1) Antiarrhythmic 2) Antiarrhythmic drug 3) Antiarrhythmic medication 4) Tonocard 1) Tonocard 
<chemical> 2-amino-n-(2,6-dimethylphenyl)propanamide. An antiarrhythmic agent which exerts a potential- and frequency-dependent block of sodium channels. It is generally well tolerated but induces pulmonary complications in some patients. ... Pharmacological action: anti-arrhythmia agents. ... Chemical name: Propanamide, 2-amino-N-(2,6-dimeth...
(to-ka´nīd) an agent used as the hydrochloride salt in treatment of ventricular arrhythmias.
[n] - antiarrhythmic drug (trade name Tonocard) used to treat ventricular arrhythmias when less dangerous drugs have failed
Tonocard noun antiarrhythmic drug (trade name Tonocard) used to treat ventricular arrhythmias when less dangerous drugs have failed