Ventricular tachycardia (Vtach or VT) is a type of regular, fast heart rate that arises from improper electrical activity in the ventricles of the heart. Monograph Type: Systemic Drug; Drug Class: Macrolide Antibiotic; Trade Name: Zithromax azithromycins pharmacokinetics support oral dosing in adult. Local Anesthetic Systemic Toxicity (LAST): A lifethreatening adverse reaction resulting from local anesthetic reaching significant systemic circulating levels While generally safe, local anesthetic agents can be toxic if administered inappropriately, and in some cases may cause unintended reactions even when. Sustained ventricular tachycardia(VT) may arise in the conducting system below the bundle of His or in the ventricular myocardium or both lasting 30s or more at rate. Study Pharmacology Chapter 42 Cardiac Glycosides, Antianginals, and Antidysrhythmics flashcards. Play games, take quizzes, print and more with Easy Notecards. EMS Pharmacology Drugs that affect the cardiovascular system, another resource from MedicTests. com preparing EMS students for the NREMT exam. Flecainide acetate ( f l k e n a d flekAYnyde) is a class Ic antiarrhythmic agent used to prevent and treat tachyarrhythmias (abnormal fast rhythms of. Revista Brasileira de Anestesiologia Print version ISSN Rev. 2011.