Lithium

  Lithium is used for the treatment of bipolar disease (manic depressive disorder).



ECG abnormalities that may be seen frequently in patients with lithium intoxication

  Sinoatrial block

  Sinus bradycardia

 
T wave abnormalities: Negative, biphasic or flattened T waves



ECG abnormalities that may also be seen (albeit less frequently) during lithium intoxication

  Prolonged QT interval

  First degree AV block

  Brugada pattern

  Supraventricular tachycardia

  Ventricular tachycardia




References

  Circulation 2010; 122: e418-e419

  Basic Clin Pharmacol Toxicol 2007;100:353-355.

  Am J Psychiatry 2007;164:831-832.

  J Med Toxicol 2008;4:170-172.

  J Electrocardiol 1979;12:117-119.

  Ann Emerg Med 1982;11:208-211.