Lidocaine CAS 137-58-6 

Lidocaine is a first-line drug for the treatment of ventricular arrhythmias caused by acute and severe hemodynamic abnormalities. For some supraventricular arrhythmias, such as bypass-mediated supraventricular tachycardia and acute onset or parasympathetic nerve-mediated cardioversion of atrial fibrillation is also effective. It is widely used for mucosal surface anesthesia (such as before tracheal intubation).