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Figure 2 Atrial fibrillation (AF) termination. Burst pacing from the left atrium appendage induced a brief episode of AF. After the termination of the fractionated activity in RMPV and LSPV (asterisks), AF converted to AT. Large positive P waves (arrows) are compatible with organized atrial activations. The AT then spontaneously terminated. II = surface ECG lead II. Abbreviations as in Figure 1.
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