Txt MI: Antidysrhythmic Flashcards
What are the goals of treatment for Dysrhythmias?
Suppress flow through specific ion channels or by altering autonomic function;
prevention of an arrhythmia
What class of antiarrhythmic is Amiodarone?
Class III antiarrhythmic (K⁺ channel blocker)
How does Amiodarone affect cardiac electrical activity?
Blocks potassium channels to prolong repolarization and refractory period, stabilizing cardiac electrical activity
What arrhythmias is Amiodarone used to control?
Atrial fibrillation (afib) and ventricular tachycardia (vtach) caused by ectopic foci
ectopic foci (pacemakers outside the SA node)
Which additional ion channels does Amiodarone inhibit?
Na+ and Ca+ channels
In addition to blocking potassium (K) channels
What specific complications can arise from the use of Amiodarone?
Lung, heart, thyroid, and liver damage
What is a potential pulmonary toxicity associated with Amiodarone?
Pulmonary fibrosis
What liver-related issue may arise from Amiodarone?
Liver enzyme elevation
What ocular issue is associated with Amiodarone?
Corneal deposits
Amiodarone is a structural analog for what hormone?
Thyroid hormone
