Introduction: Recent studies have suggested that other medications may be superior to amiodarone in controlling ventricular arrhythmias. However, a prospective and randomized comparison with lidocaine has not yet been described.

Objective: This study aims to evaluate the effectiveness and safety of the use of amiodarone versus lidocaine in patients with stable ventricular tachycardias.

Methodology: For this, a unicentric, randomized and prospective study will be carried out, in which the two drugs will be administered in a comparative manner. Hospital data (test results, medical outcomes, arrhythmia reversal, complications) of patients will be analyzed for safety and effectiveness.

Expected results: The use of lidocaine is not inferior to amiodarone in the tolerability and reversion of stable ventricular tachycardias.

Inclusion Criteria:

• Adult men and women> 18 years old
• Presence of sustained ventricular tachycardia with HR> 120 bpm
• Systolic blood pressure> 90 mmHg
• No signs of poor peripheral perfusion
• Absence of dyspnea
• Absence of severe angina
• Signed consent form

Exclusion Criteria:

• Pregnancy
• Hemodynamic instability
• Body mass index greater than 40 kg / m2
• Use of intravenous amiodarone or lidocaine in the last 24 hours
• Acute coronary syndrome
• Presence of tachycardia with irregular or supraventricular RR
• Contraindications to study drugs