Tricyclic antidepressants include

  Amitriptyline, Amitriptylinoxide, Amoxapine, Butriptyline, Clomipramine, Desipramine, Demexiptiline,

      Dibenzepin, Doxepin, Dimetacrin, Imipramine, Imipraminoxide, Lofepramine, Melitracen, Metapramine,

      Nitroxazepine, Noxiptiline, Pipofezine, Nortriptyline, Propizepine, Protriptyline, Quinupramine,

      Trimipramine.




ECG abnormalities that may be observed during tricyclic antidepressant intoxication:

  Sinus tachycardia

  QT interval prolongation

  Torsades de pointes

  Atrioventricular blocks

  Widening of the QRS complex

  Right bundle branch block

  Brugada like ECG pattern

  Increased R wave amplitude and R/S ratio in lead aVR




References

  Chou's Electrocardiography in Clinical Practice. Adult and Pediatric.

      5th ed. Philadelphia. WB Saunders. 2001.

  Clin Pharmacol Ther 1975;18:539.

  Eur J Emerg Med 2010;17:325-327.

  J Assoc Physicians India 2010;58:120-122.

  J Cardiovasc Electrophysiol 2011 Oct 28. doi: 10.1111/j.1540-8167.2011.02196.x.

  Europace 2009;11:989-994.

  Psychiatry Investig 2008;5:247-250.