Abstract
more detailed study is undertaken. In the present study, 24% (6 of 25) of patients had either dual AV node pathways or multiple accessory pathways. In such cases, the initial use of an abbreviated protocol may actually prolong the procedure. One additional point merits consideration. In our study, tachycardia was not induced in 3 of 12 patients in the abbreviated protocol, whereas all patients had tachycardia when atrial and ventricular extrastimuli were included. Contirmation that the observed pathway(s) participate in the clinical tachycardia provides the best proof that ablation, with its attendant risks and expenses, is actually merited.
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