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(Circulation. 2008;117:1890-1893.)
© 2008 American Heart Association, Inc.

Clinician Update

Induced Brugada-Type Electrocardiogram, a Sign for Imminent Malignant Arrhythmias

M. Juhani Junttila, MD; Maday Gonzalez; Eric Lizotte, MSc; Begona Benito, MD; Kevin Vernooy, MD, PhD; Andrea Sarkozy, MD; Heikki V. Huikuri, MD, PhD; Pedro Brugada, MD, PhD; Josep Brugada, MD, PhD; Ramon Brugada, MD

From the Division of Cardiology, Department of Medicine, University of Oulu, Oulu, Finland (M.J.J., H.V.H.); Montreal Heart Institute and University of Montreal, Montreal, Canada (M.G., E.L., R.B.); Cardiology Department, Thorax Institute, Hospital Clinic, Barcelona, Spain (B.B., J.B.); Department of Cardiology, Academic Hospital Maastricht, Maastricht, Netherlands (K.V.); and Heart Rhythm Management Institute, UZ Brussel-VUB, Brussels, Belgium (A.S., P.B.).

Correspondence to Ramon Brugada, MD, Montreal Heart Institute, 5000 Rue Belanger, Montreal, Quebec, H1T 1C8, Canada. E-mail ramon@brugada.org

An extract of the first 250 words of the full text is provided, because this article has no abstract.

	Introduction

 
Case presentation: A previously healthy 20-year-old man arrives at the emergency department for a consultation for mild fever. During his initial interview, he complains of palpitations to the triage nurse and therefore he undergoes an ECG, which is placed in the chart. A few minutes later, while awaiting his turn to be seen, he goes into cardiac arrest. The patient does not respond to resuscitation and dies in the emergency department. The autopsy reveals no cardiac structural abnormalities or evidence of myocarditis. The cause of death is determined as sudden unexplained cardiac death. The ECG from the emergency department revealed ST-segment elevation in the right precordial leads consistent with a Brugada ECG pattern.

	Introduction and Cases

 
The Brugada syndrome is a heterogeneous genetic disease that predisposes to life-threatening ventricular tachyarrhythmias and sudden cardiac death (SCD). The syndrome is usually identified by a characteristic Brugada-type ECG that consists of ST elevation of a coved type in the precordial leads V₁ to V₃, although affected individuals may have a normal ECG.^1,2 Because patients with Brugada syndrome usually become symptomatic at a relatively young age, early diagnosis is crucial to prevent SCD in those with a higher risk of developing an arrhythmic event.³

Approximately one fourth of the cases of Brugada syndrome are caused by loss of function mutations in the cardiac sodium channel SCN5A. Several nongenetic factors have been mentioned in the literature as possible inductors of the ECG pattern resembling Brugada syndrome.² As such, a Brugada-type ECG may appear in some patients during . . . [Full Text of this Article]

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