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A 51-year-old woman with an implanted dual-chamber pacing system is seen at the emergency department for palpitations. The following electrocardiogram is obtained (Figure 1).
Question:What are the potential causes of wide complex tachycardia in this patient with a pacemaker and what therapeutic interventions are available?
Jiang S, Tabas J, Varosy PD, Goldschlager N. Tachycardia in a Patient With a Dual-Chamber Pacemaker. Arch Intern Med. 2011;171(5):379. doi:10.1001/archinternmed.2011.59
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