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Amiodarone is an antiarrhythmic medication used to treat and prevent a number of types of cardiac dysrhythmias. [4] This includes ventricular tachycardia, ventricular fibrillation, and wide complex tachycardia, atrial fibrillation, and paroxysmal supraventricular tachycardia. [4]
It should be noted that many dogs who take the medication are older, so it's unclear whether the severe side effects are the result of the medication, their age, or other underlying health issues ...
Antiarrhythmic agents, also known as cardiac dysrhythmia medications, are a class of drugs that are used to suppress abnormally fast rhythms (tachycardias), such as atrial fibrillation, supraventricular tachycardia and ventricular tachycardia.
Atrial fibrillation is associated with an increased risk of heart failure, dementia, and stroke. [3] [12] It is a type of supraventricular tachycardia. [14] Atrial fibrillation frequently results from bursts of tachycardia that originate in muscle bundles extending from the atrium to the pulmonary veins. [15]
Celivarone is a non-iodinated benzofuran derivative, structurally related to amiodarone, a drug commonly used to treat arrhythmias. [1] Celivarone has potential as an antiarrhythmic agent, attributable to its multifactorial mechanism of action; blocking Na +, L-type Ca 2+ and many types of K + channels (I Kr, I Ks, I KACh and IK v 1.5), as well as inhibiting β 1 receptors, all in dose ...
However, a 2012 review of antiarrhythmic drugs noted that disopyramide is among the most toxic agents, with a high burden of side effects and increased mortality (compared to placebo) when used to treat atrial fibrillation. [7]
It reduces the recurrence of atrial fibrillation after patients undergo cardioversion, but it has proarrhythmic effects and trials suggest that it may lead to an overall increased mortality in these patients. [5] Quinidine is also used to treat short QT syndrome. [6]
Pimobendan is indicated for the management of the signs of mild, moderate, or severe congestive heart failure in dogs due to clinical myxomatous mitral valve disease (MMVD) or dilated cardiomyopathy (DCM); [1] [7] and for use with concurrent therapy for congestive heart failure (e.g.,furosemide, etc.) as appropriate on a case-by-case basis. [1]