Abstract
Broad complex tachycardia; never judge abook by its cover.
Highlights
Ventricular overdrive pacing was performed from the right ventricular (RV) lead at 94%, 88% and 84% of the tachycardia cycle length
With the RV bursts at 94% and 88% of the tachycardia cycle length, the tachycardia did not terminate but was entrained
Broad complex tachycardia; never judge a book by its cover 173
Summary
Ventricular overdrive pacing was performed from the right ventricular (RV) lead (located at the RV apex) at 94%, 88% and 84% of the tachycardia cycle length. The electrocardiogram (ECG) at admission showed a broad complex tachycardia of 138 bpm with superior axis, left bundle branch block (LBBB) morphology and a transition in lead V5.
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