“…10 In this issue of the Arquivos Brasileiros de Cardiologia, the antiarrhythmic properties of the monoterpene (-)-Carvone was explored in vitro and ex vivo using diverse preparations that range from cellular assays to the isolated organ. 11 (-)-Carvone evoked a negative inotropic effect in the atria in a concentration-dependent fashion and reduced the contractility of isolated hearts after acute exposure to the terpene. The electrocardiogram (ECG) profile of isolated hearts exposed to this drug was marked with decreased heart rate, increased PR interval, and QTc.…”