular heartbeat. Avoid alcohol and sedatives.
What is the mechanism of action of Amiodarone?
It prolongs the action potential and refractory period in cardiac cells, helping to regulate the rhythm of the heart.
What are the indications for Amiodarone?
Ventricular arrhythmias (such as ventricular tachycardia and ventricular fibrillation). Atrial fibrillation (AF) (for rhythm control). Prevention of arrhythmias in patients with implantable defibrillators. Supraventricular arrhythmias.
What are the contraindications for Amiodarone?
Severe sinus bradycardia. 2nd or 3rd degree AV block (unless a pacemaker is in place). Severe pulmonary disease. Hypersensitivity to amiodarone. Thyroid disease. Pregnancy (
What is the classification of Amiodarone?
potassium channel blocker.
What are the adverse effects of Amiodarone?
Pulmonary toxicity (e.g., pulmonary fibrosis). Thyroid dysfunction. Hepatic toxicity. Corneal deposits. Photosensitivity. Bradycardia and heart block. QT interval prolongation.
