A 67-year-old woman without structural heart disease was referred for evaluation and treatment of incessant palpitations. The 12-lead ECG was recorded at the beginning of the scheduled invasive electrophysiological examination… Click to show full abstract
A 67-year-old woman without structural heart disease was referred for evaluation and treatment of incessant palpitations. The 12-lead ECG was recorded at the beginning of the scheduled invasive electrophysiological examination (Figure 1). What is the underlying mechanism of the arrhythmia, and what are the differential diagnostic considerations? Please turn the page to read the diagnosis. Sergio Richter, MD Livio Bertagnolli, MD Gerhard Hindricks, MD
               
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