title: Brugada syndrome unmasked by lithium.
abstract: A 38-year-old man was brought by emergency medical service after resuscitation following cardiac arrest. The patient was found pulseless with a wide complex tachycardia. The patient had bipolar disorder and was on lithium, lamotrigine, and ziprasidone. His electrolytes and lithium levels were normal. An electrocardiogram (EKG) was performed the next day and showed type 1 Brugada pattern. Lithium was held. Electrophysiologists made a diagnosis of drug-unmasked Brugada syndrome. Lithium can unmask Brugada syndrome through its ability to block sodium channels, even at subtherapeutic concentrations. Physicians need to be aware of this potentially fatal drug effect and should monitor EKGs of patients on lithium.
authors.affiliation: Maimonides Medical Center, Brooklyn, NY 11220, USA. drpreetichandra@yahoo.com
authors.forename: Preeti A
authors.initials: PA
authors.lastname: Chandra
authors.forename: Abhinav B
authors.initials: AB
authors.lastname: Chandra
mesh_terms: D000328:Adult; D018692:Antimanic Agents / Q000008:administration & dosage* / Q000009:adverse effects*; D001714:Bipolar Disorder / Q000188:drug therapy; D053840:Brugada Syndrome / Q000150:complications / Q000175:diagnosis*; D016887:Cardiopulmonary Resuscitation; D004359:Drug Therapy, Combination; D004562:Electrocardiography; D006323:Heart Arrest / Q000209:etiology* / Q000628:therapy; D006329:Heart Conduction System / Q000187:drug effects*; D006801:Humans; D000077213:Lamotrigine; D018020:Lithium Compounds / Q000008:administration & dosage* / Q000009:adverse effects*; D008297:Male; D010879:Piperazines / Q000008:administration & dosage; D026941:Sodium Channel Blockers / Q000008:administration & dosage / Q000009:adverse effects; D013844:Thiazoles / Q000008:administration & dosage; D014227:Triazines / Q000008:administration & dosage
chemical_list: D018692:Antimanic Agents; D018020:Lithium Compounds; D010879:Piperazines; D026941:Sodium Channel Blockers; D013844:Thiazoles; D014227:Triazines; C092292:ziprasidone; D000077213:Lamotrigine