ECG Case 135
A single agent overdose causing AV blockade, QRS widening, and QT prolongation.... but reports of death only if QRS > 200ms. Which medication is this?
AGENTS local anesthetic agents tricyclic antidepressants carbamazepine (in very high doses) dextropropoxyphene antiarrhythmics e.g. flecainide, quinine propanolol thioridizine phenothiazines (not usually clinically significant) amantidine NB. phenytoin and sodium valproate do not usually present with features of sodium channel blockade in…