Related Experiment Video
Updated: Aug 11, 2026

Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
Published on: April 5, 2011
[Clinical evaluation of amiodarone hydrochloride as an anti-arrhythmia agent]
Insights
Amiodarone hydrochloride effectively treats ventricular and supraventricular arrhythmias, with over 86% immediate success. Low doses minimize side effects like corneal opacification, establishing it as an excellent oral antiarrhythmic medication.
Area of Science:
- Cardiology
- Pharmacology
Context:
- Ventricular and supraventricular arrhythmias pose significant clinical challenges.
- Oral antiarrhythmic drug efficacy and safety are crucial for patient management.
Purpose:
- To evaluate the efficacy and safety of oral Amiodarone hydrochloride in treating cardiac arrhythmias.
- To determine optimal dosing strategies to minimize adverse effects.
Summary:
- A study of 15 patients demonstrated high efficacy of Amiodarone hydrochloride for arrhythmias, with 86.6% immediate resolution.
- Significant reductions in heart rate and corrected QT interval were observed.
- Corneal opacification, the primary side effect, was found to be negligible at lower, effective doses.
Impact:
- Amiodarone hydrochloride is confirmed as an excellent oral antiarrhythmic agent.
- A recommended dosage regimen of 400 mg daily for 20 days per month with a 10-day break minimizes corneal opacification.
- The potential synergistic effect of Amiodarone with Quinidine for post-D.C. cardioversion rhythm maintenance is suggested.
Abstract:
15 patients with ventricular and supraventricular arrhythmias treated with Amiodarone hydrochloride via oral were studied. The results obtained show that in 86'6% of the cases the arrhythmia disappeared immediately, in 6'6% the arrhythmia disappeared late and in only one case the arrhythmia persisted. Statistical significance was found in the reduction of cardiac frequency as well as in the corrected QT interval for the frequency. The latter is an indirect consequence of the mode of action of the drug. The only side effect observed was the appearance of corneal opacification. It was demonstrated that this side effect is negligible when low doses which are equally effective are administered. The conclusion that Amiodarone is an excellent oral antiarrhythmic drug is reached. A daily dose of 400 mg during the first 20 days of each month with a rest of 10 days is recommended. In this way, the corneal opacification is minimal or nil. The possibility that the association of the drug with Quinidine could be effective in maintaining sinus rhythm post D.C. is suggested.
Related Concept Videos
Mechanism of Cardiac Arrhythmias
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers
Heart Failure Drugs: Inotropic Agents
Dysrhythmias V: Evaluating Dysrhythmias
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

