Table 2

Toxin Induced ECG Effects

Toxins that prolong the QT interval
Toxins that prolong the QRS interval

Antihistamines
Amantadine

     Astemizole
Carbamazepine

     Clarithromycin
Chloroquine

     Diphenhydramine
Class IA antiarrhythmics

     Loratidine
Disopyramide

     Terfenadine
Quinidine

Antipsychotics
Procainamide

     Chlorpromazine
Class IC antiarrhythmics

     Droperidol
Encainide

     Haloperidol
Flecainide

     Mesoridazine
Propafenone

     Pimozide
Citalopram

     Quetiapine
Cocaine

     Risperidone
Cyclic Antidepressants

     Thioridazine
Amitriptyline

     Ziprasidone
Amoxapine

Arsenic trioxide
Desipramine

Bepridil
Doxepin

Chloroquine
Imipramine

Cisapride
Nortriptyline

Citalopram
Maprotiline

Clarithromycin
Diltiazem

Class IA antiarrhythmics
Diphenhydramine

     Disopyramide
Hydroxychloroquine

     Quinidine
Loxapine

     Procainamide
Orphenadrine

Class IC antiarrhythmics
Phenothiazines

     Encainide
Medoridazine

     Flecainide
Thioridazine

     Moricizine
Propranolol

     Propafenone
Propoxyphene

Class III antiarrhythmics
Quinine

     Amiodarone
Verapamil

     Dofetilide


     Ibutilide


     Sotalol


Cyclic Antidepressants


Erythomycin


Fluoroquinolones


Halofantrine


Hydroxychloroquine


Levomethadyl


Methadone


Pentamidine


Quinine


Tacrolimus


Venlafaxine


Boyle et al. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine 2009 17:29   doi:10.1186/1757-7241-17-29

Open Data